MIDI Cable

Plug in a MIDI cable to the MIDI FeatherWing output jack.

The other end of the MIDI cable will plug into your synthesizer, in this case a 1010music nanobox fireball via a DIN-5 to 3.5mm TRS adapter.

USB Host Cable

Plug in the USB MIDI keyboard's cable into the host port on the Feather.

MIDI Out Channel

Press the A button on the OLED FeatherWing to change the MIDI out channel. In this case it has been set to channel 2. You can increment up to 16 and then it will roll back around to 1.

Program Change

Your MIDI keyboard/controller may have buttons for sending Program Change messages. These are used to change the patch preset. The Messenger can increment the Program Change values in sets of eight to make it quicker to try different sounds. 

Press the B button to increment the Program Change number by eight, up to 127, and then back to the beginning.

CC Number

When you adjust a CC knob or slider the Messenger will show which CC number has been changed. This is useful in figuring out which knobs are controlling different parameters.

MIDI Panic

If a MIDI note ever gets stuck you can send a MIDI panic to shut off all notes. Press the C button on the OLED FeatherWing to send MIDI panic.

Play Notes

As you play keys on your MIDI keyboard the Messenger will display the in-coming channel > out-going channel, and the note number. A small o shows up when the note is pressed and disappears when that same note number is released.

Data/Charging/USB MIDI Out

You can plug a USB C cable into the primary USB port of the Feather in order to charge the connected battery, update the firmware, or to forward the filtered MIDI messages along to a connected software synth on a computer (as well as still sending over UART classic MIDI).