1-Channel Programmable Percussion Rhythm Machine

thingiverse

This system is highly expandable, featuring multiple channels on a rotating drum with options for additional drums via gearing between vertical and horizontal systems. With more components, you can create an extensive array of percussive triggers. All parts are designed for 3D printing using a CupCake MakerBot except the rubber band, which can be sourced from your local post office. A MakerBot would greatly facilitate building and testing creations. This project is an entry to the makezine.com/go/makerbot contest. To assemble, follow the bill of materials for quantities of each part for the 1-Channel PPRM. Then, using a MakerBot, create the parts and fit them together according to diagrams. A rubber band serves as a spring around the horizontal extensions, pulling the hammer back into a stand-up position. Programming is done by inserting pegs into designated drum holes. By placing various objects in front of the hammer, you can produce unique rhythms. Understanding beats and measures will help fine-tune programming. For increased resolution, use 2:1 gearing with a second machine. Extra programming pins stored within the drum create an alternative non-percussive noise source. If you successfully build this project using a 3D printer, please share your build file and printer type to contribute to the maker community.