This video, via BoBeats, takes a look at using hardware MIDI devices with the Novation Circuit.
This can be used to sync the Circuit with other devices, to allow the Circuit to be used as a hardware sequencer to control other devices, or to control the Circuit with another device.
Un the video, a Kenton Midi Thru-5, Korg Volca Keys and Korg Minilogue are used to demonstrate the setups.
Circuit sends using these channels:
- Synth 1 = MIDI channel 1
- Synth 2 = MIDI channel 2
- Drums 1 to 4 = MIDI channel 10
A Circuit MIDI chart is also available (pdf).