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. This is an 8HP, 3U module. No relation to the original.

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 1, you’ll get a totally random sequence. On mine it’s a 50% chance of a 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 polyrythm sequence. No quantizer here, bring your own.

Neat trick patch: a random sequence, then locked in place with prob=0 or deterministic mode, can be run through a comparator to gate high when it surpasses some voltage. Use that in a VCA to gate the triggers and you’ve got a quantized random rhythm generator!