I added some effects (PO like?) to my DIY arduino midi clock. All effects by midi cc message.
The code is here : https://github.com/ejlabs/arduino-midi-sync/tree/Sample-EFX
Volca Drum + DIY Arduino Midi Clock + Effects

Underwater Videography
I added some effects (PO like?) to my DIY arduino midi clock. All effects by midi cc message.
The code is here : https://github.com/ejlabs/arduino-midi-sync/tree/Sample-EFX