A Raspberry Pi touchscreen calculator built around an ILI9341 320×240 SPI TFT and an XPT2046 touch controller. The application includes standard and scientific calculator screens, trigonometry, a ...
The parts are the same as the Micro Journal Rev.2.1. The only difference is the keyboard PCB: the Rev.2.1.mini uses the 48 keys PCB instead of the 68 keys PCB. Most components are readily available ...