LED Water Level Circuit with ULN2003 - PCB Tutorial

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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.

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Components:
1x ULN2003 IC [ https://bit.ly/3j9ZZpR ]
1x 16 pin DIP [ https://bit.ly/3kc9Ixw ]
8x 1K Resistors [ https://bit.ly/2ytgn3e ]
7x LED 5mm [ https://bit.ly/2UzRDgR ]
1x LED 3mm [ https://bit.ly/39vXOd0 ]
Wire (Like IDE cable)

PCB: (Ready for jlcpcb.com): https://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

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

#Water #Circuit #LED