From Jenny List on the Hackaday blog:
The BBC micro:bit single board ARM computer aimed at education does not feature as often as many of its competitors in these pages. It’s not the cheapest of boards, and interfacing to it in all but the most basic of ways calls for a slightly esoteric edge connector. We’re then very pleased to see that edge connector turned from a liability into a feature by [Fabien Chouteau] with his handheld console, he uses micro:bits preprogrammed with different games in the manner of game cartridges in commercial consoles.
The micro:bit sits in its edge connector on the underside of a handheld PCB above a pair of AAA batteries, while on the other side are an OLED display and the usual set of pushbuttons. It’s a particularly simple board as the micro:bit contains all the circuitry required to support its peripherals.
He’s coded the games using the Arduino IDE with a modified version of the Arduboy2 library that allows him to easily port Arduboy games written for Arduino hardware. It’s a work in progress as there are a few more features to incorporate, but the idea of using micro:bits as cartridges is rather special. There is a video of the console in action, which we’ve placed below the break.
ɖҿϝիɟթվ created this project to play arcade games on the Micro:bit:
The Micro:bit is a pretty decent platform for teaching kids to program, but you can’t really make arcade-style games for it. You only have two buttons and a 5×5 display. Perhaps enough for a very small snake game, but that’s pretty much it. That’s why I started working on #PewPew FeatherWing as an alternative platform, but at some point I started wondering if it’s really impossible to do it on the micro:bit.
When the most recent version of micropython got the ability to use any pins for I2C, I realized that I can finally connect a display easily. I could use a HT16K33 and a 8×8 LED matrix like on the PewPew, but I decided to try something else — a monochrome OLED display, similar to the one used on many Arduino-based game consoles.
From the Next Thing Co blog:
Community Made: Groboy is a DIY Gaming Handheld Powered by C.H.I.P. Pro
Groboy, created by Groguard, is a C.H.I.P. Pro-powered handheld system designed to run retro console emulators and games on the go.
It’s also a testament to the open source community, readily available data sheets and manufacturing houses, and the tenacity to teach yourself engineering. Groguard, like many of us, is self-taught and pursuing his passion for making through custom projects.
After 4 revisions of the board, Groguard had the design where he wanted it. The custom OSH Park PCB at the heart of Groboy routes signal lines from the 2.8″ TFT display, headphones jack, internal 2500mAh LiPo battery (he estimates 3-5 hours of battery life, though he’s not rigorously tested it), and the PCA9555 I2C GPIO expander, which manages inputs from the 11 onboard buttons, to the respective input and output pins on C.H.I.P. Pro.
From Frank Buss on hackaday.io:
This is my first version of a PCB for building a Vectrex cartridge. I used this for my Kickstarter project for the Bloxorz game. The PCB was manufactured by @oshpark , you can order your board here.
It fits in this 3D printed case from Thingiverse (you can order it here in my Shapeways shop), or in one of the nice new injection molded cartridge shells from Sean Kelly
Frank has launched a Kickstarter campaign:
A puzzle game for the Vectrex, including a version with Vectrex graphics for PC, Mac, iOS and Android
FrankBuss has shared the board on OSH Park:
Up till now I haven’t seen a 6502-based board, and now I’m seeing both at once—a 6502-based expansion board for a Z80-based homebrew computer. Ben Chong, over at Ancient Computing, has done a lot of work around Spencer Owen’s RC2014 Z80 microcomputer kit, including designing an improved Z80 processor card and a 16550 UART board.
the 6502-based CPU board he’s put together is by far the most impressive. On his site Ben outlines his design process, and deep dives into how he got a 6502-based card to talk to a Z80-based system. This isn’t a trivial feat as the two processors have very different design philosophies—with the 6502 using a strict synchronous bus, and the Z80 using a loosely asynchronous bus. He then talks about software before doing some crude performance testing.
The hardware design files are available on GitHub:
ancientcomputing has also shared many projects on OSH Park: