I have home assistant running on PI 3 B+ and node red to my automations.
I have an Arduino controlling a lock and when I plug it in I get a bad gateway 502 error and it crashes my node red. seems like the serial node did not download completely. I thought i found something that said the serial node is now included in node red.
This is the error I got in the node red log:
4 Jul 16:41:23 - [error] [serialconfig:4a238ee9.c474d] serial port /dev/ttyACM0 error: Error: Error: No such file or directory, cannot open /dev/ttyACM0
I had a PI operating node red with the Arduino before this with no issues. So I wanted to have it included with my home assistant but im stuck.
I also have a zigbee dongle running on one of the ports. I tried to disconnect that and just run the arduino but same issues. Crashed node red but once I unplug it everything goes back to normal.
When you connect does the serial port show in HA? Go to settings → system → hardware → 3 dots top right corner – > all hardware.
If and location is different than /dev/ttyACM0 then go to node red config… in the add on… change safe mode to true restart. Change the serial config to the correct address, deploy.
If it’s not in HA you’ll need to fix that first. Don’t forget trying a diff cable. Is this the node you are using?
I tried to fallow your directions in HA to see the hardware but I don’t seem to have the same path.
I went to configuration > settings but then I’m lost.
I’m attempting a system update now.