Area Scanning Rods

[delisinyor3]

Hello to everyone
I am looking for a circuit diagram to light the blue and red LEDs when it detects a space or metal with a simple circuit for the commonly used area scanning bars in our country.


Current Bar

https://resmim.net/i/1.lNZBZ

What I want to do

https://resmim.net/i/2.lNfO6

[Qiaozhi]

Hello to everyone
I am looking for a circuit diagram to light the blue and red LEDs when it detects a space or metal with a simple circuit for the commonly used area scanning bars in our country.


Current Bar

https://resmim.net/i/1.lNZBZ

What I want to do
https://resmim.net/i/2.lNfO6

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