Because of the house rebuild, I had to wait ages to open this box from PCBWay, so long that they’re now celebrating their eighth anniversary. Happy anniversary, PCBWay, and thank you: you’ve always been amazing to me. Inside is a stack of open source retro PCBs from the PCBWay shared projects library, and each one is a future project for the channel. This video is sponsored by PCBWay.
Amiga boards
First, a 1MB RAM expansion for the Amiga 500 and 500 Plus by C64iSTANBUL, with a handy list of compatible RAM printed on the back. Then SukkoPera’s Amiga 600 fast RAM expansion, based on work by Kipper2k, which sits on top of the CPU. SukkoPera has also made an adapter for using a PlayStation controller on an Amiga. I’m not sure why I’d want to, but it looks interesting, so let’s make one.

Commodore 64 and C16
The OpenC64Saver, also by SukkoPera, is a little superhero: it protects a C64 from a failing power supply that can murder it silently. I definitely need it for peace of mind when using my Commodores. There’s also a custom C64 cartridge PCB for Samurai Warrior: The Battles of Usagi Yojimbo, a game I loved back in the day, and the Tapecart microSD board uploaded by C64iSTANBUL, which uses Kim Jørgensen’s work to load PRG, TCRT and P00 files through the C64 tape port. For the C16 and other 264 series machines, SukkoPera’s joystick adapter lets you use 9-pin joysticks instead of the 8-pin DIN type.

Atari boards
For Atari 8-bit computers there’s C64iSTANBUL’s Super Salt diagnostic cartridge PCB, which can also be used for most 8K and 16K Atari ROMs. And for the VCS, the UnoCart 2600 by KneeHighSpy, a low-cost multicart based on an STM32F microcontroller.

Mega Drive pad adapters
Two controller adapters: the MSX Mega Drive adapter by Tor-Eirik Bakke Lunde, giving two-button support with a Mega Drive pad on an MSX, and a Genesis/Mega Drive pad to Atari 7800 adapter by Christopher Belcher. I’ve built a 7800 adapter before, but this version can be cabled and is more flexible.

The project links
If you want to play along at home, here are all the shared projects:
- Amiga 500 Plus 1MB memory expansion by C64iSTANBUL
- OpenAmiga600FastRamExpansion by SukkoPera
- OpenPSX2AmigaPadAdapter by SukkoPera
- OpenC64Saver by SukkoPera
- OpenC16JoyAdapter by SukkoPera
- Samurai Warrior C64 cartridge PCB by C64iSTANBUL
- Tapecart microSD by C64iSTANBUL
- Super Salt diagnostic cartridge for Atari 8-bit by C64iSTANBUL
- UnoCart 2600 by KneeHighSpy
- MSX Mega Drive adapter by Tor-Eirik Bakke Lunde
- Genesis controller to Atari 7800 by Christopher Belcher
Related
Some of these have already been built: see the Mega Drive pad on MSX project, plus my earlier Mega Drive adapter for the Atari 7800 and A600 chip RAM expansion.

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