GREMBLE.
Workshop · Vancouver B.C.
GRM-06 · Hardware · Working prototype

CRYPTiD

Pocket voice-capture device.

ESP32-S3
Microcontroller
1.8 in
AMOLED screen
Three device screens side by side: the idle status screen, a recording timer with the button lit, and an inscribed note.
Fig. 1 · Device screens drawn by the firmware's own code: idle, recording, inscribed (sample note)
Three device screens: a heard note being processed, a status screen with all checks green, and one with failed jobs and overdue items in red.
Fig. 2 · Device screens redrawn from the firmware's states, sample data: thinking, all clear, and the face when something breaks

Features

  • Custom ESP32-S3 hardware, reverse-engineered down to the display controller.
  • Thin device, local brain: speech runs on the Mac, never the cloud.

A Spec sheet

Board
An ESP32-S3 with a 1.8-inch AMOLED touchscreen
Firmware
Arduino and LVGL
Companion
Swift app on the Mac, using GrembleVoice
Screen
Custom face, fluid-simulation mode
Mode
Capture only

C Related parts

What's Gremble

A Vancouver workshop that builds tools for public affairs and knowledge work, plus apps, open source, hardware and games.

Who's Jason

Jason Craik founded Gremble. He works in public affairs and political risk in Vancouver, advising on government relations, corporate affairs, M&A, market entry, issues and strategy. About Jason → · LinkedIn ↗