Random trigger

[talrusher]

last time i have really massive random Trigger

at night everything works fine but at day getting random Trigger from every pad.

have build a metal plate in the megadrum module and soldered it to usb shield. now ist a bit better but get random Trigger anyway.

what can i do?

sry for bad english

[dmitri]

When you say random triggering is it:
1. Double triggering?
2. False crosstalk triggering?
3. Something triggering when you don't hit anything?
4. What has changed between viewtopic.php?p=20865#p20865 and now?

[talrusher]

dont hit anything but md is triggering. at night everything seems to be ok. no triggering anyway. but at day, especially from 8am till 12am its horrible.

[dmitri]

It suggests to me that something nearby which works only during day time gives a lot of electromagnetic interference.

[talrusher]

yeah, maybe the two mobile antennas on the roof ^^

any idea how to solve it?

[G-Man]

Maybe some kind of shielding like copper sheet like used in guitar cavities?

[talrusher]

to shield the megadrum ist not so easy as i thought!! shielding something is whole sience! not only put a plate inside and soldering it to ground... thats more difficult...

...for now, have managed it so, that with an uneven nr. nothing kicks out. theres nothing to see... but if i let md Manager a couple of minutes on to see the midi log from time to time md Triggers some pad and even with max hits !! whats that? why?

[dmitri]

I think shielding MegaDrum module itself won't help. The pads/cymbals themselves serve as antennas for electromagnetic noise. You can test this theory by disconnecting all pads/cymbals from the module and watching for false triggering.

[talrusher]

your right, but the cables are shielded, so i have soldered the whole pad - line inside md to ground with very good result. maybe the + line from the usb cable works as a antenna in my case. have to look for a solution. write back if made something that works.

edit:

i remember that the Alesis Trigger io had the same Problem, but only if the usb cable was pluged in.