www.megadrum.info

If I gently tap the crash cymbal I get crosstrigging on hihat channel. But not when I strike the cymbal, then it's normal.
This is what I get in midi-ox. First some gentle tapping on the crash and at the end 1 hard hit on the crash and a choke at the end.
55901 2 -- 153 26 4 10 D 1 Note On
55902 2 -- 153 49 4 10 C# 3 Note On
56126 2 -- 153 26 0 10 D 1 Note Off
56127 2 -- 153 49 0 10 C# 3 Note Off
56158 2 -- 153 26 4 10 D 1 Note On
56382 2 -- 153 26 0 10 D 1 Note Off
56853 2 -- 153 49 16 10 C# 3 Note On
56858 2 -- 153 26 11 10 D 1 Note On
57079 2 -- 153 49 0 10 C# 3 Note Off
57083 2 -- 153 26 0 10 D 1 Note Off
57942 2 -- 153 26 11 10 D 1 Note On
57957 2 -- 153 49 4 10 C# 3 Note On
58168 2 -- 153 26 0 10 D 1 Note Off
58181 2 -- 153 49 0 10 C# 3 Note Off
58544 2 -- 153 26 11 10 D 1 Note On
58769 2 -- 153 26 0 10 D 1 Note Off
59060 2 -- 153 49 12 10 C# 3 Note On
59074 2 -- 153 26 9 10 D 1 Note On
59285 2 -- 153 49 0 10 C# 3 Note Off
59297 2 -- 153 26 0 10 D 1 Note Off
59581 2 -- 153 49 9 10 C# 3 Note On
59595 2 -- 153 26 9 10 D 1 Note On
59805 2 -- 153 49 0 10 C# 3 Note Off
59818 2 -- 153 26 0 10 D 1 Note Off
60124 2 -- 153 26 9 10 D 1 Note On
60125 2 -- 153 49 11 10 C# 3 Note On
60348 2 -- 153 26 0 10 D 1 Note Off
60349 2 -- 153 49 0 10 C# 3 Note Off
60578 2 -- 153 49 19 10 C# 3 Note On
60610 2 -- 153 26 11 10 D 1 Note On
60804 2 -- 153 49 0 10 C# 3 Note Off
60834 2 -- 153 26 0 10 D 1 Note Off
61395 2 -- 153 49 104 10 C# 3 Note On
61631 2 -- 153 49 0 10 C# 3 Note Off
63345 2 -- 153 49 127 10 C# 3 Note On
63582 2 -- 153 49 0 10 C# 3 Note Off
72810 2 -- 169 49 127 10 C# 3 Key Aftertouch
72811 2 -- 169 49 127 10 C# 3 Key Aftertouch
73062 2 -- 169 49 0 10 C# 3 Key Aftertouch
73062 2 -- 169 49 0 10 C# 3 Key Aftertouch
I can't figure out why the hihat trigs on crash. It's not vibrations from the stand. I happens even when I hold the crash in my hand with no contact to anything else.

maybe some current flows to that channel inyour circuit. bad connection or something else..

Did some more testing and I found that it only occurs when the hihat pedal is fully open, and not when it's closed.
I don't think it's a bad connection. Maybe a bad pedal pot or pedal cable.

What MUXers do you have? Mine are 4051's and I cannot reproduce the issue but can guess where it comes from.
Can you add 100-470 Ohm resistor on the Pedal input? Does it fix the problem?

Also, I guess you don't see the issue after a strong hit because crosstalk suppression kicks in. I suspect if you disable crosstalk suppression on HiHat input (set it to 0) you'll get a signal after a strong hit as well.

dmitri wrote:Also, I guess you don't see the issue after a strong hit because crosstalk suppression kicks in. I suspect if you disable crosstalk suppression on HiHat input (set it to 0) you'll get a signal after a strong hit as well.

You were right about the crosstalk settings.
I mounted a resistor on the hihat pedal input (220R) but it didn't make any difference.
But......
I got rid of the problem by setting the Roland CY5 edge to switch.
I can't understand why it behaved like that. Weird to say the least....

Thanx Dmitri.

slayer666 wrote:

dmitri wrote:Also, I guess you don't see the issue after a strong hit because crosstalk suppression kicks in. I suspect if you disable crosstalk suppression on HiHat input (set it to 0) you'll get a signal after a strong hit as well.

You were right about the crosstalk settings.
I mounted a resistor on the hihat pedal input (220R) but it didn't make any difference.
But......
I got rid of the problem by setting the Roland CY5 edge to switch.
I can't understand why it behaved like that. Weird to say the least....

Thanx Dmitri.

What MUXers do you have? Can you try 1k resistor on the pedal input?

dmitri wrote:What MUXers do you have? Can you try 1k resistor on the pedal input?

I have both types of Muxes. It's the same problem with both of them.
I'll try a 1k resistor.

slayer666 wrote:

dmitri wrote:What MUXers do you have? Can you try 1k resistor on the pedal input?

I have both types of Muxes. It's the same problem with both of them.
I'll try a 1k resistor.

Did you try it?

dmitri wrote:

slayer666 wrote:

dmitri wrote:What MUXers do you have? Can you try 1k resistor on the pedal input?

I have both types of Muxes. It's the same problem with both of them.
I'll try a 1k resistor.

Did you try it?

No, I will try it as soon as I get the time to do it. I've been quite busy.

btw. I'm still having trouble finding the right settings for my pads. Too much double triggering. I've tried Admirs latest firmware on my Edrum ( also with dynamic threshold) and that works alot better for my pads.
I don't know which algoritm he used but he said something about mp3 compression inspired him. A strong hit masking a weak.

Can you make some experimental firmwares for me to try and see which one works best? I'm using Atmega644 now
Great work so far
\m/ slayer666