

Usbgbserial
A Game Boy Serial Link Cable to USB adapter
- Size
- 26.5 × 25 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 13
- Nets
- 32
- Pads
- 71
- Tracks, vias
- 182, 23
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 4
- Created
- 3 Apr 2017
- Updated
- 18 Oct 2026
Overview
Usbgbserial is an open-source printed circuit board by karstx, from the karstx/usbgbserial repository on GitHub. It is a 2-layer board of 26.5 × 25 mm with 13 parts on 32 nets, routed with 182 tracks and 23 vias.
It is built around the ATMEGA32U2-AU. Its parts include 4 capacitors, 3 resistors, 3 connectors, 1 IC and 1 crystal. It belongs with the interfaces and adapters boards and the AVR (ATmega, ATtiny) boards of this library.
Main components
1README
README.mdusbgbserial
⚠️ This project is very much work in progress. Most things are either not done or don't fully work. ⚠️

A USB to Game Link Cable interface.
Parts
13| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | 22 | Resistors_SMD:R_0603_HandSoldering | R2, R3 |
| 2 | 22pF | Capacitors_SMD:C_0603_HandSoldering | C1, C2 |
| 1 | 100nF | Capacitors_SMD:C_0603_HandSoldering | C4 |
| 1 | 10K | Resistors_SMD:R_0603_HandSoldering | R1 |
| 1 | 16Mhz | Crystals:Crystal_SMD_0603-2pin_6.0x3.5mm_HandSoldering | Y1 |
| 1 | 1uF | Capacitors_SMD:C_0603_HandSoldering | C3 |
| 1 | ATMEGA32U2 | Housings_QFP:TQFP-32_7x7mm_Pitch0.8mm | IC1 |
| 1 | AVR_ISP | Pin_Headers:Pin_Header_Straight_2x03_Pitch2.54mm_SMD | P1 |
| 1 | GB_SERIAL | gb-serial-connector:gb-serial | P2 |
| 1 | USB_OTG | Connect:USB_Micro-B | P3 |
The 12 most common of 13 parts.
Questions
How big is the Usbgbserial PCB?
It measures 26.5 × 25 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Usbgbserial use?
13 parts, built around the ATMEGA32U2-AU. 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 Usbgbserial KiCad files?
From the karstx/usbgbserial repository on GitHub, at the commit this page was made from: the board is cad/usbgbserial.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Usbgbserial design in my own project?
Its repository states no licence, so its author keeps all rights: ask karstx before reusing the design.
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