HI, I'm playing around with I2C using a Sparkfun ESP32 Thing and Kolbans code for i2cscanning ... cscanner.c)I've got a TMP102 (temperature), HMC6352 (compass), MPL3115A5 (altitude) and a ADXL345 (accelerometer). I've tried hooking up all at the same time, as well as testing them individually. The only device that is found by the i2cscanner.c is the HMC6352 (at address 21). None of the othersby depprussell - Serial & I2C Devices