www.megadrum.info

Sorry if this has been covered but i have gone thru the forums for a couple days looking...

First off i am using dmitri's build

first problem is that the led does not light up with or without the atmega plugged in

2nd when i plug the usb in it recognizes it on all my pc's and installs properly but then it acts as though i have unplugged it. a few seconds later its back in the device mgr then gone again. The crystal is 12.000 mhz and have already replaced it once. I have double checked for shorts and all resistors check out good. half the caps are also and will finish checking them out if needed. i checked out the top half of the board by the pic. any help would be great.

Edit: another interesting thing is when i plug the ICSP cable in, the board becomes stable.

update: tested all but inductor on board rechecked welds all good still no led light and usb restarting on its own.

Try this first: viewtopic.php?f=3&t=268

That did it thanks alot i have a solid "USB AUDIO DEVICE" and "USB COMPOSITE DEVICE" now.

now i haven't hooked up the analouge board yet but still have a couple issues.

first, led does not light up have replaced it and tested it and it does work.

2nd while my lcd does light up but i see no words on it. this is the shortcut to the paper on the lcd screen. http://www.newhavendisplay.com/specs/NH ... -FBW-L.pdf

any more help would be great

Did you read about LCD in MegaDrum FAQ?

well not sure that i figured it out, but its fixed. first program was with avrdude, just reprogramed it with ponyprog and it works great. just need to figure out why that darned led isnt working now thanks alot for your help