ESP32 suddenly not recognising I2C devices

[Pixmusix]

@Jeff105671 taught me how to use a i2c scanner I found very helpful while debugging.

Adafruit Py Qt 2040 - Thonny - Piicodev

Ah I see it’s a python library not a Linux package. Thanks for the link Based on the pinout of the qt py I have two i2c outs so I modified the code you linked to search both of them. from machine import Pin, SoftI2C def scani2c(i2c): devices = i2c.scan() if len(devices) == 0: print("No i2c device !") else: print('i2c devices found:', len(devices)) for device in devices: print("I2C hexadecimal address: ", hex(device)) i2c_0 = SoftI2C(scl=Pin(25), sd…