Leave the computer out and get your data from the Raspberry Pi and other microcontrollers directly via the TFT display with 1.77 inch screen diagonal and 128x160 pixel resolution.
The matte surface and the bright , yet energy-efficient backlight (max. 40 mA with LEDA at 3.3 V) allow use even in bright environments.
The popular ST7735 TFT controller can be controlled By a wide range of devices via SPI thanks to many freely accessible libraries.