One CubeSat is composed of one top piece, one bottom piece, one side with hole, two sides with windows, one side base, and the rails. The model is based on one designed by based on TJEmsley. TJEmsley can be found on Thingiverse here https://www.thingiverse.com/TJEmsley/designs

The CubeSat Simulator is a low cost satellite emulator that run on solar panels and batteries, transmits real UHF radio telemetry, has a 3D printed frame, and can be extended by additional sensors and modules. This open source project is sponsored by the not-for-profit Radio Amateur Satellite Corporation, AMSAT®