DoT-1 stands for Demonstration of Technology-1, the first in a series of SSTL satellites.

Whist the primary objective of the 17.5kg self-funded DoT-1 satellite is to demonstrate SSTL’s new Core Data Handling System (Core-DHS), accommodation was made available for some additional experimental payloads including the Raspberry Pi camera experiment which was designed and implemented in conjunction with the Surrey Space Centre. After image capture using the Raspberry Pi camera, the data was stored on the Raspberry Pi computer and then downlinked to SSTL’s ground station in Guildford via the new Core-DHS. The new Core-DHS is designed to provide the same level of functionality as SSTL’s heritage equivalent avionics stack, but with a significantly reduced mass and volume, and it consolidates the S-Band Transmitter and Receiver, Global Positioning System, Attitude & Orbit Control System, Interface Module and Bridge and On Board Computer into one module.