Jidis Posted August 27, 2005 Report Share Posted August 27, 2005 Hi,I etched a JDM board and had everything but the 8.7(or 8.2) zener diode on hand. I found a 9.2 and a 7.something, but nothing in the eights. Is it safe to go up or down a value, and if so, which one?If not, I've been using a Willem. I just want one for home. :)-Thanks! Quote Link to comment Share on other sites More sharing options...
moogah Posted August 28, 2005 Report Share Posted August 28, 2005 I'm not an expert, but I've read most everything here about the JDM. Some users couldn't get theirs to work untill they used a 9.1v Zener. I'd hook it up and check your voltages, thats all that really matters anyway. Quote Link to comment Share on other sites More sharing options...
Jidis Posted August 28, 2005 Author Report Share Posted August 28, 2005 Moogah,Thanks! - That's weird, that is almost what I put on there. I blew an 18f452 with the bootloader and MIOS1.8, as well as erasing it, reading it and verifying it successfully. I did everything except use the chip in a MIDIBox ;DIt looks fine, but I didn't get the 13.7v in the MCLR test at pin 1. It was something in the high 12 range (maybe 12.9v) and that "delay" fader was at minimum. The Vss/Vdd test was a fraction lower than 5v as well. I'm not sure what the tolerance is on this stuff, but I do have a backup programmer.-GeorgePS- I think 9 pin "straight-through" cables with most of the lines connected need to be on the endangered species list. Quote Link to comment Share on other sites More sharing options...
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