Quote:
Originally Posted by Hocrest
So will it work with the add on board? or is this one useless?
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You could create a board which would correct the voltage. Basically you create the "92 problem" board, but then connect it in reverse (so that its input is the TxD from the USB, and the output is the RxD on the car). This way, the 3.3V signal from your USB would be stepped up to +5V which the car expects.