Monitor PiCam and temperature on a PiTFT via adafruit.io
One Raspberry Pi outside on the deck sending snapshots and temperature data. A second Raspberry Pi somewhere else in the world receiving this data via adafruit.io and displaying it on a PiTFT.
Raspberry Pi Pygame UI basics
This guide starts with the absolute basics to build user interfaces on the PiTFT in Pygame. It shows how to update the screen from a GPI. Then, in reverse, the touch screen is used to control a GPO. Next, a UI framework is introduced - this makes better looking interfaces and more elegant code. Finally, an analog input is used to control a gauge widget on the display.