Origa.me

Hot on the heels of my ICSP programmer, here's my simple development board for the 16F628. It's based on Nigel's PIC tutorial but I've used right-angle headers to allow it to be plugged into a breadboard . I've also added an ICSP socket, reset switch and switchable MCLR functionality (via JP1) which allows MCLR to be either tied high with the reset switch enabled, or used as an input.

Oh dear, it seems my parallel port LVP programmer was somewhat fragile - I'll skip the details but suffice to say it doesn't work any more. The silver lining to this sad story is that it led me to build a really simple and cheap ICSP (In Circuit Serial Programmer) which connects to the serial port and only uses 3 resistors.