You should look at the schematics and other documentation for the existing carrier boards like the Super Carrier Board and the Board of Education. This is all available from Parallax. On their main webpage, go to "Downloads", then to "Basic Stamp Documentation".
A carrier board usually provides:
1) A programming connection
2) Possibly a voltage regulator since the one on the BS2 is limited in capacity
3) Physical and electrical mounting and connections
4) Possibly a reset pushbutton
You don't need #1 for your project and you may or may not need #2. Use an existing carrier board as a model for the rest.
Comments
A carrier board usually provides:
1) A programming connection
2) Possibly a voltage regulator since the one on the BS2 is limited in capacity
3) Physical and electrical mounting and connections
4) Possibly a reset pushbutton
You don't need #1 for your project and you may or may not need #2. Use an existing carrier board as a model for the rest.
The setup I am using works great, from RF to RFID functions ...
If what Mike said is true, can you use one board (BOE for example) to control several BS2s? In my case.. 3?
Excluding programming of course.