NMEA Checksum in Node-Red

[PaddyB]

Indeed, ToUpperCase did the trick. At least the checksum is now a neat string. Thanks for the hint.
Haven´t worked with SignalK yet, as i don´t want to start with two things at the same time, Node Red gives me already enough time to keep myself busy :-)
Will check out Signal K in the near future, first would like to learn something more about Node Red.

Might make more sense to use the  node-red app inside signalk from the start, Node red can do more running inside signalk.