megadrum midi not working

[dmitri]

Variable controllers come in two types of polarity:
1. Roland polarity: signal on the tip, power on the ring.
2. Yamaha polarity: signal on the ring, power on the tip.

You have to make sure to wire HiHat controller jack according to polarity of your HiHat pedal. I don't know polarity of your controller, you have to find it out.

[Badmongo88]

ok thank you very much.
It's for roland and i have wired it for roland.

[Badmongo88]

midi is still not working.

tried with the hi-hat controller on both inputs ( when using the high input i set it to altin) using a trs jack that i know works as i tested it with a multimeter.
tried with a piezo that i know works(tested with multimeter and was registering when i was tapping it). still not registering midi in on the computer. the red light or the vu meter in MD isn't showing any activity either.


I tested every single jack input against the pins on the board and it's all connected, to the right pins. everything is grounded. i was very thorough.

any body have any suggestions?

[dmitri]

Do http://www.megadrum.info/forums/viewtop ... 330#p32330 again and post the results.

[Badmongo88]

ok will try it again, but what am i hoping to achieve by doing this ?

thank you

[dmitri]

It already showed you the first time the the main board is fine - even very weak signals through your body produce triggering and MIDI signal.

[Badmongo88]

only for half the inputs yeah that is correct. but how is this helping me figure out what my problem is`?, if i have checked every single input jack by touching the top of the jack input and checking it on the board using a multimeter to check for continuity make sure it's connected to the correct pin and also made sure the grounding is unbroken and conected at the right place.

i was hoping for some kind of help. guess i'll i have to take it to an electrical engineer to help me figure out what's wrong

[ignotus]

If touching the pins produces a signal (half of them don't because they're probably disabled by default) then the problem is either the piezo or the wiring. Post pictures/diagram showing exactly how you've wired the piezo.

[Badmongo88]

will do that later, i did a little testing without a jack plugged in the there is continuity in the grounding. but when plugging a jack it all of a sudden there is no continuity or there is but not on the pins on the board. so what is creating the short? any ideas?

[airflamesred]

People are more than happy to help but as I'm sure you'll apreciate, it is very difficult to offer advice on something, neither I, nor anyone else, can see.