The 3.5mm audio jack on Pis up though the Pi4B are output only. The Pi5 doesn't have that feature at all. However, if an audio input can be used by your programming, you could use a USB dongle with a microphone input. You'll need to match voltage levels and impedance, though.Hello all, currently working on a mine clearance project with my team and looking for options on how to connect a metal detector coil to the rasberry pi to read its signals. I understand that you need to use ADC, but I do not know what exactly to look for and how exactly to connect it all. I also heard about the option of connecting to the audio card and then through the jack 3.5 connector to the board, can it work or not?
Biggest problem you're likely to run into (assuming you want to use an ADC) is converting to an appropriate voltage range. What is the output voltage from the detector coil? What input range does the ADC want? What is voltage level for the output of the ADC (you may need a level converter between the ADC and the Pi)? You might also consider looking at the Pi Pico as a device to read the signal and then either do whatever sort of output you want, or feed an output signal to a larger system, such as a B-series Pi.
Should I presume that the intent is to have some sort of rover that either records mine locations for later clearance, or transmits location data to a base station so that there is a map of where in the area the mines are located?
Statistics: Posted by W. H. Heydt — Wed Jan 10, 2024 12:46 am