Hi,

I'm looking to build a simple board. The board will have a serial RS232
interface that I'll connect to a PC. The board will have a PIC (or perhaps
an alternative cheap low pin count cpu+mem?) which will then drive a bunch
of solid state relays. I'm hoping to put optocouplers on the serial txd/rxd
in order to prevent any unexpected behavior on the board from damaging the
PC. I'm also hoping to power the PIC using the 5V coming from the D-9 RS232
connector.

Before I try to do this myself, has anyone done something similar. If so,
I'd love to get your feedback/sample sketches/schematics/diagrams/etc on
attempting to achieve the above.

I'm going to be buying all the equipment needed to do this from scratch. All
I have right now are 3 pieces of copper plated board, soldering iron, ferric
etching powder, marker pen and other basic stuff. So any advice on where to
procure relevant parts around Santa Clara, CA would be a great help. I guess
I'll probably need to buy a PIC programmer as well. I welcome any
feedback/suggestions/advice.

Thanks,
Hirose

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