Build your own mini-satellite. AMSAT a non-profit amateur radio organization has the details on how to build a mini-satellite (CubeSat). It is actually a CubeSat simulator with details that include a parts list and AMSAT sells the printed circuit boards. Frame can be made with a 3-D Printer.

We built this CubeSat for fun and to learn how satellites are built. It is for advance builders requiring soldering and some knowledge of the Raspberry Pi and the Arduino IDE.

https://github.com/alanbjohnston/CubeSatSim/wiki