Any way to add another "type" to the drop-down list? :)
Yes but I'll just let Felix answer your question this time
You'd need to define a new type of mote/node.
Take a look at the existing predefined motes (https://github.com/LowPowerLab/RaspberryPi-Gateway/tree/master/metrics/_LowPowerLab) such as the motion mote (https://github.com/LowPowerLab/RaspberryPi-Gateway/blob/master/metrics/_LowPowerLab/motionmote.js).