Uploaded July 2020 | Updated September 2026, 3 weeks ago
βΊ $2 for 2-Layer PCBs & $7 for 4-Layer PCBs: jlcpcb.com
This is a Fire Alarm Sensor!
The core of this simple circuit is the LM358 IC. The heat is detected by a thermistor, a resistor that varies its value as the ambient temperature changes. With the 10KO trimmer it is possible to adjust the temperature, at which the alarm will be actived. Finally, the buzzer I used is an active type, a normal buzzer would not sound.
After trying the excellent service offered by JLCPCB I recommend it, the quality of the PCB is high, customer service is always available and professional, the time of realization is short and the delivery of PCBs is by express courier. JLCPCB is a great place to get hight quality custom circuit boards at an extremely low price, you can buy 5 PCB Boards (Any Color) for 2$ !!!
More About JLCPCB: support.jlcpcb.com/collection/1-faqs
β Components:
- 1x LM358 [ bit.ly/2VCFPLy ]
- 1x 10 KΞ© Thermistor [ bit.ly/2yrIhMG ]
- 1x 10 KΞ© Resistor [ bit.ly/2ytgn3e ]
- 2x 330Ξ© Resistors [ bit.ly/2ytgn3e ]
- 1x 10 KΞ© Trimmer [ bit.ly/3cyvozr ]
- 1x Active Buzer* [ bit.ly/2Dadu9w or bit.ly/2VisN6H or bit.ly/2WXNV2S ]
- 2x LED 3mm [ bit.ly/39vXOd0 ]
- 1x 10uF Electrolytic Capacitor [ bit.ly/2WlIgCt ]
- PCB (Ready for JLCPCB): bit.ly/2OYfynO
*Don't use my PCB for profit or sponsored videos.
*Unfortunately I have not found the exact same buzzer that I use in this video on international sites.. I have therefore inserted two alternatives. All buzzers are fine, as long as they are Active
For any other questions you can ask me for explanations in the video comments:)
βΊ Subscribe to my Channel: youtube.com/c/Stefano91ste
Music:
- The lounge by bensound (Circuit Explanations)
- Accidents Will Happen by YouTube Library
Chapters:
0:00 - Intro
0:44 - Explanation
1:50 - Gerber Upload
2:22 - Unboxing
3:23 - Circuit Assembly
5:52 - Test
β β¬β¬β¬β¬β¬ LINK & Support β¬β¬β¬β¬β¬β
Watch another video =)
β Music Keyboard: youtu.be/ajtR6eDOaQI
β Water Level indicator: youtu.be/n9GB0nfwG8s
β Police Light: youtu.be/kG2LQmEtqZo
β Electric Field Detector: youtu.be/4nS8xujHZT8
β Vu-Meter Stereo: youtu.be/l8oUQpGAOCw
β Traffic Light: youtu.be/6iRjZMHVvhs
β Vu-Meter 40 LED: youtu.be/oWB2faToGAA
β Automatic LED Light: youtu.be/fwPQcBr8nwc
β Voltage Detector: youtu.be/yRWRsSASQTc
β Music LED with TIP31: youtu.be/3qZ3uA8hDmE
β NE555 Signal Generator: youtu.be/iYP3Db3jyOQ
Follow me β₯
- YouTube: youtube.com/c/Stefano91ste
- Instagram: instagram.com/Stefano91ste
- Pinterest: https://www.pinterest.it/Stefano91ste
β My STORE: youtube.com/c/Stefano91ste/store
β If you'd like to support the channel: Like, Subscribe, Comment and Share :)
β 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. This fire sensor is to be considered for educational use, it does not have any certification.
#Fire #Tutorial #PCB
βΊ $2 for 2-Layer PCBs & $7 for 4-Layer PCBs: jlcpcb.com
This is a Fire Alarm Sensor!
The core of this simple circuit is the LM358 IC. The heat is detected by a thermistor, a resistor that varies its value as the ambient temperature changes. With the 10KO trimmer it is possible to adjust the temperature, at which the alarm will be actived. Finally, the buzzer I used is an active type, a normal buzzer would not sound.
After trying the excellent service offered by JLCPCB I recommend it, the quality of the PCB is high, customer service is always available and professional, the time of realization is short and the delivery of PCBs is by express courier. JLCPCB is a great place to get hight quality custom circuit boards at an extremely low price, you can buy 5 PCB Boards (Any Color) for 2$ !!!
More About JLCPCB: support.jlcpcb.com/collection/1-faqs
β Components:
- 1x LM358 [ bit.ly/2VCFPLy ]
- 1x 10 KΞ© Thermistor [ bit.ly/2yrIhMG ]
- 1x 10 KΞ© Resistor [ bit.ly/2ytgn3e ]
- 2x 330Ξ© Resistors [ bit.ly/2ytgn3e ]
- 1x 10 KΞ© Trimmer [ bit.ly/3cyvozr ]
- 1x Active Buzer* [ bit.ly/2Dadu9w or bit.ly/2VisN6H or bit.ly/2WXNV2S ]
- 2x LED 3mm [ bit.ly/39vXOd0 ]
- 1x 10uF Electrolytic Capacitor [ bit.ly/2WlIgCt ]
- PCB (Ready for JLCPCB): bit.ly/2OYfynO
*Don't use my PCB for profit or sponsored videos.
*Unfortunately I have not found the exact same buzzer that I use in this video on international sites.. I have therefore inserted two alternatives. All buzzers are fine, as long as they are Active
For any other questions you can ask me for explanations in the video comments:)
βΊ Subscribe to my Channel: youtube.com/c/Stefano91ste
Music:
- The lounge by bensound (Circuit Explanations)
- Accidents Will Happen by YouTube Library
Chapters:
0:00 - Intro
0:44 - Explanation
1:50 - Gerber Upload
2:22 - Unboxing
3:23 - Circuit Assembly
5:52 - Test
β β¬β¬β¬β¬β¬ LINK & Support β¬β¬β¬β¬β¬β
Watch another video =)
β Music Keyboard: youtu.be/ajtR6eDOaQI
β Water Level indicator: youtu.be/n9GB0nfwG8s
β Police Light: youtu.be/kG2LQmEtqZo
β Electric Field Detector: youtu.be/4nS8xujHZT8
β Vu-Meter Stereo: youtu.be/l8oUQpGAOCw
β Traffic Light: youtu.be/6iRjZMHVvhs
β Vu-Meter 40 LED: youtu.be/oWB2faToGAA
β Automatic LED Light: youtu.be/fwPQcBr8nwc
β Voltage Detector: youtu.be/yRWRsSASQTc
β Music LED with TIP31: youtu.be/3qZ3uA8hDmE
β NE555 Signal Generator: youtu.be/iYP3Db3jyOQ
Follow me β₯
- YouTube: youtube.com/c/Stefano91ste
- Instagram: instagram.com/Stefano91ste
- Pinterest: https://www.pinterest.it/Stefano91ste
β My STORE: youtube.com/c/Stefano91ste/store
β If you'd like to support the channel: Like, Subscribe, Comment and Share :)
β 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. This fire sensor is to be considered for educational use, it does not have any certification.
#Fire #Tutorial #PCB
