# sqfmi/Watchy

Watchy - An Open Source E-Ink Smartwatch

Repository: https://github.com/sqfmi/Watchy
Canonical: https://ross.abutalabs.com/products/watchy
Homepage: http://www.sqfmi.com
Language: C
License: MIT
License Family: permissive
Topics: arduino, arduino-library, iot, smartwatch, e-ink, esp32, bluetooth-low-energy
Last push: 2025-08-19T01:19:38+00:00

## Health v2 (maintenance only)
Score: 40/100 (v2, computed 2026-09-03T02:39:23.370411+00:00)
- activity 37, release rhythm 10, longevity 100
- inputs: {"age_days": 2490, "days_push": 380, "days_rel": 385, "gap_med": null, "n_releases_24m": 1}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2804, forks 426 (observed 2026-08-28T04:07:22.661489+00:00)

## What it is
Watchy is a fully open-source E-Ink smartwatch built on ESP32, accompanied by an Arduino library for developing custom watch faces and firmware. It combines open hardware design with a C/C++ software library for the Arduino ecosystem.

## Use cases
- build a custom e-ink smartwatch
- develop custom watch faces for Watchy
- program an ESP32 wearable with Arduino
- create a low-power e-paper display project
- experiment with BLE-connected wearable firmware
- learn embedded development on open-source hardware

## When to choose
- you want a hackable, fully open-source smartwatch platform
- you prefer Arduino-based ESP32 development for wearables
- you need an ultra-low-power e-paper display device
- you want to customize watch faces and watch firmware yourself

## When to avoid
- you need a polished consumer smartwatch with app ecosystem out of the box
- you require color displays or high-refresh-rate screens
- you want a turnkey wearable without writing or flashing firmware

## Facets
- artifact type: library
- maturity: active
- function: embedded, iot, graphics
- domain: iot, embedded-systems, hardware, developer-tools
- platform: embedded, iot
- tags: e-ink, smartwatch, esp32, arduino-library, open-source-hardware, bluetooth-low-energy, e-paper

## Member repositories
- sqfmi/Watchy (main) score 40

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:22.661489+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T08:14:30.731145+00:00, confidence not recorded.
  - readme: https://github.com/sqfmi/Watchy (fetched 2026-08-28T04:07:22.661489+00:00, sha 19c608641db3)
  - homepage: http://www.sqfmi.com (fetched 2026-08-29T09:54:24.634800+00:00, sha 6d8fcf40b4a9)
- Data as of 2026-08-30T08:39:29.467469+00:00.