Hi every one,
I am working in PI metal detector but I have problem in reading reflected signal in pin A0 in arduino.
pls any one help me how I can read signal and process it and then output it to the speaker (programmly)
thanks.
Hi, @yakhor
Welcome to the forum.
Have you Googled;
PI metal detector arduino
What model Arduino are you using?
Can you post the code that you currently have?
Can we please have a circuit diagram?
An image of a hand drawn schematic will be fine, include ALL power supplies, component names and pin labels.
Thanks.. Tom.. 
Thanks Mr. Tom
In fact I spent a lot of time in search but I did not get clear explanation .
I want to write arduino code to felezjoo PI me
tal detector, I know it has hex file but I need my code to modify it as I need.
I use arduino UNO.
thanks
Do you have an o-scope?
When I built my PI detector, a o-scope was needed for adjustment.
Are you using a commercial coil or one you made?
I used a +/-5V supply for the op amps.
Forums - Geotech Forums was a big help in getting my design to work.
All what I need is found.
I made the circuit and load the felezjoo`s hex file and it worked good, but I need to build my own code, now I can generate pulse to the coil using timer1.
I need to read the reflected signal and process it in arduino?
As you build PI metal detecor, can you share me it`s code plz?
If the MCU you are using is a Arduino, then you'd use an Arduino to process the it.
No. My circuit is different from yours.
even the MCU was different , I need to benefit from the code, how it will deal with the signal and process it.
thanks
The code I wrote for my PI is for an ESP32 using the ESP32's API and is completely incompatible with a Arduino.
HINT:
CLUE:
POSSIBLE SOURCE OF CODE:
OK thanks
It looks like the original author is not interested in sharing the source code.
ok, he publish the circuit to public, this means any one can build code for it.
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