The PSat (Ping-Pong Satellite) is an initiative at the Signal Processing Lab (LPS) of the University of Sao Paulo (USP) to design and develop an educational picosatellite from scratch. This is a followup of the CLTP 3 (below) where I learned the basic concepts to construct such type of device. This satellite has been devised to fit inside a ping-pong ball. Such constraint requires thorough design and specification. All the embedded electronics have been carefully selected in order to have at least the same performance of the previous CanSat. Although it has started as a satellite project, at LPS we envision “down-to-earth” applications as well, e.g. GPS data-logger and sensors network. The project history and further information can be found in the PSat BLOG.