Please login or register. Did you miss your activation email? This topic This board Entire forum Google Bing. Print Search. Pages: [ 1 ] Go Down. Posts: Looks a lot like a JDM programmer. Maybe the first version of it anyway I do have 12v coming from my power supply.
Sounds like I managed to burn something out! Also, no more buzz sound on the 25v step. PS — Everything appears to be in the right place. No bad solder joints. Maybe a bad MC? I have built this programmer thanks for sharing you design by the way and am thinking it should be able to support these eproms too. Is it possible to add support for the ?
I was looking at this recently. Still would need some adjustments to the software, or have a jumper tie A10 to gnd or vcc and program both halves separately. Software changes not an issue, having an adapter would be a bit of a pain. Interestingly the can be supported with a software change. If the can be done with only software, that would be great. Hoping you can add this feature and maybe even the with adapter board. I may be wrong about that.
Can you give me some part numbers? Update on my issues above. It turned out the MC was failed. I replaced it and now my voltages are correct.
The resulting bin file is all 0s which I think means blank. The hardware tests all pass with the correct voltages and the read test with resistors works correctly for all the inputs. I figured I have nothing to lose with trying to program this , so I just turned off the blank check option and tried programming it anyway.
It made a few passes and U1 exploded in a puff of smoke and sparks! Below is a pic of the U1 aftermath…. I have U1 socketed and was able to replace it quickly. I will try with a different and see if that helps. U1 explosion! But if Verify is called individually after burning, it is correct.
Can you insert a pause before the automatic verify in the software? I see this if I write a. This leads to a different checksum when comparing the chip contents to the original bin. If I view the original file in a hex editor, there are just 2 lines of code. Fixed it. Namely and I ended up making a circuit that looks a lot like your VPP drivers. Alas, not much repeatable success with the And a mod of your programmer for There are quite a few different approaches out there.
The idea was a circuit which charges the gate as quickly as possible, without exceeding Vgs max. A simple divider circuit does the job just fine. Back in the heyday of these chips, engineers spent a lot of time fretting about this stuff because FETs were rare exotica and the performance of available PNP transistors was quite poor.
These days just about anything will work. Maybe a bit late, but I think this is what you are looking for. Please help programmer what upload on windows fimware to arduino for programer file for upload and software for upload? Thanks usb version Get send to email? I could not succeed to burn the bootloader on my Win10 either.
Had to pull put an old Mac which worked without problem. My Preferences. Change E-mail Address. Change Password. Our quality and reliability set us apart and are significant reasons why we ship over one billion serial EEPROMs each year.
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