• Agent641@lemmy.world
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      21 days ago

      I’ve seen it do this when the DIP switches on a serial printer are set to a baud rate of 115200 but the PC is sending at 9200bps. Especially when sending graphics, like a logo, but also just when connected and not even receiving a print job.

      You’ve got to edit the printer port in windows to force 115200 baud rate.

      Heaps of these receipt printers still use a serial COM port.