Comment by twiclo

Turning my Unihertz Jelly Star into an Xperia Play like device. Basically I want to add a slide up controller to this tiny phone. I was reminded of my Gameboy Micro while watching a review of Mina the Hollower on it and now I'm determined to play that game on this tiny thing. No idea if it will actually run.

Learning FreeCAD to create a sliding insert between the body of the phone and the screen. If I can pull that off the rest should be easy.

Unfortunately the controller board will have to connect to the phone over BT although it will use the phone's battery. I wanted to connect it over USB internally but there's no bus on this phone and trying to hijack the lines running to the USB C port would be feature creep that would stop the project. Another idea was to take over an I2C line going to some peripheral I don't care about but I think that would require a custom android kernel so BT it is.

By the way this phone is awesome. Highly recommend for anyone who wishes they didn't need to carry a smart phone.