Problem

[Stipe]

Hello everybody. I built megadrum from syntex kit version 2.08 all in one. For the first time,that I connected megadrum thrue usb everything was working great. Next time i connected MG the lcd screen was blank. When I push the left button it says: Fw updater 16Mhz
DOWN-ok.UP-clock
I am using 16Mhz cristal. When i press down button it says:Send SysEx now
From now on everything i press dont work-nothing happens. What to do? Did megadrum automatically found new firmware?
Do i need isp cable now? Please help.

Regards,Stipe

[dmitri]

You either have the LEFT button stuck so MegaDrum enters the bootloader every time you power it up or you've accidentally erased MegaDrum firmware and you need to re-load it using MCT (MegaDrum Config Tool).
Read http://www.megadrum.info/configtool and viewtopic.php?f=3&t=111

[Stipe]

dmitri thank you very much!
Looks like I accidentaly erased firmware. So i uploaded it again using MCT, and it works like a charm again.
Thanks for the help.
P.S. For the LCD-can something go wrong if for R lcd i am using 220 ohm instead of 470 ohm for the BLACK-BLUE LCD?
Thanks again.

[dmitri]

dmitri thank you very much!
Looks like I accidentaly erased firmware. So i uploaded it again using MCT, and it works like a charm again.

Good.

Thanks for the help.
P.S. For the LCD-can something go wrong if for R lcd i am using 220 ohm instead of 470 ohm for the BLACK-BLUE LCD?
Thanks again.

I don't think there will be any harm.

[Synthex]

For the LCD-can something go wrong if for R lcd i am using 220 ohm instead of 470 ohm for the BLACK-BLUE LCD?
Thanks again.

You can use a 220 ohm.
The screen will be brighter.

[ole_hansen]

i'm using the 47ohm ("should" be 470ohm) for my R-lcd and it's just very bright. nothing to worry about.
without a resistor (just a straight wire) it's just a tad brighter.