Hello, I’m building a project and its almost ready, but i just bumped into a problem.
The piezo sensor is reading random values. I’m using the following items:
1 Arduino Nano
1 1M resistor between positive and negative of piezo sensor
1 Piezo sensor
the problem im facing starts when i connect the ESP’s CH_PD to ESP’s VCC (There has to be a jumper between CH_PD and VCC) i noticed that as soon as i plug the CH_PD im getting some random values (i belive is noise)
if i use 2 different power supplies i dont get that problem. I’m powering the entire project with the Nano’s USB port. I read that maybe the arduino nano cant supply all that power. What can i do to make it simple and make it work with only ONE power supply? Any ideas are appreciated.