Watchy

A watch whose face you write yourself.

E-paperOpen sourceESP32Smartwatch

Price: $59
Availability: Listed
Design: Open

Where to buy · 2 shops

Compare with similar devices

Sold through Crowd Supply rather than the maker’s own shop.

Bring along: Arduino or ESP-IDF to change anything.
Keep in mind: Battery capacity is not published; e-paper refresh is slow.

Source checked · Sep 18, 2026

Image credit
Crowd Supply project photo of the Watchy · SQFMI

(02) Blueprint

Build it yourself

Open hardware

Watchy hardware is fully open: KiCad schematic/PCB source, Gerbers, BOM and a schematic PDF are published on GitHub, plus a separate repo of maker-contributed case STL/STEP files.

KiCad schematic source

Read straight from the maker’s repository. Open on GitHub

KiCad schematic source

GitHub

Design files 6

Source 3

git clone https://github.com/sqfmi/watchy-hardware.git

Key parts 3

Espressif ESP32 All ESP32 devicesMCU / Wi-Fi+BLE radioDatasheet
Bosch BMA423All BMA423 devices3-axis accelerometer
NXP PCF8563 All PCF8563 / BM8563 devicesI2C RTCDatasheet

Research notes

All GitHub file/folder links curl-verified 200. Hardware source lives in the separate sqfmi/watchy-hardware repo, not the sqfmi/Watchy Arduino firmware/library repo (also official, listed for completeness).

Every link checked 2026-09-27.

Hand this device to your agent. Everything on this page, as clean Markdown and JSON: specs, shops, prices, design files, parts.

Markdown JSON

Made the Watchy? Put the badge on your README; it links here, with every shop that sells it.

Specifications

Core hardware

Processor: ESP32 with a built-in USB-to-serial adapter for programming
Display: 1.54″ ultra-low-power e-paper · 200 × 200, wide viewing angle
Radio: Wi-Fi and Bluetooth LE
Power: Rechargeable; capacity not stated on the project page

Details from the project page

Sensors: 3-axis accelerometer with gesture detection
Timekeeping: Real-time clock with calendar and alarm
Feedback: Vibration motor and four tactile buttons
Openness: Open-source hardware and software, with many example watch faces
Cases: Injection-moulded plastic case included; 3D-printable case and strap files published; an anodised aluminium case is US$49

Buying

Price: US$59 kit with case on Crowd Supply
Availability: In stock on the day of review

What still needs checking

Crowd Supply project pages describe the campaign rather than a datasheet; dimensions, weight and full electrical specifications are often absent.
Prices and ship dates on Crowd Supply change; re-check before ordering.

Downloads & docs

Crowd Supply project pagecrowdsupply.com Crowd Supplycrowdsupply.com

Trending repos & firmware

Watchy LibraryWatch Framework

4.1k

Open source E-Paper watch framework with Bluetooth LE, Wi-Fi sync, RTC, accelerometer, and 50+ community watch faces.

sqfmi/Watchy

Source & revision notes

Maker listing checked Sep 18, 2026. Detailed documentation reviewed Sep 18, 2026. Not hands-on tested.

Price is a dated listing; confirm with the maker.

Specifications and price were read from the Crowd Supply project page on 2026-09-18; Crowd Supply sells and ships these directly.

Crowd Supply lists accessories and bundles beside the main product; the price here is the product named in this entry, not a bundle.

Capability corrected 2026-09-19: this entry carried a 5 GHz Wi-Fi flag that its own recorded specifications do not support. Removed rather than guessed; if the maker documents 5 GHz, add it back with the source.

Read from the Crowd Supply project page on 2026-09-18; no hands-on testing.

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