PERFECT, thank you very much for the information

Hello all,

we have a RevPi 4 Connect with Node Red 4.0.9 installed. Is it possbile to update Node Red or are there any problems?

On a "normal" Rasperry the installation script

bash <(curl -sL https://raw.githubusercontent.com/node-red/linux-installers/master/deb/update-nodejs-and-nodered)

is ...

Thank you so much ...
That was the hint. It works now. Also many thanks for the information regarding "/dev/ttyRS485-0". I changed it now under Bookworm, so that should work with Trixie.

Many greetings

Hi all,

I am new in RevPi4 but not new in Raspberry. I want to use the RS485 in Node Red for Modbus to get data from a solar charge controller. In Node Red I use "/dev/ttyRS485" but I get error messages "Error: Error: Permission denied, cannot open /dev/ttyRS485". I read somewhere that is not ...