www.megadrum.info

Hi,

recently I build a Megadrum by myself (with an ATmega32 and PIC18f2550) with the schematics of the website.
I wanted to try it before buying the MCU with the protected bootloader. So I'm running the 20100516 version.
"All" works OK, I can see the LCD screen, the MIDI ports on my computer... but I can' t get any MIDI signal.
I already saw the FAQ related with this problem and I tested all capacitors, resistor, etc, etc.
I connected an Arduino to the TX, RX pins of the MCU and I can get some symbols when I hit the Pads.
Could please someone help me??

Most likely reasons:
1. Incorrect crystal frequencies.
2. Incorrect fuses programmed into Atmega.

I paid attention to the crystal frequencies and the .hex file and they are right.
What do you want to mean with the fuses? what should I do with that?

How can I set the correct fuse bytes for Megadrum? I thought all should I do was flashing the ATmega with the .hex file

Here you go:


It's been a long time and I don't remember where you open this window in AVRdude or whatever you use, but how you set these is important.

That was the trick!! The fuse bits were not good set. Now everything works like a charm.
Thank you dimitri and ignotus, you make my day!