2 layers18.5 × 11.1 mm
Switch
byrantech/laptop
anyon_e, a highly integrated, high end, open source laptop. Attempt the impossible.
6 parts4.3kMIT
2 layers36.8 × 76.2 mm
Eink pendant
AlanikREDAWN/eink-pendantIt's a PCB! No wait, its a keychain! Actually, its both.
- Size
- 36.8 × 76.2 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 6
- Nets
- 22
- Pads
- 53
- Tracks, vias
- 111, 15
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 17 Jun 2026
- Updated
- 19 Jun 2026
Overview
Eink pendant is an open-source printed circuit board by AlanikREDAWN, from the AlanikREDAWN/eink-pendant repository on GitHub. It is a 2-layer board of 36.8 × 76.2 mm with 6 parts on 22 nets, routed with 111 tracks and 15 vias.
Its parts include 2 connectors, 1 resistor, 1 IC, 1 diode and 1 switch. It belongs with the lEDs and displays boards of this library.
README
README.mdeink Pendant
It's a PCB! No wait, its a keychain! Actually, its both.
The idea for this PCB is, you press a button, and it changes the LED color and the image displayed on the eink display. It's a pretty simple concept, but I still enjoyed making it :)
BOM
| Item | Qty | Unit Price | Total Price | Product Link |
|---|---|---|---|---|
| Seeed Studio XIAO RP2040 | 1 | $3.79 | $3.79 | https://www.seeedstudio.com/XIAO-RP2040-v1-0-p-5026.html |
| 2.9" Monochrome eInk / ePaper Display | 1 | $9.99 | $9.99 | https://www.seeedstudio.com/2-9-Monochrome-ePaper-Display-with-296x128-Pixels-p-5782.html |
| ePaper Driver Board for Seeed Studio XIAO | 1 | $4.66 | $4.66 | https://www.seeedstudio.com/ePaper-breakout-Board-for-XIAO-V2-p-6374.html |
| Cherry MX Blue Clicky RGB Switches | 10 | $0.445 | $4.45 | https://www.thockking.com/products/cherry-mx-blue-rgb-switches?variant=42102661087448 |
| NeoPixel Diffused 5mm Through-Hole LED | 1 | $4.95 | $4.95 | https://www.digikey.com/en/products/detail/adafruit-industries-llc/1938/6827082 |
| 330 Ohm Metal Film Resistor | 5 | $0.10 | $0.50 | https://www.digikey.com/en/products/detail/koa-speer-electronics-inc/MF1-4LCT52R331J/21679525 |
| 3.7V Lipo Battery | 1 | $8.99 | $8.99 | https://www.amazon.com/Qimoo-Battery-Rechargeable-Connector-Electronic/dp/B0CNLPBM2L?nsdOptOutParam=true&sr=8-7 |
| PCB | 5 | N/A | $2.00 | N/A |
Cart Screenshots
Screenshots
Parts
6| Qty | Value | Footprint | References |
|---|---|---|---|
| 1 | 330 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1 |
| 1 | Driver_Left | Connector_PinHeader_2.54mm:PinHeader_1x07_P2.54mm_Vertical | J4 |
| 1 | Driver_Right | Connector_PinHeader_2.54mm:PinHeader_1x07_P2.54mm_Vertical | J3 |
| 1 | MOUDLE-SEEEDUINO-XIAO | footprints:XIAO-RP2040-DIP | U1 |
| 1 | NeoPixel_THT | LED_THT:LED_D5.0mm-4_RGB | D1 |
| 1 | SW_Push | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SW1 |
Questions
How big is the Eink pendant PCB?
It measures 36.8 × 76.2 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Eink pendant use?
6 parts. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Eink pendant KiCad files?
From the AlanikREDAWN/eink-pendant repository on GitHub, at the commit this page was made from: the board is PCB/eink-pendant.kicad_pcb and its schematic PCB/eink-pendant.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Eink pendant design in my own project?
Its repository states no licence, so its author keeps all rights: ask AlanikREDAWN before reusing the design.
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