Four Step Octaved Sequencer Electronics Kit
From "Prototype Post-Mortem: Four-Step Octaved Sequencer", these are the prototype PCBs for a (yet to be totally finished) fun little noise toy.
Comes unassembled. There are 47 components to solder, and it takes about an hour to assemble; it's recommended for those with intermediate soldering experience. 9v battery not included.
Assembly instructions: https://github.com/oskitone/four-step-octaved-sequencer