complete for sale $199
Mudras
A eurorack sequencer that translates hand movements into melodies.
eurorack / sequencer / sensor / open source
IC Alchemy / workshop record
Instruments for curious hands.
Open source hardware, firmware, and the notes behind them. Built one module at a time and documented as it happens: what each thing is, how it works, what building it is like, and what you can download.
Projects
01 / the backbone
complete not for sale
Pico2Seq
A sequencer project built in the workshop. Complete, and not for sale.
rp2350 / sequencer / open source
complete coming soon
VelocityEncoder
Velocity sensitive magnetic encoder library. Slow motion gives fine control; fast motion covers large range.
encoder / arduino / library / open source
Experiments
02 / play with it
live
Waves
An oscilloscope in the browser. Two oscillators drive X and Y directly, drawn with WebGL2 persistence buffers and shader-generated phosphor traces.
WebGL2 / no install
Journal
03 / the running record
- Sparsha Sequencer GUI Screens 16 Oct 2026
Store
04 / finished work
Finished modules and tools are sold through the IC Alchemy store. Prices, shipping, and payment live there. This site tells you what the thing is and how it works.
Mudras , $199. A eurorack sequencer that translates hand movements into melodies.