Hello. I'm trying to read values from an industrial scale via sr232 and I've managed to get it working when connected to a pc, however when I connect it to an arduino, the arduino doesn't seem to be receiving anything. The scale is able to send the measured value when being prompted through command…

RS232 working from PC but not from Arduino

jim-p April 13, 2025, 4:25pm 7

You need a null-modem (crossover cable)
A null-modem cable swaps the RX and TX pins as well as the handshaking signals.

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