Use of the schematics and artwork is free for non commercial use. A double sidedĬommercial quality PCB in Protel format is planned to enable small batches to be professionally Pad sizes are large and track sizes are wide to enable home etching processes to be used more successfully. The single sided artwork was designed with the home constructor in mind. A 40 Pin Aries ZIF socket or cheap standard IC sockets can be used. Regulator for VPP is adjustable to trim out losses across the circuit and obtain the correct voltage at the PIC pins. In Circuit Programming (ICP) header is included, Q6 performs a PIC reset pulse just as VPP is switched to the target PIC to ensure the oscillator is stopped. It is a Schmitt trigger type which has very clean switching performance. The 74HC14 buffer is used because of better availability in some countries ( idea from Gary Aylward's programmer ). This circuit is an alternative to the many parallel port PIC programmers that use the 7407 or 7405 type buffers. My original on the left and one built by another PIC enthusiast on the right, with the ZIF socket. OziPic'er also works with IC-PROG software, use the "Propic2" type setting, all line 'inverted' except VCC. (for WinPicProg software by Nigel Goodwin).
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