Yes, Phidgets themselves usually have their own API (e.g. libphidget22) that you can access from Python, C, Java, etc.
To get Chataigne to “see” Phidgets data, you’d need to send that data via something Chataigne understands: OSC is a good bet. For instance, write a small script/program that reads sensors from Phidgets and sends OSC messages out on localhost or over network.
In Chataigne, set up an OSC input that listens to those messages, maps them to whatever you want (MIDI, triggers, visuals, etc.).
