2 layers76.2 × 50.8 mm
2 layers28.4 × 17 mm
Gca
0x007E/gcaGamecard Adapter
- Size
- 28.4 × 17 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 18
- Nets
- 10
- Pads
- 39
- Tracks, vias
- 31, 27
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 11 Mar 2026
- Updated
- 1 Jun 2026
Overview
Gca is an open-source printed circuit board by 0x007E, from the 0x007E/gca repository on GitHub. It is a 2-layer board of 28.4 × 17 mm with 18 parts on 10 nets, routed with 31 tracks and 27 vias.
It is built around the AT24CM02-SSHM-T. Its parts include 6 resistors, 2 capacitors, 1 IC, 1 connector and 1 switch.
Main components
1README
README.md
GCA - Game Card Adapter
The GCA is a board with a AT24CM0X EEPROM or any other compatible EEPROM. The board itself can be driven with a voltage from 3V3-5V and is used chainload games onto the GamePad over the integrated bootloader (currently under development).
| Experience | Level |
|---|---|
| Soldering | |
| Mechanical |
Downloads
| Type | File | Description |
|---|---|---|
| Schematic | pdf / cadlab | Schematic files |
| Board | pdf / cadlab | Board file |
| Drill | Drill file | |
| BoM | xlsx / html | Bill of Material as Excel/interactive HTML |
| PCB | zip / tar | KiCAD/Gerber/BoM/Drill files |
| Mechanical | zip / tar | FreeCAD/Housing and PCB (STEP/STL) files |
Hardware
The pcb is created with KiCAD, the housing with FreeCAD. All files are built with github actions so that they are ready for a production environment.
PCB
The circuit board is populated on both sides (Top, Bottom). The best way for soldering the SMD components is within a vapor phase soldering system and for the THT components with a standard soldering system.
Top Layer
Bottom Layer
Mechanical
The housing has a tolerance of 0.2mm on each side of the case. So the pcb should fit perfectly in the housing. The tolerance can be modified with FreeCAD in the Parameter Spreadsheet.
Assembled
Exploded
Additional Information
| Type | Link | Description |
|---|---|---|
| AT24CM02 | 2-MBit serial EEPROM dataseheet | |
| AT24CM01 | 1-MBit serial EEPROM datasheet |
Parts
18| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | 10k | Resistor_SMD:R_1206_3216Metric | R1, R2, R3 |
| 2 | 3k3 | Resistor_SMD:R_1206_3216Metric | R4, R5 |
| 2 | SolderJumper_2_Open | Jumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP1, JP2 |
| 1 | 0 | Resistor_SMD:R_1206_3216Metric | R6 |
| 1 | 100n | Capacitor_SMD:C_1206_3216Metric | C2 |
| 1 | 10u | Capacitor_Tantalum_SMD:CP_EIA-6032-28_Kemet-C | C1 |
| 1 | AT24CM02-SSHM | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U1 |
| 1 | BIN | Symbol:WEEE-Logo_4.2x6mm_SilkScreen | FID3 |
| 1 | Conn_01x05_Pin | Connector_PinHeader_2.54mm:PinHeader_1x05_P2.54mm_Horizontal | J2 |
| 1 | ESD | Symbol:ESD-Logo_6.6x6mm_SilkScreen | FID1 |
| 1 | MountingHole_Pad | MountingHole:MountingHole_2.7mm_M2.5_DIN965_Pad | H1 |
| 1 | OH | Symbol:OSHW-Logo_5.7x6mm_SilkScreen | FID2 |
| 1 | QR | Images:QR_0x007e_very_small | FID4 |
| 1 | SW_SPDT | Button_Switch_SMD:SW_SPDT_CK_JS102011SAQN | SW2 |
Questions
How big is the Gca PCB?
It measures 28.4 × 17 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Gca use?
18 parts, built around the AT24CM02-SSHM-T. 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 Gca KiCad files?
From the 0x007E/gca repository on GitHub, at the commit this page was made from: the board is pcb/GCA.kicad_pcb and its schematic pcb/GCA.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Gca design in my own project?
Its repository states no licence, so its author keeps all rights: ask 0x007E before reusing the design.
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