Open-source hardware

Retro PCB mods.

104 open-source retro hardware projects with public PCB files, schematics, and generated 3D board renders. Firmware-only and proprietary projects stay on system pages.

Home consoles

26 projects

Nintendo Entertainment System

2 PCB projects
System page →
NES PRG/CHR ROM combo adapter KiCad PCB render CC-BY-SA-4.0

NES PRG/CHR ROM combo adapter

Open adapter for fitting modern PRG and CHR ROM devices to NES cartridge boards.

MouseBiteLabs/ROM-Adapter-Boards OpenTendo KiCad PCB render TAPR-OHL-1.0

OpenTendo

Open-hardware recreation of the front-loading NES motherboard, maintained as a complete KiCad design.

Redherring32/OpenTendo

Super Nintendo Entertainment System

15 PCB projects
System page →
29F160 to 27C322 adapter KiCad PCB render CC-BY-SA-4.0

29F160 to 27C322 adapter

Open adapter for replacing 27C322-class EPROMs with 29F160 flash memory.

MouseBiteLabs/ROM-Adapter-Boards RP2040 SNES cartridge dumper KiCad PCB render Apache-2.0

RP2040 SNES cartridge dumper

Open RP2040 board for reading and preserving Super Nintendo cartridges.

pakutoma/snes-dumper-rp2040 SNES 27C160 extended adapter KiCad PCB render CC-BY-SA-4.0

SNES 27C160 extended adapter

Open extended adapter for using 27C160 EPROMs in Super Nintendo cartridges.

MouseBiteLabs/ROM-Adapter-Boards SNES 27C160 slim adapter KiCad PCB render CC-BY-SA-4.0

SNES 27C160 slim adapter

Open compact adapter for using 27C160 EPROMs in Super Nintendo cartridges.

MouseBiteLabs/ROM-Adapter-Boards SNES 27C322 extended adapter KiCad PCB render CC-BY-SA-4.0

SNES 27C322 extended adapter

Open extended adapter for using 27C322 EPROMs in Super Nintendo cartridges.

MouseBiteLabs/ROM-Adapter-Boards SNES advanced flash cartridge KiCad PCB render CC-BY-SA-4.0

SNES advanced flash cartridge

Open feature-rich flash cartridge board for Super Nintendo development.

MouseBiteLabs/Super-Nintendo-Cartridges SNES advanced UV EPROM cartridge KiCad PCB render CC-BY-SA-4.0

SNES advanced UV EPROM cartridge

Open advanced Super Nintendo cartridge board for UV-erasable EPROMs.

MouseBiteLabs/Super-Nintendo-Cartridges SNES basic UV EPROM cartridge KiCad PCB render CC-BY-SA-4.0

SNES basic UV EPROM cartridge

Open straightforward Super Nintendo cartridge board for UV EPROMs.

MouseBiteLabs/Super-Nintendo-Cartridges SNES HiROM flash cartridge KiCad PCB render CC-BY-SA-4.0

SNES HiROM flash cartridge

Open flash cartridge board for Super Nintendo HiROM software.

MouseBiteLabs/Super-Nintendo-Cartridges SNES LoROM flash cartridge KiCad PCB render CC-BY-SA-4.0

SNES LoROM flash cartridge

Open flash cartridge board for Super Nintendo LoROM software.

MouseBiteLabs/Super-Nintendo-Cartridges SNES TSOP ROM adapter KiCad PCB render CC-BY-SA-4.0

SNES TSOP ROM adapter

Open TSOP flash-memory adapter for Super Nintendo cartridge boards.

MouseBiteLabs/ROM-Adapter-Boards SNES2VGA KiCad PCB render CC-BY-SA-4.0

SNES2VGA

Open video adapter that converts Super Nintendo RGB output for VGA displays.

jeffqchen/SNES2VGA Super Game Boy link adapter KiCad PCB render CC-BY-SA-4.0

Super Game Boy link adapter

Open link-port adapter for the Super Game Boy Plus project.

MouseBiteLabs/Super-Game-Boy-Plus Super Game Boy Plus MBC5 KiCad PCB render CC-BY-SA-4.0

Super Game Boy Plus MBC5

Open MBC5 cartridge board for standalone Super Game Boy builds.

MouseBiteLabs/Super-Game-Boy-Plus Zeal SNES controller adapter KiCad PCB render Apache-2.0

Zeal SNES controller adapter

Open adapter for using Super Nintendo controllers with Zeal 8-bit computers.

Zeal8bit/Zeal-SNES-Adapter

Nintendo 64

2 PCB projects
System page →
Dreamdumper64 KiCad PCB render BSD-2-Clause

Dreamdumper64

Open N64 cartridge reader and backup tool with a modern KiCad design.

khill25/Dreamdrive SummerCart64 KiCad PCB render GPL-3.0-only

SummerCart64

Open-source N64 flash cartridge with USB, 64DD emulation support, and documented hardware.

Polprzewodnikowy/SummerCart64

Sega Genesis / Mega Drive

2 PCB projects
System page →
Mega Drive USB flash cartridge KiCad PCB render CERN-OHL-S-2.0

Mega Drive USB flash cartridge

Open 32 Mbit Genesis and Mega Drive flash cartridge with USB-C ROM loading.

windsorschmidt/md-flashcart SegaPad2USB KiCad PCB render GPL-3.0-only

SegaPad2USB

Open low-latency USB adapter for Sega Genesis and Mega Drive controllers.

mistepien/segapad2usb

Sega Dreamcast

1 PCB projects
System page →
WASCA KiCad PCB render MIT

WASCA

Open Dreamcast optical-drive emulator and development board.

hitomi2500/wasca

PlayStation

2 PCB projects
System page →
PicoMemcard KiCad PCB render GPL-3.0-or-later

PicoMemcard

Open RP2040 memory-card emulator that stores saves on Mini SD or flash.

dangiu/PicoMemcard PicoStation KiCad PCB render CERN-OHL-P-2.0

PicoStation

Open Raspberry Pi Pico PlayStation 1 optical-drive emulator. Replaces the laser with SD-loaded BIN/CUE.

paulocode/picostation_pcb

Atari 2600

1 PCB projects
System page →
Atari 2600 composite AV mod KiCad PCB render MIT

Atari 2600 composite AV mod

Open composite-video and audio upgrade board for Atari 2600 consoles.

knightfox75/Atari_2600_AV_Mod

Intellivision

1 PCB projects
System page →
PiRTO II Duo KiCad PCB render GPL-3.0-only

PiRTO II Duo

Open Raspberry Pi Pico 2 Intellivision multicart with JLP and save support.

aotta/PiRTOIIDuo

Handhelds

33 projects

Game Boy

25 PCB projects
System page →
Chiplab Game Boy cartridge KiCad PCB render BSD-4-Clause

Chiplab Game Boy cartridge

Open Game Boy cartridge board for studying and testing cartridge-bus behavior.

EmulationOnline/chiplab Flipper Zero Game Boy Link KiCad PCB render CC0-1.0

Flipper Zero Game Boy Link

Open adapter board connecting a Flipper Zero to the Game Boy link port.

BoredModder/FilpperZero_Gameboy_Link Game Boy Camera flash KiCad PCB render Unlicense

Game Boy Camera flash

Open LED flash-ring board for the original Game Boy Camera.

facelesstech/gameboy_camera_flash Game Boy CPLD FRAM 2 MB cartridge KiCad PCB render CC-BY-SA-4.0

Game Boy CPLD FRAM 2 MB cartridge

Open CPLD-based Game Boy flash cartridge with 2 MB ROM and FRAM saves.

sillyhatday/GAMEBOY-CPLD-FRAM-2MB Game Boy MBC5 FRAM 2 MB cartridge KiCad PCB render CC-BY-SA-4.0

Game Boy MBC5 FRAM 2 MB cartridge

Open MBC5 flash cartridge with 2 MB ROM and nonvolatile FRAM saves.

sillyhatday/GAMEBOY-MBC5-2MB Game Boy Pico Link KiCad PCB render MIT

Game Boy Pico Link

Open RP2040 interface board for the Game Boy link port.

agtbaskara/game-boy-pico-link-board Game Boy Printer rev. 2 KiCad PCB render GPL-3.0-only

Game Boy Printer rev. 2

Open replacement PCB for the Nintendo Game Boy Printer.

RWeick/IF-GBP-02-Gameboy-Printer GB Interceptor KiCad PCB render GPL-3.0-or-later

GB Interceptor

Open RP2040 sniffer that captures Game Boy pixel and audio buses for HDMI or capture.

Staacks/gbinterceptor GB-BENCH-G1 KiCad PCB render CC-BY-4.0

GB-BENCH-G1

Open Game Boy bench platform for hardware development and signal testing.

Gekkio/gb-hardware GB-BRK-CART KiCad PCB render CC-BY-4.0

GB-BRK-CART

Open cartridge-bus breakout board for Game Boy hardware development.

Gekkio/gb-hardware GB-BRK-CPU-G1 KiCad PCB render CC-BY-4.0

GB-BRK-CPU-G1

Open first-generation Game Boy CPU breakout and test board.

Gekkio/gb-hardware GB-BRK-CPU-G2 KiCad PCB render CC-BY-4.0

GB-BRK-CPU-G2

Open second-generation Game Boy CPU breakout and test board.

Gekkio/gb-hardware GB-BRK-LINK-A KiCad PCB render CC-BY-4.0

GB-BRK-LINK-A

Open Game Boy link-port breakout with the first connector orientation.

Gekkio/gb-hardware GB-BRK-LINK-B KiCad PCB render CC-BY-4.0

GB-BRK-LINK-B

Open Game Boy link-port breakout with the alternate connector orientation.

Gekkio/gb-hardware GB-BRK-M-XS KiCad PCB render CC-BY-4.0

GB-BRK-M-XS

Open compact Game Boy motherboard signal breakout board.

Gekkio/gb-hardware GB-BRK-SLOT-A KiCad PCB render CC-BY-4.0

GB-BRK-SLOT-A

Open Game Boy cartridge-slot breakout with the first connector orientation.

Gekkio/gb-hardware GB-BRK-SLOT-B KiCad PCB render CC-BY-4.0

GB-BRK-SLOT-B

Open Game Boy cartridge-slot breakout with the alternate connector orientation.

Gekkio/gb-hardware GB-BRK-TR-A KiCad PCB render CC-BY-4.0

GB-BRK-TR-A

Open Game Boy test-rig interposer and signal breakout board.

Gekkio/gb-hardware GB-CART256K-A KiCad PCB render CC-BY-4.0

GB-CART256K-A

Open Game Boy cartridge supporting 128 KB and 256 KB PLCC-32 flash devices.

Gekkio/gb-hardware GB-CART32K-A KiCad PCB render CC-BY-4.0

GB-CART32K-A

Open ROM-only Game Boy flash cartridge for PLCC-32 flash devices.

Gekkio/gb-hardware GB-CARTPP-DIY KiCad PCB render CC-BY-4.0

GB-CARTPP-DIY

Open DIY-friendly Game Boy cartridge dumper and flasher using through-hole parts.

Gekkio/gb-hardware GB-CARTPP-XC KiCad PCB render CC-BY-4.0

GB-CARTPP-XC

Open compact Game Boy cartridge dumper and flasher based on the PIC18F45K50.

Gekkio/gb-hardware GB-LIVE32 KiCad PCB render CC-BY-4.0

GB-LIVE32

Open 32 KB rapid-development cartridge with USB programming for original Game Boy hardware.

Gekkio/gb-hardware GB-MBCTEST KiCad PCB render CC-BY-4.0

GB-MBCTEST

Open cartridge for testing Game Boy memory-bank controller chips.

Gekkio/gb-hardware TypePak KiCad PCB render MIT

TypePak

Open Game Boy cartridge with a Sharp memory display interface.

ImStuBTW/typeboy_and_typepak

Game Boy Color

7 PCB projects
System page →
Squareboi ATF devboard KiCad PCB render CC-BY-4.0

Squareboi ATF devboard

ATF1502 programmable-logic development board for Squareboi cartridges.

ALXCO-Hardware/squareboi Squareboi mainboard KiCad PCB render CC-BY-4.0

Squareboi mainboard

Open DIY Game Boy Color-compatible cartridge-system mainboard.

ALXCO-Hardware/squareboi Squareboi RAM board KiCad PCB render CC-BY-4.0

Squareboi RAM board

Open RAM expansion board for the Squareboi cartridge system.

ALXCO-Hardware/squareboi Squareboi ROM adapter KiCad PCB render CC-BY-4.0

Squareboi ROM adapter

ROM adapter board for the open Squareboi cartridge system.

ALXCO-Hardware/squareboi Squareboi ROM board KiCad PCB render CC-BY-4.0

Squareboi ROM board

Open ROM cartridge board for the Squareboi platform.

ALXCO-Hardware/squareboi Squareboi stackable ROM board KiCad PCB render CC-BY-4.0

Squareboi stackable ROM board

Stackable ROM cartridge board for Squareboi hardware development.

ALXCO-Hardware/squareboi Squareboi Writeboi KiCad PCB render CC-BY-4.0

Squareboi Writeboi

Open programmer shield for writing Squareboi cartridge hardware.

ALXCO-Hardware/squareboi

Game Boy Advance

1 PCB projects
System page →
Game Boy HiFi Audio KiCad PCB render CERN-OHL-P-2.0

Game Boy HiFi Audio

Open GBA audio replacement with ESP32 Bluetooth, an ES8388 codec, speaker output, and headphone output.

cajunpanda/gameboy-hifi-audio

Home computers

34 projects

Commodore 64 / 64C

3 PCB projects
System page →
ESP32 SIDView KiCad PCB render MIT

ESP32 SIDView

Open ESP32 interface board for visualizing and experimenting with SID audio.

tobozo/ESP32-SIDView GenAssister Genesis controller adapter KiCad PCB render GPL-3.0-only

GenAssister Genesis controller adapter

Open adapter for safely using Sega Genesis controllers on Commodore systems.

evietron/BackBit-OpenSource PLAster64 KiCad PCB render GPL-3.0-only

PLAster64

Open programmable logic replacement for the Commodore 64 PLA.

evietron/BackBit-OpenSource

Commodore 128

1 PCB projects
System page →
C128 keyboard diagnostic loopback KiCad PCB render GPL-3.0-only

C128 keyboard diagnostic loopback

Open keyboard-loopback board for Commodore 128 diagnostic harnesses.

evietron/BackBit-OpenSource

Commodore VIC-20

1 PCB projects
System page →
VIC-20 32K RAM cartridge KiCad PCB render MIT

VIC-20 32K RAM cartridge

Open 32 KB memory expansion cartridge for the Commodore VIC-20.

The8BitEnthusiast/vic20-32k-ram-cart

Commodore Amiga

8 PCB projects
System page →
A500 USB keyboard controller KiCad PCB render CC-BY-SA-4.0

A500 USB keyboard controller

Open replacement controller adding USB support to an Amiga 500 keyboard.

jtsiomb/a500kbd Amiga 2000 RGBtoHDMI KiCad PCB render GPL-3.0-only

Amiga 2000 RGBtoHDMI

CPLD RGBtoHDMI adapter for the Amiga 2000 video slot.

LinuxJedi/AmigaRGBtoHDMI Amiga 500 RGBtoHDMI KiCad PCB render GPL-3.0-only

Amiga 500 RGBtoHDMI

CPLD video adapter for capturing the Amiga 500 digital RGB stream with RGBtoHDMI.

LinuxJedi/AmigaRGBtoHDMI Amiga dual floppy interface KiCad PCB render CERN-OHL-P-2.0

Amiga dual floppy interface

Open interface board for attaching two external floppy drives to an Amiga.

roddersuk/AmigaDualFloppyInterface Amiga TICK dual clock KiCad PCB render GPL-3.0-only

Amiga TICK dual clock

Dual-frequency Amiga 2000 TICK clock source using modern SMD parts.

jasonsbeer/Amiga-2000-EATX PAKIA PS/2 keyboard adapter KiCad PCB render GPL-3.0-only

PAKIA PS/2 keyboard adapter

Open ATtiny85 adapter for using PS/2 keyboards with Amiga computers.

dylangageot/pakia RAMesses Agnus memory board KiCad PCB render GPL-2.0-or-later

RAMesses Agnus memory board

Open Amiga Agnus-socket memory expansion and repair board.

LinuxJedi/RAMesses RAMesses Gary adapter KiCad PCB render GPL-2.0-or-later

RAMesses Gary adapter

Open companion adapter board for RAMesses Amiga memory expansions.

LinuxJedi/RAMesses

Apple II / IIe / IIc

5 PCB projects
System page →
Apple II VGA KiCad PCB render MIT

Apple II VGA

Open RP2040 card that generates VGA from the Apple II video bus.

markadev/AppleII-VGA FujiApple DevKit Combo KiCad PCB render CERN-OHL-S-2.0

FujiApple DevKit Combo

Combined Apple II FujiNet and development-kit interface board.

FujiNetWIFI/fujinet-hardware FujiApple IDC-20 DevKit KiCad PCB render CERN-OHL-S-2.0

FujiApple IDC-20 DevKit

Apple II FujiNet development interface using an IDC-20 connection.

FujiNetWIFI/fujinet-hardware FujiApple SmartPort DevKit KiCad PCB render CERN-OHL-S-2.0

FujiApple SmartPort DevKit

Apple II FujiNet development interface with a SmartPort connector.

FujiNetWIFI/fujinet-hardware FujiNet DB-19 adapter KiCad PCB render CERN-OHL-S-2.0

FujiNet DB-19 adapter

DB-19 to IDC-20 SmartPort adapter for Apple II FujiNet hardware.

FujiNetWIFI/fujinet-hardware

Macintosh (68k / early PowerPC)

2 PCB projects
System page →
BlueSCSI KiCad PCB render GPL-3.0-or-later

BlueSCSI

Open RP2040 SCSI device emulator used in compact Macs and other SCSI hosts.

BlueSCSI/BlueSCSI-v2 FujiNet for Macintosh 68k KiCad PCB render CERN-OHL-S-2.0

FujiNet for Macintosh 68k

Open network and storage adapter for classic Macintosh computers.

FujiNetWIFI/fujinet-hardware

IBM PC / XT / AT and clones

1 PCB projects
System page →
PicoGUS KiCad PCB render GPL-2.0-or-later

PicoGUS

Open RP2040 ISA card that emulates Gravis Ultrasound and related audio devices.

polpo/picogus

Atari ST / STE / TT / Falcon

2 PCB projects
System page →
ACSI2STM KiCad PCB render GPL-3.0-or-later

ACSI2STM

Open STM32 ACSI hard-disk emulator.

retro16/acsi2stm Atari Mega USB keyboard adapter KiCad PCB render GPL-3.0-only

Atari Mega USB keyboard adapter

Open RP2040 USB keyboard adapter for Mega ST, Mega STE, and TT computers.

trickydee/ultramegausb-atari-st-rpikbd

Atari 8-bit (400/800/XL/XE)

1 PCB projects
System page →
Atari SIO2SD Mini KiCad PCB render GPL-3.0-only

Atari SIO2SD Mini

Open compact SD-card drive emulator for Atari 8-bit SIO systems.

RichardRozehnal/Atari-SIO2SD-Mini

Tandy Color Computer

1 PCB projects
System page →
FujiNet for CoCo KiCad PCB render CERN-OHL-S-2.0

FujiNet for CoCo

Open Wi-Fi network and storage cartridge for Tandy Color Computers.

FujiNetWIFI/fujinet-hardware

RetroVerse VME computers

7 PCB projects
System page →
BigBoy 68030 KiCad PCB render CERN-OHL-P-2.0

BigBoy 68030

Large-format 68030 retrocomputer processor card.

transistorfet/retroverse Computie VME KiCad PCB render CERN-OHL-P-2.0

Computie VME

68030 VME single-board computer.

transistorfet/retroverse MemBird KiCad PCB render CERN-OHL-P-2.0

MemBird

RetroVerse VME memory expansion card.

transistorfet/retroverse RetroVerse six-slot backplane KiCad PCB render CERN-OHL-P-2.0

RetroVerse six-slot backplane

Six-slot terminated VME backplane for modular retrocomputers.

transistorfet/retroverse RetroVerse SystemBoard PLCC KiCad PCB render CERN-OHL-P-2.0

RetroVerse SystemBoard PLCC

VME system controller and support board using PLCC devices.

transistorfet/retroverse RetroVerse SystemBoard SMT KiCad PCB render CERN-OHL-P-2.0

RetroVerse SystemBoard SMT

VME system controller and support board in SMT form.

transistorfet/retroverse RetroVerse VME extender KiCad PCB render CERN-OHL-P-2.0

RetroVerse VME extender

60 mm VME card extender for development and debugging.

transistorfet/retroverse

Sony VAIO P and similar portables

2 PCB projects
System page →
Koyomi keyboard adapter KiCad PCB render CERN-OHL-S-2.0

Koyomi keyboard adapter

Adapter board for VAIO P keyboards.

TensorFleet/koyomi-keyboard-adapter Koyomi LVDS HAT KiCad PCB render CERN-OHL-S-2.0

Koyomi LVDS HAT

Open Raspberry Pi DPI-to-LVDS board for the VAIO P 1600 x 768 panel, with a documented solder-mask fix.

TensorFleet/koyomi-lvds-hat

Multi-system tools

11 projects

Multi-system controller adapters

1 PCB projects
System page →
4dapter KiCad PCB render GPL-3.0-only

4dapter

Open USB adapter for NES, SNES, Nintendo 64, and Sega Genesis controllers.

timville85/4dapter

Open Source Scan Converter

3 PCB projects
System page →
OSSC Pro extra AV output KiCad PCB render CERN-OHL-P-2.0

OSSC Pro extra AV output

Open OSSC Pro expansion board adding analog VGA and stereo audio outputs.

marqs85/ossc_pro_hw OSSC Pro legacy AV input KiCad PCB render CERN-OHL-P-2.0

OSSC Pro legacy AV input

Open OSSC Pro expansion board for composite, S-Video, and RF input sources.

marqs85/ossc_pro_hw OSSC Pro RAM board KiCad PCB render CERN-OHL-P-2.0

OSSC Pro RAM board

Open low-latency pseudo-SRAM expansion board for OSSC Pro FPGA modes.

marqs85/ossc_pro_hw

RGBtoHDMI

1 PCB projects
System page →
RGBtoHDMI KiCad PCB render GPL-3.0-or-later

RGBtoHDMI

CPLD + Raspberry Pi Zero sampler with published CPLD and Pi software.

hoglet67/RGBtoHDMI

Cartridge readers

6 PCB projects
System page →
sanni cartreader KiCad PCB render GPL-3.0-or-later

sanni cartreader

Open Mega shield and firmware covering NES through many handhelds.

sanni/cartreader SCARAB cartridge diagnostics mainboard KiCad PCB render GPL-3.0-only

SCARAB cartridge diagnostics mainboard

Open mainboard for a modular multi-system cartridge reader and diagnostic tool.

stuart2307/SCARAB SCARAB Game Boy/GBA module KiCad PCB render GPL-3.0-only

SCARAB Game Boy/GBA module

Open Game Boy and Game Boy Advance cartridge module for SCARAB.

stuart2307/SCARAB SCARAB NES module KiCad PCB render GPL-3.0-only

SCARAB NES module

Open NES cartridge module for the SCARAB diagnostic platform.

stuart2307/SCARAB SCARAB Nintendo 64 module KiCad PCB render GPL-3.0-only

SCARAB Nintendo 64 module

Open Nintendo 64 cartridge module for the SCARAB diagnostic platform.

stuart2307/SCARAB SCARAB SNES module KiCad PCB render GPL-3.0-only

SCARAB SNES module

Open Super Nintendo cartridge module for the SCARAB diagnostic platform.

stuart2307/SCARAB