MIDI controller is any piece of equipment that generates and transmits MIDI data to MIDI-enabled devices. In short, if you have buttons on your MIDI controller, you can program those buttons to any sound you want through musical software (ex.: Ableton, Garage Band, etc.). You can also program potentiometers to control effects, volumes, etc..
This instructable will show you how to create your own MIDI Controller using Arduino. With a MIDI controller, you are rarely limited with what you can do. There is endless possibilities and endless fun.
Make a robot friend with Adafruit’s CRICKIT – A Creative Robotics & Interactive Construction Kit. It’s an add-on to our popular Circuit Playground Express, FEATHER and other platforms to make and program robots with CircuitPython, MakeCode, and Arduino. Start controlling motors, servos, solenoids. You also get signal pins, capacitive touch sensors, a NeoPixel driver and amplified speaker output. It complements & extends your boards so you can still use all the goodies on the microcontroller, now you have a robotics playground as well.