Legal Removal Request

Post: When you run "i2cdetect -y 1" is it coming up with 0x68 and 0x69? IOError: [Errno 121] Remote I/O error means that it is having problems talking to the ADC chips so could you try changing the line in the demo-readvoltage.py script from [b]adc = ADCPi(bus, 0x68, 0x69, 12) [/b] to [b]adc = ADCPi(bus, 0x68, 0x68, 12)[/b] and then try [b]adc = ADCPi(bus, 0x69, 0x69, 12) [/b] This will try running the script on a single ADC so we can check if it is one of the ADCs that is at fault. If it still shows the same error on both ADCs then that could either mean both chips are not working or there is a problem with Linux that is stopping it from connecting to the I2C bus correctly. Do you have a spare SD card you could use to set up a clean install of Raspbian Linux just to make sure it isn't a problem with your current Raspbian install? It may be worth checking the solder joints on the ADC Pi's GPIO header and the address select header to make sure that there are no dry joints or solder bridges.