I almost finished assembling the modular computer. It uses solid state relays unlike the MOSFETs on previous computers. Each board has a specific task and is easily replaced. I found a few flaws but they were easy to work around so I already have a newer design for this set up but will not use it on current projects. The boards are 3" x 3". The stacking connectors did not have enough height for some of the boards. If I removed the sockets it would be good but I prefer to remove chips easily. If I have to make more I am getting the longer connetors.

Boards:
Microcontroller: Netburner MFC5213
Solid State Relay: 2 x Relay Outputs
Analog Input: 2 x Buffered Analog Inputs
Comm: 1 x MAX232 and 1 XBee Radio
Power: 1 5V Regulator and 1 3.3V Regulator

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