This video, via Waveformer, dives into using a free Web tool to create pan automation with the Novation Circuit groovebox.
Here’s what they have to say about the technical details:
“The Novation Circuit is connected by USB to my laptop running the Chrome web browser. The Circuit Bender web application listens to the incoming MIDI messages from the macro controls for Synth 1 and Synth 2 on the Novation Circuit and sends the MIDI messages for synth and drum panning back to the Circuit.
Since macro controls can be recorded and played back by the Circuit, it is possible to achieve pan automation on the Circuit using the Circuit Bender web application. This web application will only work in the Chrome and the Opera web browser, since they support Web MIDI.
This is a hack with some limitations, but it works for me, and I had a lot of fun creating it. Enjoy! “