Error adding GPIO pins
2377 Views - Created 22/04/2016
The Input/Output error normally means that the Raspberry Pi is having problems communicating with the IO Pi over the I2C bus. Have you tried running the tutorial or demo scripts with the IO Pi powered by the Raspberry Pi instead of an external supply? If you still get the error then it is probably a problem with the I2C configuration in which case it may be worth going through each step in our I2C tutorial to make sure the I2C port is set up correctly.
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