bump
Adding device datasheets and Arduino libraries
Added schematic and board fragment for DAC
junk changes
Revert "junk changes"

This reverts commit 97243b9a1354ad9306aaa0645330cbc4b30744ea.
Added schematic and board fragment for ADC
Added document.
Started schematic for SIGuino board.
More work on SIGuino schematic.
Added test program for MCP3426 ADC
Added application note on protecting input pins from overvoltage.
Added input protection diodes to ADC.
Added first draft block diagram of system.
Starting to connect the modules in schematic.
More updates.
More updates.
More updates.
Done.
More updates.
More updates.