I have managed to communicate and update firmware on my Ultra Trio Charger.
I have managed this with using broken USB to RS485 converter.
I have tried it and it doesnt work :-(-
I've connected 3-pin to RS232 port.
I got some data comming through, but it doesn't make any sense.
Thanks for answer.
On charger there is 3-pin connector.
So I assume that one pin is GND, one is RX and third is TX.
I will try it and post the...
I recently bought Graupner Ultra Trio Plus 14.
I'm having trouble with understanding, how to connect charger to PC (personal computer)....
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