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How to get I2C working on Ardbox (20 IO relay)

Erik Olson

18 March 2020

Hi,

Has anyone had any luck getting the I2C bus working on the Ardbox Relay HF+? I have tried multiple I2C devices without any success.

I have been able to successfully program the device and get the other IOs to all wiggle. The DIP switches are set correctly, but no joy. I guess I will need to buy and logic analyzer to see if the bus is active at all.

1 Answer

Best Answer

Hi, Did you connect the pull up resistor?