Uploaded August 2020 | Updated September 2026, 3 weeks ago
► $2 for 2-Layer PCBs & $7 for 4-Layer PCBs: jlcpcb.com
This circuit is able to indicate the charge level of a battery, and is designed for 12V batteries.. each LED represents 1.2V (12V / 10 LEDs).. and during normal operation the first Red LED indicates 8V while the last Green LED indicates 12V. You can make the calibration of the Volt Meter by put 12V on the circuit and turning the trimmer until all the LEDs turn ON. With the special round design of this PCB we can use as Volt-Meter car Tuning!
What is a voltmeter?
A voltmeter is an instrument used for measuring electric potential difference between two points in an electric circuit. Analog voltmeters move a pointer across a scale in proportion to the voltage of the circuit; digital voltmeters give a numerical display of voltage by use of an analog-to-digital converter. Voltmeters are made in a wide range of styles. Instruments permanently mounted in a panel are used to monitor generators or other fixed apparatus. Portable instruments, usually equipped to also measure current and resistance in the form of a multimeter, are standard test instruments used in electrical and electronics work. Any measurement that can be converted to a voltage can be displayed on a meter that is suitably calibrated; for example, pressure, temperature, flow or level in a chemical process plant.
After trying the excellent service offered by JLCPCB I recommend it, the quality of the PCB is high, customer service is always available and professional, the time of realization is short and the delivery of PCBs is by express courier. JLCPCB is a great place to get hight quality custom circuit boards at an extremely low price, you can buy 5 PCB Boards (Any Color) for 2$ !!!
More About JLCPCB: support.jlcpcb.com/collection/1-faqs
Components:
- 1x LM3914 IC [ bit.ly/3kiRAlF ]
- 1x Dip 18 Pin [ bit.ly/3kc9Ixw ]
- 1x 56KΩ Resistor [ bit.ly/2ytgn3e ]
- 1x 18KΩ Resistor [ bit.ly/2ytgn3e ]
- 1x 10KΩ Trimmer [ bit.ly/3cyvozr ]
- 1x 3.9KΩ Resistor [ bit.ly/2ytgn3e ]
- 5x Red LED 3mm [ bit.ly/39vXOd0 ]
- 2x Yellow LED 3mm [ bit.ly/39vXOd0 ]
- 4x Green LED 3mm [ bit.ly/39vXOd0 ]
- 1x 1KΩ Resistor (optional) [ bit.ly/2ytgn3e ]
- PCB: (Ready for jlcpcb.com): bit.ly/30gv59d
*Don't use my PCB for profit or sponsored videos.
My Car Video: youtube.com/playlist?list=PL__2OB3tNsdQjBnuD6rjFp1fTrsl5LMcf
My Drone Video: youtube.com/playlist?list=PL__2OB3tNsdQKJ2PqQ_Zj1PeXRv3LVPK9
Chapters:
0:00 - Intro
0:33 - Circuit Explanation
2:30 - JLCPCB Upload
3:07 - Unboxing
4:14 - Volt-Meter Assembly
7:18 - TEST
9:16 - Car TEST
10:16 - END
**JLCPCB have a Technical Support for exporting Gerber files from many software at this link: support.jlcpcb.com/category/23-technical-support
For any other questions you can ask me for explanations in the video comments:)
► Subscribe to my Channel: youtube.com/c/Stefano91ste
■▬▬▬▬▬ LINK & Support ▬▬▬▬▬■
Watch another video =)
● Music Keyboard: youtu.be/ajtR6eDOaQI
● Water Level indicator: youtu.be/n9GB0nfwG8s
● Police Light: youtu.be/kG2LQmEtqZo
● Electric Field Detector: youtu.be/4nS8xujHZT8
● Vu-Meter Stereo: youtu.be/l8oUQpGAOCw
● Traffic Light: youtu.be/6iRjZMHVvhs
● Vu-Meter 40 LED: youtu.be/oWB2faToGAA
● Automatic LED Light: youtu.be/fwPQcBr8nwc
● Voltage Detector: youtu.be/yRWRsSASQTc
● Music LED with TIP31: youtu.be/3qZ3uA8hDmE
● NE555 Signal Generator: youtu.be/iYP3Db3jyOQ
Follow me ♥
- YouTube: youtube.com/c/Stefano91ste
- Instagram: instagram.com/Stefano91ste
- Pinterest: https://www.pinterest.it/Stefano91ste
■ My STORE: youtube.com/c/Stefano91ste/store
● If you'd like to support the channel: Like, Subscribe, Comment and Share :)
■ Do you want to Make a PCB?
Look this: youtu.be/l8oUQpGAOCw
WARNING: This video is only for demonstration. I don't take any responsibility for damage to things, people and animals.
#LM3914 #Voltmeter #Tuning
► $2 for 2-Layer PCBs & $7 for 4-Layer PCBs: jlcpcb.com
This circuit is able to indicate the charge level of a battery, and is designed for 12V batteries.. each LED represents 1.2V (12V / 10 LEDs).. and during normal operation the first Red LED indicates 8V while the last Green LED indicates 12V. You can make the calibration of the Volt Meter by put 12V on the circuit and turning the trimmer until all the LEDs turn ON. With the special round design of this PCB we can use as Volt-Meter car Tuning!
What is a voltmeter?
A voltmeter is an instrument used for measuring electric potential difference between two points in an electric circuit. Analog voltmeters move a pointer across a scale in proportion to the voltage of the circuit; digital voltmeters give a numerical display of voltage by use of an analog-to-digital converter. Voltmeters are made in a wide range of styles. Instruments permanently mounted in a panel are used to monitor generators or other fixed apparatus. Portable instruments, usually equipped to also measure current and resistance in the form of a multimeter, are standard test instruments used in electrical and electronics work. Any measurement that can be converted to a voltage can be displayed on a meter that is suitably calibrated; for example, pressure, temperature, flow or level in a chemical process plant.
After trying the excellent service offered by JLCPCB I recommend it, the quality of the PCB is high, customer service is always available and professional, the time of realization is short and the delivery of PCBs is by express courier. JLCPCB is a great place to get hight quality custom circuit boards at an extremely low price, you can buy 5 PCB Boards (Any Color) for 2$ !!!
More About JLCPCB: support.jlcpcb.com/collection/1-faqs
Components:
- 1x LM3914 IC [ bit.ly/3kiRAlF ]
- 1x Dip 18 Pin [ bit.ly/3kc9Ixw ]
- 1x 56KΩ Resistor [ bit.ly/2ytgn3e ]
- 1x 18KΩ Resistor [ bit.ly/2ytgn3e ]
- 1x 10KΩ Trimmer [ bit.ly/3cyvozr ]
- 1x 3.9KΩ Resistor [ bit.ly/2ytgn3e ]
- 5x Red LED 3mm [ bit.ly/39vXOd0 ]
- 2x Yellow LED 3mm [ bit.ly/39vXOd0 ]
- 4x Green LED 3mm [ bit.ly/39vXOd0 ]
- 1x 1KΩ Resistor (optional) [ bit.ly/2ytgn3e ]
- PCB: (Ready for jlcpcb.com): bit.ly/30gv59d
*Don't use my PCB for profit or sponsored videos.
My Car Video: youtube.com/playlist?list=PL__2OB3tNsdQjBnuD6rjFp1fTrsl5LMcf
My Drone Video: youtube.com/playlist?list=PL__2OB3tNsdQKJ2PqQ_Zj1PeXRv3LVPK9
Chapters:
0:00 - Intro
0:33 - Circuit Explanation
2:30 - JLCPCB Upload
3:07 - Unboxing
4:14 - Volt-Meter Assembly
7:18 - TEST
9:16 - Car TEST
10:16 - END
**JLCPCB have a Technical Support for exporting Gerber files from many software at this link: support.jlcpcb.com/category/23-technical-support
For any other questions you can ask me for explanations in the video comments:)
► Subscribe to my Channel: youtube.com/c/Stefano91ste
■▬▬▬▬▬ LINK & Support ▬▬▬▬▬■
Watch another video =)
● Music Keyboard: youtu.be/ajtR6eDOaQI
● Water Level indicator: youtu.be/n9GB0nfwG8s
● Police Light: youtu.be/kG2LQmEtqZo
● Electric Field Detector: youtu.be/4nS8xujHZT8
● Vu-Meter Stereo: youtu.be/l8oUQpGAOCw
● Traffic Light: youtu.be/6iRjZMHVvhs
● Vu-Meter 40 LED: youtu.be/oWB2faToGAA
● Automatic LED Light: youtu.be/fwPQcBr8nwc
● Voltage Detector: youtu.be/yRWRsSASQTc
● Music LED with TIP31: youtu.be/3qZ3uA8hDmE
● NE555 Signal Generator: youtu.be/iYP3Db3jyOQ
Follow me ♥
- YouTube: youtube.com/c/Stefano91ste
- Instagram: instagram.com/Stefano91ste
- Pinterest: https://www.pinterest.it/Stefano91ste
■ My STORE: youtube.com/c/Stefano91ste/store
● If you'd like to support the channel: Like, Subscribe, Comment and Share :)
■ Do you want to Make a PCB?
Look this: youtu.be/l8oUQpGAOCw
WARNING: This video is only for demonstration. I don't take any responsibility for damage to things, people and animals.
#LM3914 #Voltmeter #Tuning
