I have been looking at all PIC programmer circuits I could lay my eyes on (I tried but I couldn't send the collection of circuits) You might understand, for a first timer this is all too unfamiliar terrain... I need only the 5 in circuit programing wires to be created with those transistors and diodes that I have seen in essentially the JDM, the PIPO programmers and RCD which does it without any transistors Where I found about 5 differently drawn but identical (as far as I can tell from putting them side by side for a few minutes) JDM versions, the PIPO (one transistor) and the RCD which has a Status LED which I like... Frankly I only partially understand how these circuits work, some circuits seem to be intentionally obfuscated... What should I know about building one to program the 18LF4320 involved in my solar tracker design? I would like it especially if there was a circuit that could be easily converted to also do serial communication with the chip later! Thanks for any pointers! -- Tobias Gogolin cel. (646) 124 32 82 skype: moontogo messenger: usertogo@hotmail.com You develop an open source motor controller at http://groups.yahoo.com/group/GoBox -- Tobias Gogolin cel. (646) 124 32 82 skype: moontogo messenger: usertogo@hotmail.com You develop an open source motor controller at http://groups.yahoo.com/group/GoBox -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist