This is the circuit of a 8 sensors array which is based on Op-Amp.

It is based on LM324 which has 4 Op-Amps per IC. It gives digital output. Currently the output ends are not correctly placed. We have to solder the wires individually at the output points of the IC.


Other wise the sensors work fine.

If you have any suggestions in improving this, please mail me at [email protected]