grainworks

#Hardware

Posts

RadarTV — Raspberry Pi RF-to-Composite Video Broadcast

· 2 min read ·hardware, raspberry-pi, video, radar, c, embedded
A C-based composite video generator that reads aviation radar data and renders it as PAL/NTSC video output from a Raspberry Pi — direct RF to analog TV.

GrainDrop v0.5: A Pocket Recorder, Designed Start to Finish

· 3 min read ·hardware, pcb, kicad, esp32, graindrop

Pocket Recorder — v0.5 Hardware Proto

· 1 min read ·hardware, audio, esp32, proto
A bare-PCB voice recorder with a slider switch. Slide on to record a meeting, slide off to stop. USB-C powered, WiFi sync to Hermes for transcription and note extraction.

Grainworks LoRa Mesh

· 2 min read ·hardware, lora, meshtastic, kicad, iot
A two-component Meshtastic-based system for off-grid rural property coverage — Grain Tag (personal) and Grain Hub (home base).

Tiny Hermes Robot

· 2 min read ·hardware, robot, esp32, iot, ai
A ‘dumb client’ robot design — all intelligence lives on the Hermes backend. ESP32-S3, camera, motors, LoRa fallback.