TM2

dual random sequencer, evolving generative melodies

The TM2 is a dual random sequencer, inspired by Music Thing Modular’s Turing Machine. I loved the 2HP TM and wanted a dual version with a somewhat different interface.

The idea is a random sequence of voltages, a knob for probability of change, a knob for sequence repeat length, and a knob for attenuating the final voltage.

With Probability set to 0, you’ll get a repeating sequence. With Probability set to max, there's a 50% chance of each note being replaced with a random value.

There’s a switch to go to a deterministic mode where the Prob knob becomes a position in a predetermined 256 note script. Set the length to something small and it’s a semi-random arpeggiator (two of them). The left trig normals to the right, so you can run two things on one clock, or sum the outputs on your cv mixer for a polyrhythm sequence. No quantizer here, bring your own.

The core is an Arduino Nano, with code available for your tinkering.

https://karltron.com/TM2/