Cantrip

Cantrip is a simple device providing easy, two way communication to and from USB C and TRS-A MIDI devices. It is powered via USB C and shows up as a MIDI device named “cantrip”.

Tested on MacOS, Windows, iOS and monome Norns. iOS works directly from USB C to USB C on the newer iPads and via the regular or powered CCK (USB camera connection kit) on a lightning connector iPad or iPhone.

Want to add TRS-A MIDI to a Monome norns? Plug the cantrip in via a USB A to C cable and you are good to go!

Want to plug a Wingie MKii into your Mac/PC/iOS device? Now you can!

I needed a way to connect my iPad to the Retrokits RK006 via TRS MIDI. I designed a simple circuit around the Adafruit QTPY that meets the MIDI standard spec for IN and OUT. The TRS-A IN and OUT conform to the “A” standard. If you are needing to use the cantrip with a TRS-B device, you will need an adapter cable.

Cantrip has flashy lights for both MIDI IN and OUT. Keep an eye on what you are doing.

The cantrip has a clear or white translucent case that allows the activity lights to glow through. The white is much more subdued. Dazzling entertainment.

The LED colors listed below signify the corresponding activity:

Green = transport

Orange = CC

Blue = note