----- Original Message ----- From: "Lyle Koehler, K0LR" > the parallel-port > control interface is on an 8-pin header that gets plugged into the > socket in place of the 12F683. In addition to the header, the only > components required are two FETs and a DB25 connector.
I have made several of these interfaces using NPN transistors. Any small ones seem to work, they just need something like 4K7 to limit base current. 73 Alan G4ZFQ
