Build a MIDI controller that uses 16 rotary encoders soldered to quad rotary encoder breakouts that communicate over I2C. The CircuitPython code uses asyncio and the interrupt pins on the quad rotary encoder breakouts to make the response time nice and speedy for sending your MIDI control change messages.
This guide will show you how to use asyncio with hardware interrupts to make reading the 16 rotary encoders nice and speedy.
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Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.
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