I’m trying to talk to an arduino (FTDI drivers / virtual COM port) via the RS232 node. When I set it to COM1, all is fine. on COM11 or COM27, however, I get a 1 on the “connected” pin, but messages aren’t received by the arduino. If I cross-check in the arduino IDE, it works.
(yes, I’ve made sure the other app isn’t blocking the port).