- Urn: Git-like VCS from OpenBSD base tools
- Static site search with suffix arrays
- Matrix rain (2022) refactor
- Fingerprint door lock (LP)
- High-side MOSFET switching
- Wiring ATmega328P
- Fingerprint door lock (RF)
- Web script synthesizer
- Bare-metal ATSAM3X8E (Arduino Due)
- Etlas: e-paper news tracker
- ESP-32 streaming e-reader
- 2D geometry kernel for building design
- Neo4J algorithms contribution