I have some code that is writing a 24LC256 EEPROM. The data comes over the USB as Intel Hex which it interprets and writes over the I2C bus. I am getting random '2's coming back over the USB to my COM port. This could be the endTranmission's return code for an I2C address NAK. But my code does not t…

IC2 Wire.endTransmission returning unrequested result byte to Serial.write()?

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