Please Help me finishing my Megadrum

[madmax]

Hi,

I ordered the All in One PCB 56i v3.1 Kit 2-3 years ago, and now want to finally finish it.
I assembled everything and can connect it to the MegaDrum Manager.



As it can be seen my firmaware is quite old, so I thought about updating it first.
I downloaded 20120911 and wanted to update it using MegaDrum Manager as described.
I power up the Megadrum holding the LEFT button, set the speed to 16 MHz and press DOWN.
Then it sais "Fw Updater 16MHz Send SysEx now"
According to the MegaDrum Manager it should read "StartUpdateOnPC"
MegaDrum manager then reports that the MegaDrum is not responding.
Midi Settings should be fine (Megadrum USB MIDI).
Any ideas whats going on? How can I update it?



For me it seems that MegaDrum Manager is only able to get the firmware, everything else fails without an
error message.
If i set "Big VU meter" to yes and send it to the Megadrum nothing happens. But this could also be caused by my
old firmware.

Another issue I have is that the LCD shows 7 inputs always active on the same level.
Is this caused by wrong settings and/or firmware? If I connect a Roland vDrum to another input and play on it it
correctly shows the bar moving.





Anny suggestions to help me finish this project are welcome.

Regards,

madmax

[airflamesred]

I had trouble also on the first time I tried to update and can't remember how it all came together - but it did eventually. With regards to the LCD, I found turning up threshold and gain sorted that. Sorry I can't be of much help.

[Maylord.war]

If you have a protect boodloader Atmega use MegadrumFirmware update


See here viewtopic.php?f=3&t=1252

[dmitri]

As it can be seen my firmaware is quite old, so I thought about updating it first.
I downloaded 20120911 and wanted to update it using MegaDrum Manager as described.

In the topic where you downloaded it there is a warning in bold red right after download links. You should have read the warning.

Another issue I have is that the LCD shows 7 inputs always active on the same level.
Is this caused by wrong settings and/or firmware?

You have a problem on the board - breaks/shorts/bad soldering or a mixture of these.

[madmax]

Thanks for your reply dmitri,

I read the warning, but since I was away from this forum/site for a few years I did not notice the issue with
unencrypted/encrypted bootloader. I will PM you to for requesting a new chip.
If I have read all correctly afterwards I can follow the standard update procedure using MegaDrum manager?

In the meantime I will check my soldering.

regards,
madmax

Edit:
I am currently checking my soldering. Just to be sure: my foto from the previous post shows active hi hat pedal (top left), kick (bottom left)?
But what are the other active channels? I cannot find a documentation about it. Could anyone help me here. Knowing which inputs the bars represent helps me finding
the errors.
Do all active inputs belong to the same 74HC4851 multiplexer? it might be that one of these is faulty...

Edit 2: Found the problem. My soldering was ok, but I did not put the jumpers for pedal impedance and polarity.
Just in case someone else makes the same mistake.