Uploaded October 2020 | Updated September 2026, 3 weeks ago
► $2 for 2-Layer PCBs & $7 for 4-Layer PCBs: jlcpcb.com
This is a LED circuit for measuring water level, based on ULN2003 a darlington transistor arrays IC. The water level is represented on 7 LEDs, where Red LED indicates lack of water and last green LED indicates 100% of the full tank. This circuit is designed to be used with tap water, do not use it with salt water and any flammable liquid.
Mug with my Logo: youtube.com/c/Stefano91ste/store
After trying the excellent service offered by JLCPCB I recommend it, the quality of the PCB is high, customer service is always available and professional, the time of realization is short and the delivery of PCBs is by express courier. JLCPCB is a great place to get hight quality custom circuit boards at an extremely low price, you can buy 5 PCB Boards (Any Color) for 2$ !!!
More About JLCPCB: support.jlcpcb.com/collection/1-faqs
Components:
- 1x ULN2003 IC [ bit.ly/3j9ZZpR ]
- 1x 16 pin DIP [ bit.ly/3kc9Ixw ]
- 8x 1K Resistors [ bit.ly/2ytgn3e ]
- 7x LED 5mm [ bit.ly/2UzRDgR ]
- 1x LED 3mm [ bit.ly/39vXOd0 ]
- Wire (Like IDE cable)
- PCB: (Ready for jlcpcb.com): bit.ly/3j2yYEH
*Don't use my PCB for profit or sponsored videos.
This circuit must be powered with 12V DC, below I leave the references to view: the electronic circuit diagram, the PCB and the Gerber file to be uploaded directly on the JLCPCB website.
For any other questions you can ask me for explanations in the video comments:)
Chapters:
0:00 - Intro
2:22 - Unboxing
3:03 - Assembly
5:42 - 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.
#Water #Circuit #LED
► $2 for 2-Layer PCBs & $7 for 4-Layer PCBs: jlcpcb.com
This is a LED circuit for measuring water level, based on ULN2003 a darlington transistor arrays IC. The water level is represented on 7 LEDs, where Red LED indicates lack of water and last green LED indicates 100% of the full tank. This circuit is designed to be used with tap water, do not use it with salt water and any flammable liquid.
Mug with my Logo: youtube.com/c/Stefano91ste/store
After trying the excellent service offered by JLCPCB I recommend it, the quality of the PCB is high, customer service is always available and professional, the time of realization is short and the delivery of PCBs is by express courier. JLCPCB is a great place to get hight quality custom circuit boards at an extremely low price, you can buy 5 PCB Boards (Any Color) for 2$ !!!
More About JLCPCB: support.jlcpcb.com/collection/1-faqs
Components:
- 1x ULN2003 IC [ bit.ly/3j9ZZpR ]
- 1x 16 pin DIP [ bit.ly/3kc9Ixw ]
- 8x 1K Resistors [ bit.ly/2ytgn3e ]
- 7x LED 5mm [ bit.ly/2UzRDgR ]
- 1x LED 3mm [ bit.ly/39vXOd0 ]
- Wire (Like IDE cable)
- PCB: (Ready for jlcpcb.com): bit.ly/3j2yYEH
*Don't use my PCB for profit or sponsored videos.
This circuit must be powered with 12V DC, below I leave the references to view: the electronic circuit diagram, the PCB and the Gerber file to be uploaded directly on the JLCPCB website.
For any other questions you can ask me for explanations in the video comments:)
Chapters:
0:00 - Intro
2:22 - Unboxing
3:03 - Assembly
5:42 - 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.
#Water #Circuit #LED
