Hi. It's been a long thread, but I can't resist... :-) Chen Xiao Fan wrote : [snipped long part about COM- vs. USB-port...] > Still it is an interesting question to use USB or serial port. Not realy. I've used my Wisp628 (a "serial" programmer) using the USB port only for a long time... Any well built serial programmer should be able to use any of the cheap USB->RS232 converters out there. A non-issue... > 3) I think EasyProg gives you the option to just buy the PCB. > However I think most people would like to have all the parts > available as a kit. Well, as has been mentioned in other treads, maybe the major "problem" with the EasyProg is that Olin selected to use rather odd resistor values (from a hobbyists view, not for the pro !). So a kit (with *at least* the resistors) is, IMHO, the only way to to get more then just a few of them sold. Again, IMHO... > 4) I think the better flexible PIC programmers will have a > PIC inside. Of course ! The time of the directly DOS-controlled, PC-software- timed programmers is gone. > And I think the ZIF may belong to the "hard > to find part" and it is said to be quite expensive. Maybe > that is because I seldom use DIP parts. With regard to the EasyProg, you could just as well build it without the ZIP and use the ISCP connector instead. After all, most/many hobbyist project lives on a breadboard where the software and hardware often are developed together at the sma time. > 5) I always think a pre-assembled version is more appropriate but > I am not a hobbyist so I may underestimate the pleasure of > actually building a programmer. IMHO, the programmer is just a tool, just as the hammer and saw are just tools when doing construction work on my house. > By the way, what is the exact meaning of being an 'hobbyist'? Non-profit ? But then, what is "profit" ? Done of spare time ?, what is "spare time" ? Bets Regards, Jan-Erik. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist