Watchy ESP32-S3 E-Paper Watch Mainboard Bare PCB

Description

Watchy ESP32-S3 E-Paper Watch Mainboard Bare PCB

Four-layer wearable mainboard design by SQFMI, with an ESP32-S3 controller footprint and circuitry for an external e-paper display.

Applications

Custom watch firmware, wearable prototypes and compact e-paper projects.

What you receive

One unpopulated mainboard only. Display, battery, strap, enclosure, electronic components and programming are excluded. Nominal board thickness is 1.0 mm. Confirm display, enclosure and firmware compatibility with this pinned hardware revision. This is independently manufactured from the open design, not an official SQFMI watch.

DIYIPCB independently manufactures this open hardware design. It is not an official product of, or endorsed by, the original designer. Images are bare-board CAD previews, not photographs of stocked assemblies. Actual soldermask and surface finish may differ.

PCB order details

• One bare PCB per purchase unit, US$4.00.
• 4 copper layers; nominal thickness 1 mm.
• PCB production lead time: 2-3 days.
• Estimated shipping weight including packaging: 50 g.
• Shipping transit time is additional.

PCBA and customization

Component sourcing, SMT assembly, hand soldering, programming and agreed functional testing are available by quotation. A project manager follows up your requirements. Send the quantity, required connectors, firmware and testing scope. PCBA production lead time: 5-10 days, subject to component availability. PCBA is not included in the bare-board price.

Request a PCBA Quote

Source files and attribution

Original design: sqfmi/watchy-hardware. Version: ESP32-S3 source revision.

• Original GitHub project and assembly documentation
• Pinned source revision 5f147972aa21
• Fabrication files
• License: MIT

Manufacturing uses the original fabrication files. The CAD image copy hides component models for illustration only. Original source and attribution notices are retained.

MIT License

Copyright (c) 2026 SQFMI

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

5% of eligible net product sales supports the Open Hardware Fund, at no extra charge.