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 layers42.5 × 42 mm
Bitlace Pendant
lillylike123/LED-KeychainMy very own mini LED keychain!!! My very first hardware project ever made <3
- Size
- 42.5 × 42 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 6
- Nets
- 19
- Pads
- 42
- Tracks, vias
- 109, 2
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 17 Jun 2026
- Updated
- 19 Jun 2026
Overview
Bitlace Pendant is an open-source printed circuit board by lillylike123, from the lillylike123/LED-Keychain repository on GitHub. It is a 2-layer board of 42.5 × 42 mm with 6 parts on 19 nets, routed with 109 tracks and 2 vias.
Its parts include 4 connectors, 1 IC and 1 switch. It belongs with the ESP32 and RISC-V boards of this library.
README
README.mdLED Keychain
My very own mini LED keychain!!! It's a cute little LED keychain that changes the animation when moved. For example, if you pick up your keys, they will have a smiley face! You can put this on your keys, purse, backpack, or wallet. I hope you enjoy my first-ever hardware creation. Made with love <3 by Amira!
No picture yet cause it's not assembled!
| Component | Description | Quantity |
|---|---|---|
| Microcontroller | Seeed Studio XIAO ESP32-C3 | 1 |
| LED Matrix | WS2812B 8x8 LED Matrix | 1 |
| Sensor | PIR Motion Sensor | 1 |
| Battery | LiPo Battery (3.7V) | 1 |
| Connector | JST-PH 2.0mm 2-pin (Battery) | 1 |
| Headers | 2.54mm Pitch Header Pins | ~15 |
| PCB | Custom "Bitlace" PCB (34mm x 34mm) | 1 |
| Fasteners | M2 x 6mm Machine Screws | 4 |
| Enclosure | 3D Printed Case (PLA/PETG) | 1 Set |
| Misc | 22AWG Silicone Wire | As needed |
Parts
6| Qty | Value | Footprint | References |
|---|---|---|---|
| 1 | Conn_01x02 | Connector_JST:JST_PH_S2B-PH-K_1x02_P2.00mm_Horizontal | J2 |
| 1 | Conn_01x03_Pin | Connector_PinHeader_2.54mm:PinHeader_1x05_P2.54mm_Vertical | J3 |
| 1 | Conn_01x05_Pin | Connector_PinHeader_2.54mm:PinHeader_1x05_P2.54mm_Vertical | J1 |
| 1 | Conn_01x08_Pin | Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_Vertical | J4 |
| 1 | SW_Push | Button_Switch_THT:SW_Tactile_SPST_Angled_PTS645Vx31-2LFS | SW1 |
| 1 | XIAO-ESP32-C3-SMD | 1_My_custom_libary:xiao_esp32c3 (1) | U1 |
Questions
How big is the Bitlace Pendant PCB?
It measures 42.5 × 42 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Bitlace 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 Bitlace Pendant KiCad files?
From the lillylike123/LED-Keychain repository on GitHub, at the commit this page was made from: the board is Bitlace_Pendant.kicad_pcb and its schematic Bitlace_Pendant.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Bitlace Pendant design in my own project?
Its repository states no licence, so its author keeps all rights: ask lillylike123 before reusing the design.
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