makes some very easy to use Microcontrollers. For this project, I used their Basic Stamp II
and their 418 MHz keychain tramsitter
and its matching receiver
On the schematic, the receiver is marked IC2, the Basic Stamp is marked IC3. IC1 is an LM7805 voltage regulator. BP1-3 are binding posts. P1-11 are sockets and plugs, where off-board components connect to the on-board components. S4 and S5 were going to be dipswitches, but ended up being jumpers. The idea is that if I steal the BS2 for some other project, I can close these two jumpers and connect two of the RF Receiver buttons directly to the relays.
The relays are S101N11 solid-state relays.
I built it on Perfboard, cut to fit a Radio Shack project box. I didn't have connectors or headers on-hand so I used some machine-pin sockets. They're in five groups. P2 is where the internal 9V battery plugs in, if I'm powering it from an internal 9V battery. P1+P3+P4 connects to the external power binding posts, the on-off switch, and the power-on LED. P5+P7+P10 and P6+P8+P11 connect to the switched binding posts, the indicator LEDs, and the momentary contact test switches. P9 is the Basic Stamp serial programming interface.