Since September 2010, when the Army SERB (Space Experiments Review Board) recommended the Dependable Multiprocessor (DM) CubeSat SERB project be merged with SMDC High Power Nano-Satellite SERB project to proceed as the SMDC TechSat project, the ongoing Honeywell DM project has supported the integrated SMDC TechSat effort. This effort included participation in the successful PDR in May 2011, participation in the successful Flat-Sat Demo in September 2011, and key risk and potential cost reduction efforts including refining the DM payload design to fit the space available in the SMDC TechSat, defining the DM/SMDC TechSat spacecraft interfaces, supporting 3D modeling of the SMDC CubeSat, and the development of the DM CubeSat Testbed, which was the basis for the DM portion of the SMDC TechSat Flat-Sat Demo. The presentation will include a brief overview of DM technology and focus on the development of the DM CubeSat Testbed and its application in the SMDC TechSat Flat-Sat Demo.