Peter "Bobricius" Misenko has showcased a new board design that aims to turn the Raspberry Pi 400 keyboard-computer into a true all-in-one, including its own screen and a battery good for around three hours of on-the-go use: the Cyberdetox Display.
"It was [a] quick one-evening project," Misenko writes of the build, which builds on an earlier effort based around an even smaller display than the 2.8" refresh. "Yes it is small," the maker admits. "I [was] search[ing for a] big display [for] three years. All bigger displays are TFT and they are very ugly, this [one of] mine is IPS."
The Raspberry Pi 400's design was inspired by eight-bit home computers like the Atari 400, a key inspiration in its naming, and the Commodore 64. Like its inspiration, all the hardware — an elongated version of the Raspberry Pi 4 Model B single-board computer — is housed within the keyboard chassis itself, but a lack of display prevents it from being a true all-in-one.
That's where the Cyberdetox Display comes in. An oversized PCB with a 2.8" IPS color display, the board connects to the Raspberry Pi 400 via the general-purpose input/output (GPIO) port on the rear and drives the display over the SPI bus. A pair of speakers are included, with holes drilled through the PCB to hide them from view, along with a dedicated power switch.
To carry the idea through to the finish, the board also packs an 18650 battery and a charging circuit with neat shine-through status LEDs — good, its creator says, for around three hours of use per charge.
More details on the project are available in Misenko's Reddit post.