The BioBoard is an expansion board for the SAK2. It was designed by Mike Sung and contains a wealth of physiological sensors for MIThril 2003 and other related systems. More information is available on Mike's page.
The first BioBoard prototype had a considerable number of incorrect traces, and rewiring the board made it quite flaky (nevermind the analog electronics). I was charged with the task of re-engineering the BioBoard layout and ensuring proper functionality in the final design.
Shown below is the final design in Protel which we sent for fabrication:
