Small number of electronic parts and a healthy amount of 3D printing.
If someone uses a hand pc these days, it's almost sure of a smartphone. But a pi of raspberry has a way to get the retro side of an enthusiasm. Add some parts of the old console and a real mechanical keyboard, and have a DIY PC that can fit in the palm.
Called to the Penkesu and is divided into GitHub of a user known as Penk Chen, the project is known as "a retro homemade handy pc". It uses a touch screen of 7.9 inches with a resolution of 400 x 1.280 and a Raspberry PI zero 2 W. Other electronic parts include a 3.7V-Li-PO battery and an Adfruit 1000c engine for power.
3D printed the PC chassis and shared the corresponding STL files and the step file. The manufacturer also used replacement hinges for the Boy Advance SP game to bend the PC.
"The reverted Game Boy Advance SP hinges and the HDMI tape cable are used to keep the hinge thin, but [you maintain] the weight of the screen so you can not overcome," wrote Penske to Github
Those who last from the days when the keyboard boards were not all touch screens, can estimate the compact mechanical keyboard of the Penkesu. It is ortholar, which means that all buttons are in rows and columns aligned as a grid. The keyboard uses Choc-V1 mechanical switches from low Kailh profile and a Pro Micro-MicroControler Arduino board.
If you have not been placed on hand PC, instructions to build your own Penkesu in GitHub are due to the manufacturer has no plans to sell the PC.