"I just connected an Arduino Nano ESP32 to an external motor using an L293D motor driver. I also connected the same GND and 3.3V pins to an INMP441 microphone. As soon as I powered the L293D, the ESP32 became very hot and it burned itself to permanent death - the Arduino IDE doesn't find it anymore. I also want to mention that I didn't have connected the external battery to the L293D for this test. I tested both the motor driver and the INMP441 before I wired them up together. They both worked as intended. The L293D also didn't had a problem with not being connected to an external battery. My question is: Do the two components interfere? And when this is the case, how can I prevent this?"
1 post - 1 participant
