Proximity sensor with Multi Level Indication

Some ideas and experiments can be dangerous. For that you don't risk and damage your self and the environment. I am professional in my business with a lot of experience !
Every video, even that is completed with compliance with the all safety measures.
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Materials / components :
■▬▬# 1 ▬▬■
1. LM358×1
2. 10K VR × 1
3. 220,470×2 and 10k Resistors.
4. IR & Photo diode.
5. 9V Battery.
■▬▬# 2 ▬▬■
1. 3 × LED's
2. 10K VR × 3
3. LM358 ×2
4. 220,470×2 and 10k Resistors.
5. IR & Photo diode.
6. 9V Battery.
1 Circuit Diagram 2:17
2 Circuit Diagram 4:53
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WARNING :
This video is for demonstration and education purpose only. Each demonstration presents risk and hazards that must be fully understood before attempting. And should be performed only by professionals.
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[@sainaidu35]

Best multi range proximity sensor. Good 🙂

[@KrishnaKumari-cm3iv]

Thanks for sharing your knowledge 😃

[@xyzgames3664]

Superb work 🤩

[@breadoflifemeditationandhe466]

It malfunction under sunlight even want adjusted, what's the solution