Well, [shabaz] had a great idea: use it as a star map display. The project combines the Arduino, a round TFT, a GPS receiver, and some external flash memory to store data.

Beyond the aforementioned nRF24 module, the current version of the monitor features an Arduino Nano clone, a 128×160 SPI TFT display, and a handful of passives.

This is a simple 0 to 9 counter circuit constructed using Arduino! Here, a common cathode 7-segment LED display is connected to Arduino for displaying the digits. The code (Arduino sketch) allows push ...