This is a simple servo control board with two options for power. There is a direct connection for 5V power sources like a 4 cell NiCd (I know that's 4.8V but it works.) in the top left hand corner, and a spot for a 7805 or similar voltage regulator with a higher voltage input in the top right.
There is no provision for splitting the servo power from the PIC power. I was trying to keep it simple.
C1 is just a capacitor across the power to filter any spikes from the motors. SV1 through SV11 are the servo connectors. just solder a three pin header in for each. Although they were made to fit servo connectors, there is no reason you couldn't plug a sensor in some of those headers. The power and ground are useful for most sensors. Just remember that the PIC I/O pin is connected to the inside pin, the middle pin is power and the outside pin is ground. That should be obvious from the board below.
JP1 and JP2 are just solder pads for the four pins I didn't wire out to servo connectors. These can be connected to anything.
At the bottom left is a 5 pin header for the serial programming cable. This needs a Max232 chip between it and the computer.
S1 is a little push button switch to reset the PIC and send it back to the bootloader for programming, and R1 ties the MCLR pin high until the reset switch is pressed. C2 connects the serial cable to the MCLR pin so that the reset can be done in software just before programming.
The board was made with the hobbyist in mind. It is one sided, with thick traces and small holes. This makes it easier to get a good board when doing the iron on toner transfer method or other home pcb production methods. The holes will need to be drilled larger than the holes in the artwork, but you end up with fewer broken traces this way. The copper trace artwork can be found in the downloads section as a 600 dpi bitmap of a single board. The artwork and bitmap are designed for iron on transfer, so if you use a photosensitive process remember to turn it face down as if you were ironing it on. Additionally if you want to modify the board, here are the eagle files. Version 1.0 was created without the 5th pin for the serial cable and did not allow for software reset when programming. The current version (1.1)of the board adds the reset line to allow easier and faster programming, and rearranges the pins for compatibility with Jaluino.