I'm using Node-Red to connect a laptop to a Mitsubishi Alpha-2 microcontroller via an usb-serial cable.
The communication doesn't start immediately when I fire up my laptop.
Initially I suspected a permissions issue in Linux, but I'm no longer sure that this is the problem.
Powercycling the Alpha-2 does not work.
Rebooting the laptop does not work.
However, when I restart the Node-RED process (
node-red-restart ), the communication is magically restored. I suspected the first node-red process might have had a different owner but that is not the case, I checked.