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Topic: Connect 2 Arduinos via USB Shield (Read 12 times) previous topic - next topic



I am trying to connect two Arduino Mega via an USB shield (Keyes Funduino) - i.e. one Arduino with the shield and the other Arduino connected via it's USB port to the shield's USB port. I am using Oleg's library from circuitsathome.

My code was built on his FTDI sketch - but when I run it I am always getting the error 0xD (J-state instead of response) message.  The USB task seems to be properly initialised and running.

I am at my wisdom's end - can anyone please point me into the right direction ? The second Arduino will eventually be replaced by a car ECU, so I believe FTDI is the right choice. All ideas appreciated

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