A distributed IoT smart-bin: Zig firmware on a Pi Pico W → a local hub → a tRPC/Prisma/TimescaleDB cloud, with a React 19 dashboard.
The full pipeline in one project — bare-metal firmware reading fill and odor sensors, a hub aggregating devices, a typed tRPC API with TimescaleDB time series, and a live dashboard.
Typed contracts end to end, from a microcontroller with kilobytes of RAM to hypertable queries in the cloud. The seams are the project.