VOLTAGE Detector DIY - Tutorial on PCB @Stefano91ste

Stefano91ste ► $2 for 1-4 Layer PCBs, Get SMT Coupons: jlcpcb.com/DYE
This circuit is a Voltage/Phase Detector and works thanks to three BC547 transistors. The operation of the circuit is very simple, the small antenna is able to pick up the electromagnetic wave (EMF) emitted by the electric voltage.. this signal is amplified by the transistors, the third transistor acts as a switch and when signal reach its base it becomes closed switch and turn on the LED. This detector can be powered from 3 volts to 9 volts DC, I have prepared the PCB to house a 3 volt battery (CR2032). Read the list of components carefully if you want to power my project differently. It is designed to be used as a phase detector on medium voltage electrical systems (at 230v AC). Be very careful when using these tools, 230 Volt is very dangerous and can kill!

What is a phase detector?
A phase detector is a simple and inexpensive instrument used to detect the presence of electrical voltage on any circuit and in particular to identify the presence of a phase on a conductor. There are different types of phase detector, usually they have the shape and functionality of a screwdriver, but in the transparent and insulating handle there is a small neon lamp with an electrical resistance connected in series... one end of the circuit is connected to the tip of the screwdriver, the other to a plate on the handle. But this is my electronic version!

Components (if powered with 3 volt battery):
- 3x BC547 NPN Transistor
- 1x 5 mm LED (Red, Yellow or Green)
- 1x CR2032 Battery (3 volt)
- 1x CR2032 Battery Case
- 1x 100Ω Resistor (220Ω if powered with more than 5v)
- 1x 100KΩ Resistor
- 1x 560KΩ Resistor
- 1x 10uF (25/100v) Electrolytic Capacitor
- 1x On/Off Button with 4 Pin
- 1x Metal Wire 7cm (1 mm thickness)

If you add PWR Led:
- 1x 3/5 mm LED (Any color)
- 1x 1KΩ Resistor (if powered with more than 5v)
- 1x 330Ω Resisrtor (if powered with less than 5v)

- PCB: drive.google.com/file/d/1LrOHcSialcOd3WU_49JcsHKk1Rdqzk22/view?usp=sharing
*Don't use my PCB for profit or sponsored videos.

Features of this PCB project:
- Layers: 2 (with Through PAD)
- For 230 Volt AC Systems
- No contact needed with AC Voltage
- Working voltage: 3v with CR2032 Battery
- PCB Size: 23 mm* 94 mm
- PCB Thickness: 1.6mm
- PCB Color: Red
- Silkscreen: White
- Surface Finish:HASL (with lead)
- Material Type: FR4-Standard Tg 130-140C

WARNING ⚠ - 230 Volt is very dangerous and can kill

► PROS and CONS of this circuit:
🟢 PROS: Simple, Functional, Economical, Portable and Contactless
🔴 CONS: Subject to external EMF, Not for professional use

For any other questions you can ask me for explanations in the video comments:)
✅ Subscribe to my YouTube channel It's FREE!

Chapters:
0:00 - Intro
0:50 - Circuit Diagram
0:56 - Circuit Explanation
2:05 - Unboxing
2:40 - Start Assembly
5:18 - Test
6:10 - END

■▬▬▬▬▬ LINK & Support ▬▬▬▬▬■
✅ YouTube: youtube.com/c/Stefano91ste
✅ Instagram: instagram.com/Stefano91ste
✅ Pinterest: https://www.pinterest.it/Stefano91ste
✅ My STORE: youtube.com/c/Stefano91ste/store

Watch another video =)
● Music Keyboard: youtu.be/ajtR6eDOaQI
● LED Water Level: youtu.be/n9GB0nfwG8s
● Police Light: youtu.be/PtmEqcRbu4w
● Vu-Meter Stereo: youtu.be/l8oUQpGAOCw
● Traffic Light: youtu.be/6iRjZMHVvhs
● Vu-Meter 40 LED: youtu.be/oWB2faToGAA

WARNING: This video is only for demonstration. I don't take any responsibility.

#VOLTAGE #DETECTOR #diyprojects

updated 5 years ago

VOLTAGE Detector DIY - Tutorial on PCB

Stefano91ste 2021-07-10 | ► $2 for 1-4 Layer PCBs, Get SMT Coupons: jlcpcb.com/DYE
This circuit is a Voltage/Phase Detector and works thanks to three BC547 transistors. The operation of the circuit is very simple, the small antenna is able to pick up the electromagnetic wave (EMF) emitted by the electric voltage.. this signal is amplified by the transistors, the third transistor acts as a switch and when signal reach its base it becomes closed switch and turn on the LED. This detector can be powered from 3 volts to 9 volts DC, I have prepared the PCB to house a 3 volt battery (CR2032). Read the list of components carefully if you want to power my project differently. It is designed to be used as a phase detector on medium voltage electrical systems (at 230v AC). Be very careful when using these tools, 230 Volt is very dangerous and can kill!

What is a phase detector?
A phase detector is a simple and inexpensive instrument used to detect the presence of electrical voltage on any circuit and in particular to identify the presence of a phase on a conductor. There are different types of phase detector, usually they have the shape and functionality of a screwdriver, but in the transparent and insulating handle there is a small neon lamp with an electrical resistance connected in series... one end of the circuit is connected to the tip of the screwdriver, the other to a plate on the handle. But this is my electronic version!

Components (if powered with 3 volt battery):
- 3x BC547 NPN Transistor
- 1x 5 mm LED (Red, Yellow or Green)
- 1x CR2032 Battery (3 volt)
- 1x CR2032 Battery Case
- 1x 100Ω Resistor (220Ω if powered with more than 5v)
- 1x 100KΩ Resistor
- 1x 560KΩ Resistor
- 1x 10uF (25/100v) Electrolytic Capacitor
- 1x On/Off Button with 4 Pin
- 1x Metal Wire 7cm (1 mm thickness)

If you add PWR Led:
- 1x 3/5 mm LED (Any color)
- 1x 1KΩ Resistor (if powered with more than 5v)
- 1x 330Ω Resisrtor (if powered with less than 5v)

- PCB: drive.google.com/file/d/1LrOHcSialcOd3WU_49JcsHKk1Rdqzk22/view?usp=sharing
*Don't use my PCB for profit or sponsored videos.

Features of this PCB project:
- Layers: 2 (with Through PAD)
- For 230 Volt AC Systems
- No contact needed with AC Voltage
- Working voltage: 3v with CR2032 Battery
- PCB Size: 23 mm* 94 mm
- PCB Thickness: 1.6mm
- PCB Color: Red
- Silkscreen: White
- Surface Finish:HASL (with lead)
- Material Type: FR4-Standard Tg 130-140C

WARNING ⚠ - 230 Volt is very dangerous and can kill

► PROS and CONS of this circuit:
🟢 PROS: Simple, Functional, Economical, Portable and Contactless
🔴 CONS: Subject to external EMF, Not for professional use

For any other questions you can ask me for explanations in the video comments:)
✅ Subscribe to my YouTube channel It's FREE!

Chapters:
0:00 - Intro
0:50 - Circuit Diagram
0:56 - Circuit Explanation
2:05 - Unboxing
2:40 - Start Assembly
5:18 - Test
6:10 - END

■▬▬▬▬▬ LINK & Support ▬▬▬▬▬■
✅ YouTube: youtube.com/c/Stefano91ste
✅ Instagram: instagram.com/Stefano91ste
✅ Pinterest: https://www.pinterest.it/Stefano91ste
✅ My STORE: youtube.com/c/Stefano91ste/store

Watch another video =)
● Music Keyboard: youtu.be/ajtR6eDOaQI
● LED Water Level: youtu.be/n9GB0nfwG8s
● Police Light: youtu.be/PtmEqcRbu4w
● Vu-Meter Stereo: youtu.be/l8oUQpGAOCw
● Traffic Light: youtu.be/6iRjZMHVvhs
● Vu-Meter 40 LED: youtu.be/oWB2faToGAA

WARNING: This video is only for demonstration. I don't take any responsibility.

#VOLTAGE #DETECTOR #diyprojects

Look what happens to a 230 Volt PCB in salt water #experiment

Stefano91ste 2024-05-18 | Interesting experiment on what happens to a PCB powered by 230 Volt AC when it is immerged in water. In a second moment, a lot of salt is added to the water which increases its conductivity.

⚠️ DON'T TRY THIS AT HOME ⚠️

Curiosity: I live in Italy, the theoretical voltage of the electricity line is 230 Volts, sometimes (for technical reasons) energy suppliers increase the voltage up to a maximum of 250 Volts. While I was recording this video the voltage was 250 Volts as read by the yellow multimeter.

Chapters:
00:00 - Intro
00:05 - Water
00:32 - Bubbles
00:48 - Salt
00:51 - Spark
01:14 - Fear
01:40 - Break Power
01:48 - Hot Water
01:58 - Circuit after bath
02:12 - END

⚠️WARNING: This video is only for demonstration. I don't take any responsibility.
⚠️WARNING: In this video a very dangerous experiment is performed, do not imitate it.

#electrical #crazy #diy

Electric spark in water #experiment #electrical #power #spark #pcb #electronic #cool #crazy

Stefano91ste 2024-05-08 | ...

COMPAQ expansion card for PC & Server from 2000s

Stefano91ste 2024-03-23 | A cool COMPAQ expansion card for PC & Server from 2000s
Model: Compaq 227925-001 Remote Insight PCI Board

#compaq #server #electronic

Inside of a #vintage portable TV and #radio device #amazing #electronic #tutorial #japan #tv

Stefano91ste 2024-01-13 | ...

Inside of a #vintage six transistor AM #radio #electronic #diy #amazing #tutorial #shorts #japan

Stefano91ste 2024-01-06 | This is a vintage six transistor AM radio made in Japan!

Inside of a #vintage AM #radio with #clock #electronic #diy #amazing #tutorial #pcb #shorts

Stefano91ste 2023-11-18 | Some features about this radio

- Radio name: Mr.Traveller
- Radio model: C-1000
- Power 6v for radio and 3v for clock
- Solid state circuit
- Transistorized clock

#vintageradio

#diy Scary Halloween pumpkin #halloween #led #electronic #festival #555 #shorts #tiktok #amazing

Stefano91ste 2023-10-19 | ...

Hight Voltage and Electrostatic Polarity Detector circuit

Stefano91ste 2023-09-02 | This circuit is an Electrostatic Polarity Detector, it is able to detects electrostatic charges and indicates their polarity with two LEDs (Red LED = Positive charge, BLUE LED = Negative charge). The core of this circuit is a CD4011, a Gate NAND IC.

For this project I decided to make the circuit on a prototyping board, and as box I used a glass jar, which gives it a particular look with a vintage tone given by the amber LED that constantly lights up the base.

Operation controls on the cap of the glass jar:
- ON/OFF/ON Switch - Turns the device on and off in normal or low power mode, the low energy consumption mode is possible thanks to a 180-ohm 1/2-watt resistor placed on the power line.
- ON/ON Switch - used for select internal or external antennas.
- ON/OFF Big Red Button - Used to select one of the two resistances placed in series with the antennas, you can choose between 3M ohm and 1K ohm.
- RCA Female connector - Used to connect a custom-made external antenna.

Operation of the LED display:
🔴Red = Positive charge
🔵Blue = Negative charge
🔴RED + 🔵BLUE at the same time = AC Voltage⚡️

Components:
1x Small Antenna DIY (made with metal wire)
1x Big Antenna DIY (made with metal wire and male RCA)
1x 4011 IC
2x 68pF Ceramic Capacitors
2x 330 Ω Resistors 1/4 Watt
1x 180 Ω Resistor 1/2 Watt
1x 3 MΩ Resistor 1/4 Watt
2x 1 KΩ Resistor 1/4 Watt
1x Red LED (for Positive Charge)
1x Blue LED (for Negative Charge)
1x LED as power LED (any color)
2x 1N4148 Diodes
1x 1N4007 Diode
1x Stripboard
1x ON/ON Switch (for select antennas)
1x ON/OFF/ON Switch (for power on)
1x ON/OFF Button
1x RCA Female connector
1x RCA Male connector
1x Glass jar

Other material needed:
- Hot glue
- Soldering tin
- Spacers for electronics
- Screws for spacers
- Heat shrink tubing
- Wire foe electronics
- Metal wire
- 9 Volt Battery

Extra material i used (NOT NECESSARY):
- I added a second 9 Volt battery connector directly on the board
- I added a second ON/OFF switch on the board

A bit of theory📚 (from wikipedia.org )
Electrostatics is a branch of physics that studies electric charges at rest.
Since classical times, it has been known that some materials, such as amber, attract lightweight particles after rubbing. The Greek word for amber was thus the source of the word 'electricity'. Electrostatic phenomena arise from the forces that electric charges exert on each other. Such forces are described by Coulomb's law.

There are many examples of electrostatic phenomena, from those as simple as the attraction of plastic wrap to one's hand after it is removed from a package, to the apparently spontaneous explosion of grain silos, the damage of electronic components during manufacturing, and photocopier & laser printer operation. Electrostatics involves the buildup of charge on the surface of objects due to contact with other surfaces. Although charge exchange happens whenever any two surfaces contact and separate, the effects of charge exchange are usually noticed only when at least one of the surfaces has a high resistance to electrical flow, because the charges that transfer are trapped there for a long enough time for their effects to be observed. These charges then remain on the object until they either bleed off to ground, or are quickly neutralized by a discharge. The familiar phenomenon of a static "shock" is caused by the neutralization of charge built up in the body from contact with insulated surfaces.

- Electric field:
The electric field, in units of newtons per coulomb or volts per meter, is a vector field that can be defined everywhere, except at the location of point charges (where it diverges to infinity). It is defined as the electrostatic force in newtons on a hypothetical small test charge at the point due to Coulomb's Law, divided by the magnitude of the charge in coulombs.
Electric field lines are useful for visualizing the electric field. Field lines begin on positive charge and terminate on negative charge. They are parallel to the direction of the electric field at each point, and the density of these field lines is a measure of the magnitude of the electric field at any given point.
Consider a collection of particles of charge, located at points (called source points), the electric field at (called the field point).

- Friction Electrification:
Is a method of electrification which consists in the transfer of electric charge (electrons) from one body to another.
The body that gives up electrons becomes positively charged while the one that receives them becomes negatively charged.
The electrification by friction is obtained substantially by rubbing the two bodies together and the passage of the electrons present on the surface derives from the friction that the rubbing produces.

Chapters:
00:00 - Intro
01:00 - Explanation
02:45 - Test
03:40 - AC & HV
03:48 - Extra
03:56 - Circuit
04:04 - END

⚠️WARNING: This video is only for demonstration. I don't take any responsibility.

#Detector #Electronic #EMF

Speaker with integrated Vu-Meter🔊 #diy #amplifier #music #vumeter #live #electronic

Stefano91ste 2023-02-10 | ...

#water #level #circuit using #transistor in a #cool #pcb #diy #electronic #home #life

Stefano91ste 2023-02-10 | ...

#cool #soldering during the making of an #electronic #project #diy #home #life #welding #super

Stefano91ste 2023-02-09 | ...

Valves or Electronics? #radio #vintage #electronic #diy #home #music #life #audio #amplifier

Stefano91ste 2023-02-08 | ...

During the repair of a #vintage #grundig #radio #diy #electronic #home

Stefano91ste 2023-02-08 | ...

FPV Drone under construction #drone #fpv #electronic #fpvdrone #free

Stefano91ste 2023-02-07 | ...

Cool round #vumeter with #lm3915 and 10 #led in #diy #electronic #home #made

Stefano91ste 2023-02-07 | ...

Simple FlipFlop #circuit using #transistor #diy #led #home #electronic #train #railroad

Stefano91ste 2023-02-07 | ...

Perfect #soldering of two #electric #cable #electronic #diy #home #engineering #craft #tricks

Stefano91ste 2023-02-07 | ...

DIY Led heart for a special peole❤️ #love #romantic #light #beautiful #family #led #ne555

Stefano91ste 2023-02-06 | ...

Testing Vu-Meter on home made PCB #diy #vumeter #lm3915 #electronic

Stefano91ste 2023-02-05 | ...

Led cube with Led RGB #led #electronic #diy #home #music #life

Stefano91ste 2023-02-05 | ...

#tesla #wireless #energy #diy #electronic

Stefano91ste 2023-02-05 | ...

#pokemon with #laser on #wood #cnc #diy #2023

Stefano91ste 2023-02-05 | ...

Soldering! #electronic #pcb #welding #2023 #led #tecnology

Stefano91ste 2023-02-04 | ...

LED Christmas Tree RGB

Stefano91ste 2022-12-16 | ...

LED Cube SHOW

Stefano91ste 2022-12-15 | ...

LED Christmas Tree🎄

Stefano91ste 2022-12-15 | ...

Vibration Sensor Circuit with NE555

Stefano91ste 2022-10-29 | Hi! this is a small sensor capable of detecting vibrations and going in alarm turning on the LED. The two main components of this project are a NE555 and a Vibration Switch. The operation is very simple, when the vibration switch detects a vibration, the NE555 PIN 2 is sent to ground making the LED ON. The reset button returns the circuit to the initial state.

A vibration switch is a simple protection device that senses vibration and triggers an alarm. Inside there is a spring that in the presence of vibrations oscillates and hits the metal wall, closing the circuit and allowing the passage of voltage.

Components:
1x NE555 IC
1x LED 5mm
1x 300 Ohm Resistor
1x Button
1x Vibration Switch

Power with 5-9 volt DC
Circuit Diagram at: 1:36

0:00 - Intro
0:13 - Explanation
0:36 - Test
1:36 - Circuit Diagram
1:43 - End

■▬▬▬▬▬ LINK & Support ▬▬▬▬▬■
✅ YouTube: youtube.com/c/Stefano91ste
✅ Instagram: instagram.com/Stefano91ste
✅ Pinterest: https://www.pinterest.it/Stefano91ste
✅ My STORE: youtube.com/c/Stefano91ste/store

Watch another video =)
● Music Keyboard: youtu.be/ajtR6eDOaQI
● LED Water Level: youtu.be/n9GB0nfwG8s
● Police Light: youtu.be/PtmEqcRbu4w
● Vu-Meter Stereo: youtu.be/l8oUQpGAOCw
● Traffic Light: youtu.be/6iRjZMHVvhs
● Vu-Meter 40 LED: youtu.be/oWB2faToGAA
● Voltage Detector: youtu.be/CxbG7u8kvNk

WARNING: This video is only for demonstration. I don't take any responsibility.

Music: Fast and Run - Nico Staf

#ne555 #electronics #diyprojects

LED Chaser Rain Effect with Bright Trail - NE555 and CD4017 - PCB Tutorial

Stefano91ste 2021-12-12 | ► $2 for 1-4 Layer PCBs, Get SMT Coupons: jlcpcb.com/DYE

This is a Rain LED circuit using a NE555 and a CD4017. I have divided this circuit into two parts, the first with NE555 generates an (adjustable) frequency which issent to the CD4017 (Pin 3 NE555 to Pin 14 CD4017) The second part of the circuit, with CD4017, manages the LEDs, making them run at a speed set by the frequency that I just told you about (from NE555). LED speed can be adjusted by a 47KΩ trimmer... and in this second version I added some electrolytic capacitors to create a small bright trail effect.

Components:
- 1x NE555 IC
- 1x CD4017 IC
- 1x 330Ω Resistor 1/4 Watt
- 2x 1KΩ Resistor 1/4 Watt
- 1x 47KΩ Trimmer
- 1x 1uF @25/50/100V Electrolytic Capacitor
- 10x 4.7uF @25/50/100V Electrolytic Capacitor
- 1x 8 pin DIP (not mandatory if you solder the IC on PCB)
- 1x 16 pin DIP (not mandatory if you solder the IC on PCB)
- 20x LED 5mm (any color)
- 1x LED 3mm (PWR LED)
- 1x 1N4007 Diode (protection against polarity reversal)

- PCB: (Ready for jlcpcb.com): drive.google.com/file/d/1bhecme-HWBbONvhF-bRbFSALCoXLWcqv/view?usp=sharing
*Don't use my PCB for profit or sponsored videos.

This circuit must be powered with 5~9V DC or via USB

Do you want to power these LEDs via USB?
► youtu.be/3IUJcIZ2bvY

For any other questions you can ask me for explanations in the video comments:)

Chapters:
0:00 - Intro
0:35 - Circuit explanation
2:18 - Unboxing
3:16 - Assembly
5:26 - Test
6:05 - END

■▬▬▬▬▬ LINK & Support ▬▬▬▬▬■
✅ YouTube: youtube.com/c/Stefano91ste
✅ Instagram: instagram.com/Stefano91ste
✅ Pinterest: https://www.pinterest.it/Stefano91ste
✅ My STORE: youtube.com/c/Stefano91ste/store

Watch another video =)
● Music Keyboard: youtu.be/ajtR6eDOaQI
● LED Water Level: youtu.be/n9GB0nfwG8s
● Police Light: youtu.be/PtmEqcRbu4w
● Vu-Meter Stereo: youtu.be/l8oUQpGAOCw
● Traffic Light: youtu.be/6iRjZMHVvhs
● Vu-Meter 40 LED: youtu.be/oWB2faToGAA
● Voltage Detector: youtu.be/CxbG7u8kvNk

WARNING: This video is only for demonstration. I don't take any responsibility.

#LED #chaser #diyprojects

230 Volt Clap Switch circuit with NE555

Stefano91ste 2021-09-10 | This circuit is a simple Clap Switch using a NE555 and two BC547 NPN Transistors in a timer configuration, able of driving a light bulb up to 230 volts!

Principle of operation: Noise is received by the microphone capsule, the circuit with NE555 comes into action driving the relay (5/6 volt relay only).. At this point the relay closes the contact and powers the 230 Volt bulb.

Components:
- 1x Microphone
- 1x NE555 IC (no NE556 or TLC555)
- 2x BC547 NPN Transistors (or equivalent)
- 2x LED 5mm (any colors)
- 1x 2Ω Resistor
- 1x 330Ω Resistor
- 1x 470Ω Resistor
- 2x 1KΩ Resistors
- 1x 3,8KΩ Resistor
- 1x 47KΩ Resistor
- 1x 100uF at 25 volt Electrolytic Capacitor
- 2x 100nF Capacitors
- 1x 1N4007 Diode
- 1x 5/6 Volt Relay

✅ Subscribe to my YouTube channel It's FREE!

Chapters:
0:00 - Intro
0:21 - Test
0:54 - 230 Volt Test
1:28 - Circuit
1:34 - END

■▬▬▬▬▬ LINK & Support ▬▬▬▬▬■
✅ YouTube: youtube.com/c/Stefano91ste
✅ Instagram: instagram.com/Stefano91ste
✅ Pinterest: https://www.pinterest.it/Stefano91ste
✅ My STORE: youtube.com/c/Stefano91ste/store

Watch another video =)
● Music Keyboard: youtu.be/ajtR6eDOaQI
● LED Water Level: youtu.be/n9GB0nfwG8s
● Police Light: youtu.be/PtmEqcRbu4w
● Vu-Meter Stereo: youtu.be/l8oUQpGAOCw
● Traffic Light: youtu.be/6iRjZMHVvhs
● Vu-Meter 40 LED: youtu.be/oWB2faToGAA
● Voltage Detector: youtu.be/CxbG7u8kvNk

WARNING: This video is only for demonstration. I don't take any responsibility.

#NE555 #Timer #diyprojects

5 Incredible DIY Electronics KIT

Stefano91ste 2021-09-03 | These are five of my favorite KITS that I have assembled over the years!

► Full Video:
- Metal Detector: youtu.be/azF7zx9Z6Jg
- Frequency Tester: youtu.be/CD3lq9JvAjk
- High Voltage Lighter: youtu.be/e-5v1QQNQ-E
- Audio Analyzer: youtu.be/SFzD1m6qZKs
- Tesla Coil: youtu.be/yYRmxCPxjqI

✅ Subscribe to my YouTube channel It's FREE!

Chapters:
0:00 - Intro
0:07 - Metal Detector
0:30 - Frequency Tester
1:12 - High Voltage Lighter
1:52 - Audio Analyzer
3:00 - Tesla Coil

■▬▬▬▬▬ LINK & Support ▬▬▬▬▬■
✅ YouTube: youtube.com/c/Stefano91ste
✅ Instagram: instagram.com/Stefano91ste
✅ Pinterest: https://www.pinterest.it/Stefano91ste
✅ My STORE: youtube.com/c/Stefano91ste/store

Watch another video =)
● Music Keyboard: youtu.be/ajtR6eDOaQI
● LED Water Level: youtu.be/n9GB0nfwG8s
● Police Light: youtu.be/PtmEqcRbu4w
● Vu-Meter Stereo: youtu.be/l8oUQpGAOCw
● Traffic Light: youtu.be/6iRjZMHVvhs
● Vu-Meter 40 LED: youtu.be/oWB2faToGAA
● Voltage Detector: youtu.be/CxbG7u8kvNk

WARNING: This video is only for demonstration. I don't take any responsibility.

#Electronics #circuit #diyprojects

LED Alcohol Tester DIY with MQ-3 Sensor - KIT by ICStation

Stefano91ste 2021-08-05 | This circuit is an Alcohol tester, based on MQ-3 sensor, thanks to which it is able to detect alcohol vapors. When the sensor MQ-3 detect alcohol vapor, the conductivity of the sensor will be the same as the alcohol vapor concentration. By measuring the series partial pressure between the sensor and the fixed resistor, the alcohol content in the air can be judged.

► Buy this KIT: http://www.icstation.com/sensor-alcohol-detector-tester-alarm-system-electronic-teaching-welding-tranining-kits-p-13642.html

● About MQ-3 Sensor: MQ-3 is a gas sensor that has also high sensitity to Alcohol, and has good resistance to disturb of gasoline, smoke and vapor. This sensor provides an analog resistive output based on alcohol concentration. When the alcohol gas exist, the sensor's conductivity gets higher along with the gas concentration rising.

The IC that drives this circuit is a NE555, the rest are simple components.. there is a relay with which, analyzing the circuit, it is possible to drive an external device, like a visual alarm etc.

● Components:
- 1x NE555 IC
- 1x 8 Pin IC Socket
- 1x MQ-3 Gas Sensor
- 1x Green LED 5mm
- 1x Red LED 5mm
- 1x 1N4148 Diode
- 1x Buzzer
- 1x 5V Relay (Model: HK23F-DC5V)
- 1x Toggle Switch
- 1x Power Socket (DC-005)
- 2x 1KΩ resistors
- 1x 120Ω Resistor
- 1x 5.1Ω Resistor
- 1x 10KΩ Trimmer
- 1x PCB (Size: 63*37*1.4mm)

For this test I will smell 45° whiskey to the sensor🍺
✅ Subscribe to my YouTube channel It's FREE!

Chapters:
0:00 - Intro
0:33 - Explanations
0:55 - Unboxing
1:31 - Start Assembly
4:24 - Test
5:17 - END

■▬▬▬▬▬ LINK & Support ▬▬▬▬▬■
✅ YouTube: youtube.com/c/Stefano91ste
✅ Instagram: instagram.com/Stefano91ste
✅ Pinterest: https://www.pinterest.it/Stefano91ste
✅ My STORE: youtube.com/c/Stefano91ste/store

Watch another video =)
● Music Keyboard: youtu.be/ajtR6eDOaQI
● LED Water Level: youtu.be/n9GB0nfwG8s
● Police Light: youtu.be/PtmEqcRbu4w
● Vu-Meter Stereo: youtu.be/l8oUQpGAOCw
● Traffic Light: youtu.be/6iRjZMHVvhs
● Vu-Meter 40 LED: youtu.be/oWB2faToGAA
● Voltage Detector: youtu.be/CxbG7u8kvNk

WARNING: This video is only for demonstration. I don't take any responsibility.

#MQ3 #Sensor #diyprojects

3.7v Lithium Battery Charge Full & Low Level Indicator

Stefano91ste 2021-07-31 | This circuit is a 3.7v Lithium Battery Charge Level Indicator built on a matrix board. A battery level indicator is a device that provides “information about a battery” When the voltage exceeds 3.7v the green LED lights up while if it drops below 3.6v the red LED light up... so when the Lithium-Ion battery is fully charged, the circuit will glow green light and when the Lithium-Ion battery is fully discharged, the circuit will glow red light.

The main component of this circuit is the BC547 transistor, which takes care of flow in its collector only the current necessary to power the LEDs in order to minimize the load on the batteries and obtain a more precise reading. This circuit requires only some low-cost components like transistor, diode, resistors, and LEDs.

I want to clarify that a 3.7 volt lithium battery (nominal value) can be considered charged if, without load, it has a voltage higher than 4 volts, and discharged if it is lower than 3.7 volts.

Components:
1x BC547 NPN Transistor
1x Matrix Board
2x 1KΩ Resistor
1x 220Ω Resistor
2x LED 5mm
1x DC Connector

► PROS and CONS of this circuit:
🟢 PROS: Simple, Functional, Economical, Few components
🔴 CONS: Not for professional use

✅ Subscribe to my YouTube channel It's FREE!

Chapters:
0:00 - Intro & Demonstration
0:40 - Explanation
1:36 - Circuit Diagram
1:40 - END

■▬▬▬▬▬ LINK & Support ▬▬▬▬▬■
✅ YouTube: youtube.com/c/Stefano91ste
✅ Instagram: instagram.com/Stefano91ste
✅ Pinterest: https://www.pinterest.it/Stefano91ste
✅ My STORE: youtube.com/c/Stefano91ste/store

Watch another video =)
● Music Keyboard: youtu.be/ajtR6eDOaQI
● LED Water Level: youtu.be/n9GB0nfwG8s
● Police Light: youtu.be/PtmEqcRbu4w
● Vu-Meter Stereo: youtu.be/l8oUQpGAOCw
● Traffic Light: youtu.be/6iRjZMHVvhs
● Vu-Meter 40 LED: youtu.be/oWB2faToGAA
● Voltage Detector: youtu.be/CxbG7u8kvNk

WARNING: This video is only for demonstration. I don't take any responsibility.

#lithium #diyprojects

ALL About New Aluminum PCB Boards

Stefano91ste 2021-07-24 | ► $2 for 1-4 Layer PCBs, Get SMT Coupons: jlcpcb.com/DYE

Hi! In this video I want to introduce and explain the new aluminum PCBs, how they are made and for what applications they are designed (not for standard PCB) Aluminum PCBs are ideal for situations when thermal heat dissipation requirements are very high. They are more effective at directing thermal energy away from PCB components and are used more than ever for applications of high power and high thermal heat dissipation... Like LED applications, including traffic lights, automotive lighting and general lighting.Unfortunately, as they are made, these PCBs have the drawback that they can only be single layer PCB and with SMD components

HOW ALUMINUM PCBs ARE MADE?
Aluminum printed circuit boards are also known as metal base PCBs and are comprised of metal based laminates covered by copper foil circuit layers. They are made of alloy plates that are a combination of aluminum, magnesium and silumin. They have anexcellent electrical insulation, good thermal potential and high machining performance, and they differ from other PCBs in several important ways like:
- These PCBs have a base layer that consists of an aluminum alloy substrate (Aluminum Layer)
- The thermal insulation layer that is an important component of the PCB. It contains a ceramic polymer that has excellent viscoelastic properties, great thermal resistance and defends the PCB from any stresses.
- The circuit layer that contains the copper foil for the PCB tracks (Circuit Copper Layer)
- The dielectric layer of insulation absorbs heat as current flows through the circuits. This is transferred to the aluminum layer, where the heat is dissipated.

In summary, the advantages of this type of PCB are:
- Less Expensive
- Ambient Friendly
- Heat transfer
- Sturdy and for voltages higher than 3000 volts
- Lightweight (compared to other metals)

HOW ABOUT STANDARD COMPONENTS?
It is not possible to use this type of PCB with standard components, but only with SMD / SMT components which are positioned and soldered on the same layer.Because as a result of the internal contact of the holes with the aluminum, all the pins of the components will be short-circuited with each other :(

The "Aluminum Vu-Meter" PCB was made only for the realization of this video, but as I explained it is not working. Made aluminum PCB only for single layer projects, with SMD SMT components

After trying the excellent service offered by JLCPCB I recommend it, the quality of the PCB is high, customer service is always available and professional, the time of realization is short and the delivery of PCBs is by express courier. JLCPCB is a great place to get hight quality custom circuit boards at an extremely low price, you can buy 5 PCB Boards (Any Color) for 2$ !!!

For any other questions you can ask me for explanations in the video comments:)
✅ Subscribe to my YouTube channel It's FREE!

Chapters:
0:00 - Explanation
1:58 - TEST
3:33 - How to Buy

■▬▬▬▬▬ LINK & Support ▬▬▬▬▬■
✅ YouTube: youtube.com/c/Stefano91ste
✅ Instagram: instagram.com/Stefano91ste
✅ Pinterest: https://www.pinterest.it/Stefano91ste
✅ My STORE: youtube.com/c/Stefano91ste/store

Watch another video =)
● Music Keyboard: youtu.be/ajtR6eDOaQI
● LED Water Level: youtu.be/n9GB0nfwG8s
● Police Light: youtu.be/PtmEqcRbu4w
● Vu-Meter Stereo: youtu.be/l8oUQpGAOCw
● Traffic Light: youtu.be/6iRjZMHVvhs
● Vu-Meter 40 LED: youtu.be/oWB2faToGAA
● Voltage Detector: youtu.be/CxbG7u8kvNk

WARNING: This video is only for demonstration. I don't take any responsibility.

#PCB #Aluminum #diyprojects

Electronics Projects for EVERYONE - Stefano91ste Channel Trailer

Stefano91ste 2021-07-01 | Welcome to Electronics Projects Stefano91ste!🔥
My mission is to show simple Electronic Projects and teach how to do them, I also love creating some new ideas about the world of Electronics. In any video you will find circuit diagram, PCB files and explanations, so you can easy make it!

Music by Free Vibes

#Electronics #diyprojects #Tutorial

What is a DATA LOGGER? - Elitech RC-5 from Banggood

Stefano91ste 2021-06-24 | This is a data logger, a device mainly used for temperature recording. It is important to record the temperature of the products like raw materials, chemicals and medicines, during storage and transportation, because is essential to allow companies to be sure that their material has been transported in optimal conditions, and therefore has not been damaged by transport.

- Buy this Data Logger: banggood.com/custlink/GKmdjQWfhT
- Download Software: http://www.elitechlog.com/softwares

► Banggood Summer Sale LINKs
- Grab Money Saving Tips in Summer Prime Sale 2021 bit.ly/3vJdZx5
- Best Coupons & Deals for Summer Prime Sale 2021 bit.ly/2SfkKsJ
- Summer Prime Sale 2021 Kicks Off With Best Deals bit.ly/3gRqrVV

The Data Logger I try today is called RC-5, is produced by Elitech and was provided to me by Banggood. Aesthetically it looks like a USB stick, has IP67 Waterproof grade and records temperatures from -30 to +70 degrees celsius. Think that the battery (CR2032) can last up to about a year, assuming to record a temperature every 15 minutes! But to confirm that the battery life is so long you will have to wait.. in fact I plan to use this device for a little long-term experiment. Let's talk now about data, this Data Logger has a large permanent data memory of 32000 records and comes with data management software for easy data download (to computers) through USB interface. With the software, you could analyze data in form of tables and graphs, and export in picture format.

Elitech RC-5 Features:
- Temperature measuring range: -30+70 °C
- Resolution: 0.1 °C
- Accuracy: ±0.5 °C
- Temperature unit: °C or °F
- Item Size: 80x34x14 mm
- Item Weight: 30 g
- Waterproof grade: IP67
- Record capacity: 32000 points (MAX)
- Record interval: 10s to 24hour (adjustable)
- Sensor: Internal NTC thermal resistor
- Communication interface: USB interface
- Power supply: CR2032 battery or power supply via USB
- Battery life: Above one year (in normal temperature, if the record interval set as 15 minutes)

✅ Subscribe to my YouTube channel It's FREE!

Chapters:
0:00 - Intro
0:24 - Unboxing
1:45 - Configuration
4:05 - TEST
4:54 - Data Analysis
5:43 - END

■▬▬▬▬▬ LINK & Support ▬▬▬▬▬■
✅ YouTube: youtube.com/c/Stefano91ste
✅ Instagram: instagram.com/Stefano91ste
✅ Pinterest: https://www.pinterest.it/Stefano91ste
✅ My STORE: youtube.com/c/Stefano91ste/store

Watch another video =)
● Music Keyboard: youtu.be/ajtR6eDOaQI
● LED Water Level: youtu.be/n9GB0nfwG8s
● Police Light: youtu.be/PtmEqcRbu4w
● Vu-Meter Stereo: youtu.be/l8oUQpGAOCw
● Traffic Light: youtu.be/6iRjZMHVvhs
● Vu-Meter 40 LED: youtu.be/oWB2faToGAA
● Voltage Detector: youtu.be/yRWRsSASQTc

WARNING: This video is only for demonstration. I don't take any responsibility.

Music (in playback order):
1) Love Aside - Patrick Patrikios
2) Rewind - Ofshane
3) Fast and Run - Nico Staf

#DataLogger #Thermometer #Banggoodsummersale

LED Vu-Meter with Microphone LM3915 & LM386 - PCB Tutorial

Stefano91ste 2021-06-05 | ► $2 for 1-4 Layer PCBs, Get SMT Coupons: jlcpcb.com/DYE

This Vu-Meter with LM3915 integrates an LM386 amplifier and a microphone, so that it can work without having to be physically connected to any audio source. As LED display I used a bargraph (Model: KYX-B10G). The sensitivity of the microgon (GAIN) is adjustable by means of a 10KΩ trimmer placed on the PCB. The Vu-Meter must be powered with a voltage between 5v and 12v DC, and the maximum current absorption is equal to 100mAh. There is also a 1N4007 diode in the circuit which protects the Vu-Meter from short circuits during power supply phase.

● Components:
1x LM3915 IC
1x LM386 IC
1x 10 LED Bargraph (Model: KYX-B10G)*
1x Microphone Capsule
1x 3mm LED (any color)
1x DIP 18 PIN (for LM3915)
1x DIP 8 PIN (for LM386)
1x 1uF Electrolytic Capacitor (25-100v)
2x 10uF Electrolytic Capacitor (25-100v)
1x 100uF Electrolytic Capacitor (25-100v)
1x 10nF Polyester Capacitor
1x 47nF Ceramic Capacitor
2x 1N4007 Diode
1x 50Ω ¼W Resistor
1x 1KΩ ¼W Resistor
3x 2,7KΩ ¼W Resistors
2x 100KΩ ¼W Resistors
1x 10KΩ Trimmer
1x 9V battery Plug (or two PIN/wires)
1x Two PIN for Dot/Bar Mode
1x PIN Bridge with two PIN
1x Trimmer knob (not mandatory)

* I used a 10 Green LED Bargraph (Model: KYX-B10G) but you can use a Bargraph of different colors, as long as it respects the pinouts of this model.

● Equipment:
- Tin Wire (with integrated flux)
- FLUX (extra FLUX if you need to use it)
- Soldering Iron
- Wire cutters

● PCB: (Ready for jlcpcb.com): drive.google.com/file/d/1gua93or_xLqqXsX5O4gPY4L0azWS49jc/view?usp=sharing
*Don't use my PCB for profit or sponsored videos.

● Features:
Range: 30dB (3dB for LED)
Power Supply: 9-12v DC
Absorbed current (MAX): 100mA/h
Weight (assembled): 20g
PCB Layer: 2
PCB Size: 33x67 mm
PCB Thickness: 1,6 mm
Screw fixing holes: 4x 2 mm
Short circuit protection: YES (with a 1N4007 Diode)
Cool design: YES
Adjustable GAIN (by 10KΩ Trimmer)

- About LM3915:
LM3915 is a monolithic integrated circuit that detects analog voltage levels and drive ten LEDs, LCDs or vacuum fluorescent displays, supplying a logarithmic 3 dB/step analog display which can be calibrated logarithmically and is suitable for log measurements as logarithmic bar graph driver.

- About LM386:
LM386 is an integrated circuit containing a low-voltage audio power amplifier.It is suitable for battery-powered devices such as radios, guitar amplifiers, and hobby electronics projects. It can output 0.25 to 1 watts of power and has an impedance of 8Ω

- About 4mm LED:
It is a LED with a diameter of 4 mm, an unusual size. I found this LED on an old board taken from trash. I haven't found any others on the market.. don't worry, you can use a 3 mm LED!

- About Microphone Connector:
The microphone connection pad on this PCB was designed by me to allow the connection of different types of microphone capsules. Just be very careful in respecting the polarity + and - of the microphone.

► PROS and CONS of use a Vu-Meter with mic instead a standard one:
🟢 PROS: Portability, Not physically connected to the Amp, So cool!
🔴 CONS: Less accurate measurement than cable

For any other questions ask me in the video comments:)
✅ Subscribe to my YouTube channel It's FREE!

Chapters:
0:00 - Intro
0:34 - Circuit Explanation
2:03 - JLCPCB Factory
2:25 - PCB Upload
3:05 - Unboxing
3:40 - Start PCB Assembly
6:45 - Assembly Completed
7:00 - Music Test
7:50 - Circuit Diagram
7:55 - END

■▬▬▬▬▬ LINK & Support ▬▬▬▬▬■
✅ YouTube: youtube.com/c/Stefano91ste
✅ Instagram: instagram.com/Stefano91ste
✅ Pinterest: https://www.pinterest.it/Stefano91ste
✅ My STORE: youtube.com/c/Stefano91ste/store

Watch another video =)
● Music Keyboard: youtu.be/ajtR6eDOaQI
● LED Water Level: youtu.be/n9GB0nfwG8s
● Police Light: youtu.be/PtmEqcRbu4w
● Vu-Meter Stereo: youtu.be/l8oUQpGAOCw
● Traffic Light: youtu.be/6iRjZMHVvhs
● Vu-Meter 40 LED: youtu.be/oWB2faToGAA
● Voltage Detector: youtu.be/yRWRsSASQTc

WARNING: This video is only for demonstration. I don't take any responsibility.

Test Music: Elektronomia - Sky High [NCS Release]
( youtu.be/TW9d8vYrVFQ ) - Copyright-free Music

#LM3915 #diyprojects #VuMeter

Mosquito Repellent Circuit with BC547 or 2N2222

Stefano91ste 2021-05-15 | This device is an electronic repellent to repel mosquitoes and other annoying bugs. The operating principle is very simple, through a transistor it generates a sound of about 4KHz.. sound that will annoy and scare off different bugs, the emitted frequency, in the form of sound, can be adjusted by a 500K trimmer. This circuit work between 3.7v and 5v DC.

► PROS and CONS of this circuit:
🟢 PROS: Easy to build, few components, portable, no pollute, no harm
🔴 CONS: Annoying noise even for people.

Components:
- 1x BC547 (or 2N2222)
- 1x 500KΩ Trimmer
- 1x 10KΩ Resistor
- 1x 2.2KΩ Resistor
- 1x 1nF to 10nF Polyester Capacitor
- 1x 100nF Polyester Capacitor
- 1x Passive Buzzer
- 1x LED (any color)

Chapters:
0:00 - Intro
0:33 - Explanation
1:25 - TEST
1:50 - Oscilloscope
2:10 - Circuit Diagram
2:15 - END

■▬▬▬▬▬ LINK & Support ▬▬▬▬▬■
✅ YouTube: youtube.com/c/Stefano91ste
✅ Instagram: instagram.com/Stefano91ste
✅ Pinterest: https://www.pinterest.it/Stefano91ste
✅ My STORE: youtube.com/c/Stefano91ste/store

Watch another video =)
● Music Keyboard: youtu.be/ajtR6eDOaQI
● LED Water Level: youtu.be/n9GB0nfwG8s
● Police Light: youtu.be/PtmEqcRbu4w
● Vu-Meter Stereo: youtu.be/l8oUQpGAOCw
● Traffic Light: youtu.be/6iRjZMHVvhs
● Vu-Meter 40 LED: youtu.be/oWB2faToGAA
● Voltage Detector: youtu.be/yRWRsSASQTc

WARNING: This video is only for demonstration. I don't take any responsibility.

#Mosquito #Repellent #diyprojects

5 Most Popular Electronic Projects using PCB from #jlcpcb

Stefano91ste 2021-05-01 | ► $2 for 1-4 Layer PCBs, Get SMT Coupons: jlcpcb.com/DYE
The ranking of the five PCBs I made that you liked the most, the projects were chosen based on the number of views received.

After trying the excellent service offered by JLCPCB I recommend it, the quality of the PCB is high, customer service is always available and professional, the time of realization is short and the delivery of PCBs is by express courier. JLCPCB is a great place to get hight quality custom circuit boards at an extremely low price, you can buy 5 PCB Boards (Any Color) for 2$ !!!

Full Video Projects:
- LED Water Level: youtu.be/XKGtgbS1Ovw
- Police LIGHT: youtu.be/kG2LQmEtqZo
- Vu-Meter 20 LED: youtu.be/4vs87MYQ1Ws
- Vu-Meter 40 LED: youtu.be/oWB2faToGAA
- Vu-Meter LM3916: youtu.be/l8oUQpGAOCw

*Don't use my PCB for profit or sponsored videos ⚠
For any other questions you can ask me for explanations in the video comments:)

✅ Subscribe to my YouTube channel It's FREE!

Chapters:
0:00 - Intro
0:42 - Ranking
3:12 - END

■▬▬▬▬▬ LINK & Support ▬▬▬▬▬■
✅ YouTube: youtube.com/c/Stefano91ste
✅ Instagram: instagram.com/Stefano91ste
✅ Pinterest: https://www.pinterest.it/Stefano91ste
✅ My STORE: youtube.com/c/Stefano91ste/store

WARNING: This video is only for demonstration. I don't take any responsibility.
Thumbnail image from google.

#TOP5 #diyprojects #PCB

Bycicle LED Flasher Light with TLC555

Stefano91ste 2021-04-24 | Hi, this circuit is a low energy consumption LED flasher, based on a TLC555 (an integrated circuit very similar to an NE555) designed by MoreWare to be mounted on a bicycle, or whatever you want :)

This KIT: facebook.com/commerce/products/3657085857752929/?ref=page_shop_tab&referral_code=page_shop_tab_card

Components List:
- 1x TLC555 IC (not NE555)
- 1x 8 Pin DIP
- 1x 10µF 16V Electrolytic Capacitor
- 1x 100nF Ceramic Capacitor
- 2x 10KΩ Resistors
- 4x 68Ω Resistors
- 4x 5mm LEDs (red)
- 1x Power connector

about MoreWare:
- Blog: moreware.org/wp
- YouTube: youtube.com/channel/UCFFSDYPL0-Fx6OvJD28GP8A

✅ Subscribe to my YouTube channel It's FREE!

Chapters:
0:00 - Intro
0:07 - Unboxing
0:45 - Circuit Theory
1:12 - Circuit Diagram
1:20 - Start Assembly
3:14 - First Test
3:20 - Choose a Battery
3:48 - Bicycle Test
4:09 - END

■▬▬▬▬▬ LINK & Support ▬▬▬▬▬■
✅ YouTube: youtube.com/c/Stefano91ste
✅ Instagram: instagram.com/Stefano91ste
✅ Pinterest: https://www.pinterest.it/Stefano91ste
✅ My STORE: youtube.com/c/Stefano91ste/store

Watch another video =)
● Music Keyboard: youtu.be/ajtR6eDOaQI
● LED Water Level: youtu.be/n9GB0nfwG8s
● Police Light: youtu.be/PtmEqcRbu4w
● Vu-Meter Stereo: youtu.be/l8oUQpGAOCw
● Traffic Light: youtu.be/6iRjZMHVvhs
● Vu-Meter 40 LED: youtu.be/oWB2faToGAA
● Voltage Detector: youtu.be/yRWRsSASQTc

WARNING: This video is only for demonstration. I don't take any responsibility.

#Bycicle #Light #Electronics

The smallest LED Vu-Meter with LM3915 on DIY PCB - Tutorial

Stefano91ste 2021-04-10 | ► $2 for 1-4 Layer PCBs, Get SMT Coupons: jlcpcb.com/DYE
Hi, this is probably the smallest LM3915 Vu-Meter you have ever seen on YouTube (without SMD) with a PCB Size of 28*28mm! It is designed to be connected to a pre-amplified audio source or directly to the amplified outputs of the amplifier. This circuit must be powered with 9-12V DC,

After trying the excellent service offered by JLCPCB I recommend it, the quality of the PCB is high, customer service is always available and professional, the time of realization is short and the delivery of PCBs is by express courier. JLCPCB is a great place to get hight quality custom circuit boards at an extremely low price, you can buy 5 PCB Boards (Any Color) for 2$ !!!

Components:
- 1x LM3915 IC
- 1x 10 LED Bargraph
- 1x 18 PIN Dip
- 1x 1uF 25/50/100V Electrolytic Capacitor
- 2x 2.7KΩ Resistors
- 1x100KΩ Resistor
- 1x 1N4007 Diode
- 2x PIN for Dot/Bar Mode
- 3x PIN for Vcc | GND | Sig

- PCB: drive.google.com/file/d/1XcO8OrXTiZGpRT3iv5fnueobhHlnWvk-/view?usp=sharing
*Don't use my PCB for profit or sponsored videos.

✅ Subscribe to my YouTube channel It's FREE!

Chapters:
0:00 - Intro
0:45 - Circuit Diagram
1:48 - JLCPCB Upload
2:15 - Unboxing
2:52 - Assembly
5:10 - Test
5:36 - Music Test
6:44 - End

■▬▬▬▬▬ LINK & Support ▬▬▬▬▬■
✅ YouTube: youtube.com/c/Stefano91ste
✅ Instagram: instagram.com/Stefano91ste
✅ Pinterest: https://www.pinterest.it/Stefano91ste
✅ My STORE: youtube.com/c/Stefano91ste/store

Watch another video =)
● Music Keyboard: youtu.be/ajtR6eDOaQI
● LED Water Level: youtu.be/n9GB0nfwG8s
● Police Light: youtu.be/PtmEqcRbu4w
● Vu-Meter Stereo: youtu.be/l8oUQpGAOCw
● Traffic Light: youtu.be/6iRjZMHVvhs
● Vu-Meter 40 LED: youtu.be/oWB2faToGAA
● Voltage Detector: youtu.be/yRWRsSASQTc

WARNING: This video is only for demonstration. I don't take any responsibility.

#LM3915 #VuMeter #diyprojects

FM Radio Receiver DIY - 87/108 MHz (Part-2 CASE Assembly)

Stefano91ste 2021-04-04 | Buy this KIT: http://www.icstation.com/870mhz-1080mhz-wireless-radio-receiver-p-15645.html
Part 1: youtu.be/PfED_qYMCu4

This is an 87.0MHz-108.0MHz Wireless FM Radio Receiver DIY KIT. It has a built-in 4-digit Red Digital display which can clearly display the receiving frequency.

Feature:
- Automatic memory function after power off
- Support 87Hz-108MHz receiver frequency
- Built-in 5W power amplifier (LM386 IC)
- Output power: 5W*
- Power saving mode (Display off after 5 seconds)
- Product Name: FM Radio Receiver DIY Kit
- Work Voltage: DC 4.5V~5.5V
- Output impedance: 8ohm
- Output channel: Mono
- Receiver Frequency: 87.0MHz~108.0MHz
- Frequency accuracy: 0.1MHz
- Equivalent noise: 30dB
- Work Temperature: -40℃~85℃
- Work Humidity: 5%~95%RH
- Size: 83x69x53mm

*The amplifier of this radio is an LM386, so I think the real power output is 1 Watt

✅ Subscribe to my YouTube channel It's FREE!

Chapters:
0:00 - Intro
0:20 - Box Assembly
5:00 - Radio Test
6:34 - END

■▬▬▬▬▬ LINK & Support ▬▬▬▬▬■
✅ YouTube: youtube.com/c/Stefano91ste
✅ Instagram: instagram.com/Stefano91ste
✅ Pinterest: https://www.pinterest.it/Stefano91ste
✅ My STORE: youtube.com/c/Stefano91ste/store

Watch another video =)
● Music Keyboard: youtu.be/ajtR6eDOaQI
● LED Water Level: youtu.be/n9GB0nfwG8s
● Police Light: youtu.be/PtmEqcRbu4w
● Vu-Meter Stereo: youtu.be/l8oUQpGAOCw
● Traffic Light: youtu.be/6iRjZMHVvhs
● Vu-Meter 40 LED: youtu.be/oWB2faToGAA
● Voltage Detector: youtu.be/yRWRsSASQTc

WARNING: This video is only for demonstration. I don't take any responsibility.

#Radio #LM386 #Tutorial

FM Radio Receiver DIY - 87/108 MHz (Part-1 PCB Assembly)

Stefano91ste 2021-04-03 | Buy this KIT: http://www.icstation.com/870mhz-1080mhz-wireless-radio-receiver-p-15645.html
Part 2: youtu.be/AzrVXVaoiTE

This is an 87.0MHz-108.0MHz Wireless FM Radio Receiver DIY KIT. It has a built-in 4-digit Red Digital display which can clearly display the receiving frequency.

Feature:
- Automatic memory function after power off
- Support 87Hz-108MHz receiver frequency
- Built-in 5W power amplifier (LM386 IC)
- Output power: 5W*
- Power saving mode (Display off after 5 seconds)
- Product Name: FM Radio Receiver DIY Kit
- Work Voltage: DC 4.5V~5.5V
- Output impedance: 8ohm
- Output channel: Mono
- Receiver Frequency: 87.0MHz~108.0MHz
- Frequency accuracy: 0.1MHz
- Equivalent noise: 30dB
- Work Temperature: -40℃~85℃
- Work Humidity: 5%~95%RH
- Size: 83x69x53mm

*The amplifier of this radio is an LM386, so I think the real power output is 1 Watt

✅ Subscribe to my YouTube channel It's FREE!

Chapters:
0:00 - Intro
0:14 - Unboxing
2:41 - Circuit Diagram
2:51 - Start Assembly
8:55 - First Test

■▬▬▬▬▬ LINK & Support ▬▬▬▬▬■
✅ YouTube: youtube.com/c/Stefano91ste
✅ Instagram: instagram.com/Stefano91ste
✅ Pinterest: https://www.pinterest.it/Stefano91ste
✅ My STORE: youtube.com/c/Stefano91ste/store

Watch another video =)
● Music Keyboard: youtu.be/ajtR6eDOaQI
● LED Water Level: youtu.be/n9GB0nfwG8s
● Police Light: youtu.be/PtmEqcRbu4w
● Vu-Meter Stereo: youtu.be/l8oUQpGAOCw
● Traffic Light: youtu.be/6iRjZMHVvhs
● Vu-Meter 40 LED: youtu.be/oWB2faToGAA
● Voltage Detector: youtu.be/yRWRsSASQTc

WARNING: This video is only for demonstration. I don't take any responsibility.

#Radio #Amplifier #Tutorial

Digital LED Clock DIY with PIC 16F84A - PCB Tutorial

Stefano91ste 2021-03-27 | ► $2 for 1-4 Layer PCBs, Get SMT Coupons: jlcpcb.com/DYE

This is a Digital Clock with PIC 16F84A!
The Displays of this clock have a multiplexing connection, this allows to manage multiple displays with a single IC. The BC547 transistors are used to power only one display at time by turning on only the segments corresponding to the number to be displayed. The 4MHz crystal is used by the PIC to have a reference frequency with which to count the time as accurately as possible and the three buttons are used to set Hours, Minutes and Reset.

About PIC16F84A: is 8-bit microcontroller, was the first PIC microcontroller with a serial programming algorithm and an EEPROM memory.. You need a code to make these IC work! For programming the PIC I used this Ludipipo multi programmer, which can be connected to the PC via RS232

After trying the excellent service offered by JLCPCB I recommend it, the quality of the PCB is high, customer service is always available and professional, the time of realization is short and the delivery of PCBs is by express courier. JLCPCB is a great place to get hight quality custom circuit boards at an extremely low price, you can buy 5 PCB Boards (Any Color) for 2$ !!!

Components:
- 1x PIC16F84A (or 16F84)
- 1x DIP 18 Pin
- 4x BC547 NPN Transistors
- 1x LM7805
- 3x Buttons
- 1x Resistor 10Ω
- 1x Resistor 10KΩ
- 1x 100uF Electrolytic Capacitor (10V to 100V)
- 2x 22pF Capacitors
- 4x Common Cathode7 Segment Display
- 1x 4MHz quartz
- 2x 3mm LEDs
- 2x Pin or Power Cable

- PCB & Code: drive.google.com/file/d/1DHIPOmGFAAdywBLmE4nQavZNwBwSpfze/view?usp=sharing
*Don't use my PCB for profit or sponsored videos.
Code credits: WinDis84, (c) Nigel Goodwin 1998

This circuit must be powered with 5-12V DC,
For any other questions you can ask me for explanations in the video comments:)

✅ Subscribe to my YouTube channel It's FREE!

Chapters:
0:00 - Intro
0:11 - Explanation
1:28 - Circuit Explanation
2:14 - JLCPCB
2:59 - Unboxing
3:40 - Start Assembly
6:04 - TEST
6:38 - END

■▬▬▬▬▬ LINK & Support ▬▬▬▬▬■
✅ YouTube: youtube.com/c/Stefano91ste
✅ Instagram: instagram.com/Stefano91ste
✅ Pinterest: https://www.pinterest.it/Stefano91ste
✅ My STORE: youtube.com/c/Stefano91ste/store

Watch another video =)
● Music Keyboard: youtu.be/ajtR6eDOaQI
● LED Water Level: youtu.be/n9GB0nfwG8s
● Police Light: youtu.be/PtmEqcRbu4w
● Vu-Meter Stereo: youtu.be/l8oUQpGAOCw
● Traffic Light: youtu.be/6iRjZMHVvhs
● Vu-Meter 40 LED: youtu.be/oWB2faToGAA
● Voltage Detector: youtu.be/yRWRsSASQTc

WARNING: This video is only for demonstration. I don't take any responsibility.

#Digital #Clock #diyprojects

Servomotor Tester Circuit with NE555 for Electronics and Model - PCB Tutorial

Stefano91ste 2021-03-13 | ► $2 for 1-4 Layer PCBs, Get SMT Coupons: jlcpcb.com/DYE
This circuit can be used to manually turn a servomotor, by pushing the forward or reverse button for a short period of time. You can control the rotation of the servo testing its correct functioning. In the video I use an SG90 servomotor.

After trying the excellent service offered by JLCPCB I recommend it, the quality of the PCB is high, customer service is always available and professional, the time of realization is short and the delivery of PCBs is by express courier. JLCPCB is a great place to get hight quality custom circuit boards at an extremely low price, you can buy 5 PCB Boards (Any Color) for 2$ !!!

Components:
- 1x NE555
- 1x DIP 8 Pin
- 1x BC547 NPN Transistor
- 1x 10nF Polyester/Ceramic Capacitor
- 1x 100nF Polyester/Ceramic Capacitor
- 1x 100uF 25/50/100V Electrolytic Capacitor
- 2x 330Ω Resistors
- 1x 1KΩ Resistor
- 1x 4.7KΩ Resistor
- 1x 10KΩ Resistor
- 1x 33KΩ Resistor
- 1x 68KΩ Resistor
- 2x LED 5mm
- 2x Button
- Cable/Pin

- PCB: (Ready for jlcpcb.com): drive.google.com/file/d/1wUAXCFN-0bGHe2OLNZ4vReC_jNi-Vxx9/view?usp=sharing
*Don't use my PCB for profit or sponsored videos.

This circuit must be powered with 5V DC
For any other questions you can ask me for explanations in the video comments:)

✅ Subscribe to my YouTube channel It's FREE!

Chapters:
0:00 - Intro
0:14 - Explanation
2:02 - Unboxing
2:31 - Start Assembly
4:32 - Test
5:18 - Circuit Diagram
5:25 - END

■▬▬▬▬▬ LINK & Support ▬▬▬▬▬■
✅ YouTube: youtube.com/c/Stefano91ste
✅ Instagram: instagram.com/Stefano91ste
✅ Pinterest: https://www.pinterest.it/Stefano91ste
✅ My STORE: youtube.com/c/Stefano91ste/store

Watch another video =)
● Music Keyboard: youtu.be/ajtR6eDOaQI
● LED Water Level: youtu.be/n9GB0nfwG8s
● Police Light: youtu.be/PtmEqcRbu4w
● Vu-Meter Stereo: youtu.be/l8oUQpGAOCw
● Traffic Light: youtu.be/6iRjZMHVvhs
● Vu-Meter 40 LED: youtu.be/oWB2faToGAA
● Voltage Detector: youtu.be/yRWRsSASQTc

WARNING: This video is only for demonstration. I don't take any responsibility.

#NE555 #Servomotor #diyprojects

LASER HARP Circuit with STC-89C52 DIY KIT

Stefano91ste 2021-03-07 | Inspired by the famous LASER HARP this is for everyone!
► Buy Laser Harp: circuitpop.com/products/c51-laser-harp-kit?_pos=2&_sid=4f67f3171&_ss=r

A Laser Harp is a harp without strings. It is replaced by a bright light beam. The user only needs to turn the light beam as if the strings were turned, and they can still play a melody. Photoresistor and IC STC89C52 are composed of two parts. When the beam emitted by the laser tube is blocked, the corresponding photoresistor senses and produces a change in resistance. The system of seven photoresistors produces a change in high and low potentials, and the IC reads the changes in high and low potentials of the photoresistor to complete the input of the operation command.

When there is laser irradiation, the STC reads the voltage of the photoresistor, at this time it is low level. When there is no laser irradiation, the STC reads the voltage of the photoresistor, then it is high level. In this way, when the light of the laser is blocked, a switching effect can be generated in the circuit.

The frequency of sound that can be heard by the human ear is 20Hz to 20kHz, and the frequency of harp notes should also be in this range. It's just that different notes have their own fixed frequency.

Features:
- Auto Play
- Laser Light
- Power at 5V DC
- 21 Notes (7 gropup of 3)
- Switch for High, Medium and Low sounds

Components:
- 1x STC89C52 IC
- 1x 40 Pin DIP
- 7x Laser Diode
- 7x Photoresistor
- 10x 1KΩ Resistors
- 9x 10KΩ Resistors
- 1x 12.000 MHz Quartz
- 2x 30 pF Ceramic Capacitors
- 1x 10uF Electrolytic Capacitor
- 2x Buttons
- 1x DC connector
- 1x Transistor S8550
- Heat shrink tubing
- 3x Green LED 3mm
- 7x Red LED 3mm
- 1x Buzzer
- 1x Main PCB
- 3x PCB for structure
- 4x PIN (for USB)
- USB to DC cable

- Extra components are included with the KIT, like Resistors, LED and Pins.. I think they have been put as spare parts, I'm not sure.. they are still useful for other projects :)

✅ Subscribe to my YouTube channel It's FREE!

Chapters:
0:00 - Intro
0:49 - Unboxing
1:22 - Explanation
1:57 - Assembly
6:40 - TEST
9:07 - End

⚠WARNING Laser: Always use the necessary protections with LASER!!!

■▬▬▬▬▬ LINK & Support ▬▬▬▬▬■
✅ YouTube: youtube.com/c/Stefano91ste
✅ Instagram: instagram.com/Stefano91ste
✅ Pinterest: https://www.pinterest.it/Stefano91ste
✅ My STORE: youtube.com/c/Stefano91ste/store

Watch another video =)
● Music Keyboard: youtu.be/ajtR6eDOaQI
● LED Water Level: youtu.be/n9GB0nfwG8s
● Police Light: youtu.be/PtmEqcRbu4w
● Vu-Meter Stereo: youtu.be/l8oUQpGAOCw
● Traffic Light: youtu.be/6iRjZMHVvhs
● Vu-Meter 40 LED: youtu.be/oWB2faToGAA
● Voltage Detector: youtu.be/yRWRsSASQTc

WARNING: This video is only for demonstration. I don't take any responsibility.

#LASER #HARP #TUTORIAL

IR Tester Circuit with LM358 - Breadboard DIY

Stefano91ste 2021-02-07 | This circuit, through a receiving IR diode, is able to see the IR light and in response turns on the Red LED. The IC I used is a LM358 (Low Power Operational Amp)
✅ Subscribe to my YouTube channel It's FREE!

Components:
- 1x LM358 IC
- 1x Resistor 220Ω
- 1x Resistor 6.8KΩ
- 1x Resistor 10KΩ
- 1x Resistor 47KΩ
- 1x Resistor 680KΩ
- 1x IR LED (RX)
- 1x LED 5mm
- 1x 4.7 uF Capacitor
- 1x 100nF Capacitor

My Breadboard PSU: youtu.be/rxcrKLED1R0

Chapters:
0:00 - Intro
0:30 - Test

■▬▬▬▬▬ LINK & Support ▬▬▬▬▬■
✅ YouTube: youtube.com/c/Stefano91ste
✅ Instagram: instagram.com/Stefano91ste
✅ Pinterest: https://www.pinterest.it/Stefano91ste
✅ My STORE: youtube.com/c/Stefano91ste/store

Watch another video =)
● Music Keyboard: youtu.be/ajtR6eDOaQI
● LED Water Level: youtu.be/n9GB0nfwG8s
● Police Light: youtu.be/PtmEqcRbu4w
● Vu-Meter Stereo: youtu.be/l8oUQpGAOCw
● Traffic Light: youtu.be/6iRjZMHVvhs
● Vu-Meter 40 LED: youtu.be/oWB2faToGAA
● Voltage Detector: youtu.be/yRWRsSASQTc

WARNING: This video is only for demonstration. I don't take any responsibility.

#LM358 #diyprojects #Breadboard

LED Heart DIY with NE555 - PCB Tutorial

Stefano91ste 2021-01-31 | ► $2 for 2-Layer PCBs & $7 for 4-Layer PCBs: jlcpcb.com
This is a circuit for making a LED Heart, a nice gift for someone special. The "heart" of this project is an NE555 IC configured as Astable Multivibrator. This circuit must be powered with 5-12V DC.

After trying the excellent service offered by JLCPCB I recommend it, the quality of the PCB is high, customer service is always available and professional, the time of realization is short and the delivery of PCBs is by express courier. JLCPCB is a great place to get hight quality custom circuit boards at an extremely low price, you can buy 5 PCB Boards (Any Color) for 2$ !!!

Components:
- 1x NE555
- 16x LED 5mm
- 16x 560Ω Resistors
- 1x 10KΩ Resistor
- 1x 10uF Electrolytic Capacitor
- 1x 100nF Capacitor
- 1x 8 Pin Socket
- 2x PIN or Wire (Vcc & Gnd)
- 1x 100KΩ Trimmer

- PCB (Ready for jlcpcb.com): drive.google.com/file/d/1BoKaKzr8_Bjs8uL5ucDKhYuPN7utMEJg/view?usp=sharing
*Don't use my PCB for profit or sponsored videos.

✅ Visit My STORE: youtube.com/c/Stefano91ste/store
✅ Subscribe to my YouTube channel It's FREE!

For any other questions you can ask me for explanations in the video comments:)

Chapters:
0:00 - Intro
0:13 - Explanation
2:02 - PCB
2:30 - Unboxing
3:05 - Assembly
4:42 - Test
6:10 - END

■▬▬▬▬▬ LINK & Support ▬▬▬▬▬■
✅ YouTube: youtube.com/c/Stefano91ste
✅ Instagram: instagram.com/Stefano91ste
✅ Pinterest: https://www.pinterest.it/Stefano91ste
✅ My STORE: youtube.com/c/Stefano91ste/store

Watch another video =)
● Music Keyboard: youtu.be/ajtR6eDOaQI
● LED Water Level: youtu.be/n9GB0nfwG8s
● Police Light: youtu.be/PtmEqcRbu4w
● Vu-Meter Stereo: youtu.be/l8oUQpGAOCw
● Traffic Light: youtu.be/6iRjZMHVvhs
● Vu-Meter 40 LED: youtu.be/oWB2faToGAA
● Voltage Detector: youtu.be/yRWRsSASQTc

WARNING: This video is only for demonstration. I don't take any responsibility.

#NE555 #LED #diyprojects

Vintage Grundig T5000 AM/FM Stereo Tuner HiFi - TEST & REPAIR

Stefano91ste 2021-01-24 | I have fixed a GRUNDIG T5000 HiFi Radio!

● Circuit Diagram & Hi-Fi Wiki:
- Hi-Fi Wiki: https://www.hifi-wiki.de/index.php/Grundig_T_5000
- T5000 Circuit Diagram: drive.google.com/file/d/1WxFoGEXtFLLvaxgOS8OLeglPT7qboIoC/view?usp=sharing

✅ Subscribe to my YouTube channel It's FREE!

Chapters:
0:00 - Intro
1:15 - Inside
1:53 - Start Repair
2:59 - END

■▬▬▬▬▬ LINK & Support ▬▬▬▬▬■
✅ YouTube: youtube.com/c/Stefano91ste
✅ Instagram: instagram.com/Stefano91ste
✅ Pinterest: https://www.pinterest.it/Stefano91ste
✅ My STORE: youtube.com/c/Stefano91ste/store

Watch another video =)
● Music Keyboard: youtu.be/ajtR6eDOaQI
● LED Water Level: youtu.be/n9GB0nfwG8s
● Police Light: youtu.be/PtmEqcRbu4w
● Vu-Meter Stereo: youtu.be/l8oUQpGAOCw
● Traffic Light: youtu.be/6iRjZMHVvhs
● Vu-Meter 40 LED: youtu.be/oWB2faToGAA
● Voltage Detector: youtu.be/yRWRsSASQTc

WARNING: This video is only for demonstration. I don't take any responsibility.

#GRUNDIG #Vintage #Radio

Open Source Retro Game Console with ESP32 - ESPlay MICRO v2

Stefano91ste 2021-01-23 | This is ESPlay Micro, a Handheld retro game console.
► ESPlay v2: makerfabs.com/esplay-micro-v2.html

ESPlay Micro is a Handheld game console based on ESP32, with this console you will be able to emulate many retro games for NES, Game Boy, Game Boy Color, Sega Master System, Game Gear ecc. In this video I will try this console, I will also explain how to install new games and add a speaker!

Extra ROMs can be downloaded for free (and legally) from the following link:
Download: github.com/Makerfabs/ESPlay/tree/master/nes

● Features:
- ESP32 WROVER Dual-core processor
- Integrated 4MB Flash + 4MB PSRAM
- Integrated WIFI and Bluetooth 4 BLE
- 800 mAh LiPo Battery
- 2,4" ILI9341 TFT Panel
- Integrated I2S DAC via UDA1334A
- Integrated USB to Serial for programming and debugging
- Built-in TP4054 Li-Po charger
- I2C port for expandable function
- 3.5mm Headphone jack
- Smaller Size, PCB only 100 x 50 mm
- Speaker out

● Improvements over version 1:
- Acrylic Case added
- Upgrade button and caps
- Lipo battery added in the package
- Lipo Charger IC TP4054 for faster charging
- SMD & Standard PAD for ext. speaker
- 2.54” LCD color display

✅ Subscribe to my YouTube channel It's FREE!

Chapters:
0:00 - Intro
0:22 - Unboxing
0:57 - Features
2:02 - Test
2:41 - See Inside
3:33 - Add ROMs
4:18 - Speaker MOD
6:02 - END

■▬▬▬▬▬ LINK & Support ▬▬▬▬▬■
✅ YouTube: youtube.com/c/Stefano91ste
✅ Instagram: instagram.com/Stefano91ste
✅ Pinterest: https://www.pinterest.it/Stefano91ste
✅ My STORE: youtube.com/c/Stefano91ste/store

Watch another video =)
● Music Keyboard: youtu.be/ajtR6eDOaQI
● LED Water Level: youtu.be/n9GB0nfwG8s
● Police Light: youtu.be/PtmEqcRbu4w
● Vu-Meter Stereo: youtu.be/l8oUQpGAOCw
● Traffic Light: youtu.be/6iRjZMHVvhs
● Vu-Meter 40 LED: youtu.be/oWB2faToGAA
● Voltage Detector: youtu.be/yRWRsSASQTc

WARNING: This video is only for demonstration. I don't take any responsibility.

#Retro #Game #ESP32