Reversed Pedal output and strange ghost notes

[The3D]

Hi all,

i bought a new megadrum directly from dmitri few days ago and i'm still configuring it. I actually have 2 problems:

1) I built a magnetic based hh controller (HES based) and it works flawlessy, except for one thing: The CC output is reversed! I mean, as far as i know megadrum VU meter reports a full bar when hi hat is fully opened, and a empty bar when fully closed (i saw this behaviour in some videos about hi hat controllers with megadrum). For me is the opposite! Empty bar (so hi hat fully closed) with pedal released, full bar with pedal pressed. This is pretty annoying since Superior 2 doesn't like too much reversed cc values. Is there any configuration option to reverse cc values? (please notice that Reverse input does not work).

2) I randomly get strange ghost notes while playing. These ghost notes triggers always at max velocity and nearly always with the pad i'm hitting (i mean if a ghost note triggers, it triggers a snare drum hit if i'm playing the snare, a crash hit if i'm playing the crash etc). It seems impossible for me to remove this using threshold or Xtalk parameters. Any advice?

thanks a lot

Emilio

[Firelord]

I built a magnetic based hh controller (HES based)

Can you provide the schematic?

I randomly get strange ghost notes while playing.

I can think of two reasons, but I need to know more about your kit, i.e. is it DIY? Do these notes trigger randomly on some/all channels with connected pads or do you mean that the velocity response is not consistent?

[The3D]

Hi,

thanks for the answer and sorry for the unclear informations. Here are the details for the pedal:

Hall-Effect Sensor A1302EUA-T

VCC (Power source) = Tip
Vout (output of the circuit) = Ring
GND (ground) = Sleeve

I built it almost the same way as wazza187 did (as explained in other posts about HES based controllers). I tried anyway to reverse tip and ring, but it doesnt work (the pedal becomes unresponsive).

For the pads: yes my pads are DIY, but i don't think that is a pad related issue, since i have used them before with an alesis trigger IO without any problem. Plus the cymbals are not DIY (i have 3 pintech PC Series, alesis surge hat and alesis ride).

Do these notes trigger randomly on some/all channels with connected pads or do you mean that the velocity response is not consistent?

The first one. It's not a problem about velocity, these notes should NOT be triggered.

[Firelord]

VCC (Power source) = Tip
Vout (output of the circuit) = Ring
GND (ground) = Sleeve

In MegaDrum, Tip is the signal input and Ring is VCC. So you should reverse these and then experiment with different settings.

The first one. It's not a problem about velocity, these notes should NOT be triggered.

Try this experiment: leave the pads connected and observe MegaDrum while say turning the lights in your room on/off. Do you see randomly triggered notes?

[The3D]

In MegaDrum, Tip is the signal input and Ring is VCC. So you should reverse these and then experiment with different settings.

so i should reverse tip and ring and tune the module...as i said i tried reversing tip and ring but the pedal seemed to be unresponsive...anyway i wonder how wazza187's controller works, since i followed his wiring

Try this experiment: leave the pads connected and observe MegaDrum while say turning the lights in your room on/off. Do you see randomly triggered notes?

yes sometimes happens.


Thanks

[Firelord]

as i said i tried reversing tip and ring but the pedal seemed to be unresponsive...anyway i wonder how wazza187's controller works, since i followed his wiring

Maybe you should talk to wazza187 personally and ask him about this. He should be able to help. I did not work with Hall effect sensors all that much.

yes sometimes happens.

We've discussed this particular issue in this thread, unfortunately the its cause remains undetermined, whether it's EMI or any other type of electrical interference. Turning devices with a high power rating on/off is known to cause this behaviour. No effective solution to the problem has been found so far.

[dmitri]

If the pedal's signal is reversed then you can set LvlsRevers to Yes in the Pedal settings to accommodate such a pedal. See http://www.megadrum.info/content/hihat-pedal-settings

[The3D]

thanks for the answer dmitri, how was your trip in italy?

anyway, i solved the problem (it was related to the magnet polarity, i didn't figure out because with my design i was unable to turn it, anyway i solved using PedalReverse option and then tuning high and low levels). But the ghost note problem really bothers me. Unfortunately it seems to go from bad to worse. I am unable to record even a single song because i would record for sure ghost hits. After reading the firelord post about this problem i did some tests. I noticed that some of my home appliances causes the MD to lose USB connection (if i turn on/off my electric oven for example there is an high chance that my MD loses USB connection, in this case the solution is turn off/on the module and restart cubase). But the ghost notes problem don't seems to be related to interferences at all. I did this test: i shut down all the lights and my home appliances, even my mobile phone, but the problem still persists.

So there are 2 options:

1) My neighbors turn on/off their lights/appliances all day long (solution: kill em )
2) There is something wrong with the module i can't figure out.

Any advice?

thanks

[dmitri]

thanks for the answer dmitri, how was your trip in italy?

It was great!

So there are 2 options:

1) My neighbors turn on/off their lights/appliances all day long (solution: kill em )
2) There is something wrong with the module i can't figure out.

Any advice?

What firmware version do you use?

[The3D]

Firmware version is 20100212, is newer than the latest posted on the site (MCT stated that i'm dmitri, wtf?:D)