Using a known good USB data/power cable, plug the QT Py RP2040 into a computer running a software synthesizer or a desktop synthesizer with USB MIDI Host capabilities, such as the 1010 Music Blackbox used in the video demo.

The Knobby Sequencer will light up and start playing preset scales!

Let's first just twist some knobs to change the notes. You can also press down on any knob to mute or unmute it, and the corresponding LEDs will go dark or light up to indicated state.

To enter settings mode, double-click the first knob. The settings are adjusted by rotating the knobs for the following functions: