I use the Atmega328P for a lot of my projects, but got tired of hooking up the same circuit on the breadboard everytime I wanted to program one of them. So I decided to build a board for easy programming and where all the I/O-pins available. After finishing the board I made a shield with a double digit seven segment display to test my newest creation.
I plan to build other shields and interface it with my Raspberry Pi for future projects.