PCB DESIGN - All In One v2.5 - 32 inputs with 74HC4851

[dmitri]

As you were told already, there is no point to program unencrypted bootloader.

[Lukashenka741]

there is a point. to get Megadrum working quickly

[dmitri]

No, there is no point and, in fact, will give you more problems. As I and others said many times, there won't be unencrypted MegaDrum firmware updates so programming unencrypted bootloader is useless at least.

[Lukashenka741]

I can't just throw away this atmega. I just want to get MD working till new year party. then, I'll find another project to place this Atmega, and buy another from you
-about programming: I still get nothing on lcd. Nor normal firmware, nor bootloader (I press LEFT key when powering up)...
maybe it's with the fuses. I did exactly like before but still...

[dmitri]

Forget about bootloader. And I already gave you the link to troubleshooting LCD issues.

[Lukashenka741]

my LCD is fine. it's all about firmware writing

[dmitri]

my LCD is fine. it's all about firmware writing

Did you even read the link which is in the FAQ and I also pointed you to? Issues with LCD are visible signs of internal boards problems.

[Lukashenka741]

Yes I've read it. as I said, It was working for a moment; when I reconnected it to USB it was gone.

[Lukashenka741]

hmmm... I made too mach playing with it. I think I now locked the fuses... atmega is totaly frozen. ponyprog says: "device missing or unknown device"

[dmitri]

http://www.megadrum.info/forums/viewtop ... p=278#p278
Good luck!