2 layers20.5 × 24.8 mm
2 layers0.5 × 19.6 mm
PCB Keychain 2.O
SanaDeghat/PCB_Keychain_2.OIt was so fun the first time so were doing it again!!
- Size
- 0.5 × 19.6 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 8
- Nets
- 8
- Pads
- 32
- Tracks, vias
- 38, 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 4 Apr 2026
- Updated
- 4 Apr 2026
Overview
PCB Keychain 2.O is an open-source printed circuit board by SanaDeghat, from the SanaDeghat/PCB_Keychain_2.O repository on GitHub. It is a 2-layer board of 0.5 × 19.6 mm with 8 parts on 8 nets, routed with 38 tracks and 1 via.
Its parts include 2 capacitors, 2 resistors, 1 IC, 1 diode and 1 connector.
README
README.mdI wanna do this challange where i make a PCb keychain a day so this is day one hehehehe it was so fun the first time so i wanna do it again ykkkk Oki so im domne yippeee Ik this is rly small i just wnated to make something and this is rpetty cool if u ask me What is it? its a battery charging module (Slightly inspired by my friend havign a mental breakdown that her camera battery died today lol) anyways heres some pics ik its so small but. irly wanna make somethign every day ill mke something better tommroow
pcbs:
Schematic:
My lapse of making it:
Parts
8| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | R | OptoDevice:R_LDR_4.9x4.2mm_P2.54mm_Vertical | R1, R2 |
| 1 | 4.7uF | Capacitor_SMD:CP_Elec_3x5.3 | C1 |
| 1 | C | Capacitor_SMD:CP_Elec_3x5.3 | C2 |
| 1 | LED | Button_Switch_THT:SW_CK_JS202011AQN_DPDT_Angled | D1 |
| 1 | LOGO | LOGO | G*** |
| 1 | MCP73831-2-OT | Package_TO_SOT_SMD:SOT-23-5 | U1 |
| 1 | USB_A | Connector_USB:USB3_A_Molex_48393-001 | J1 |
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Questions
How big is the PCB Keychain 2.O PCB?
It measures 0.5 × 19.6 mm and has 2 copper layers, 1.6 mm thick.
What parts does the PCB Keychain 2.O use?
8 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 PCB Keychain 2.O KiCad files?
From the SanaDeghat/PCB_Keychain_2.O repository on GitHub, at the commit this page was made from: the board is Untitled/Untitled.kicad_pcb and its schematic Untitled/Untitled.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the PCB Keychain 2.O design in my own project?
Its repository states no licence, so its author keeps all rights: ask SanaDeghat before reusing the design.