Keith Raper to plug bass pedal to rockband?

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Keith Raper to plug bass pedal to rockband?

Postby gui_999 » Fri Apr 24, 2009 3:12 pm

Since I'm building my own e-drum kit, I was thinking why not making it so I can plug it in rockband.


For the pads, since it looks like the Xbox controler use piezos, I was thinking that I could just "replace" them with my DIY pads by installing 1/4 sockets in the Xbox controler and spliting the piezos wire so it would "bypass" the one from the controler. For what I know.. I think this should work.


The problem comes from the bass pedal. It looks like it use a magnetic switch (reed switch) and not a piezo. So I was thinking about this.. basically, the switch just open or close the signal (depending of the kind of reed switch, normally open or close).. So I could use any kind of switch that open or close the circuit..

(here picture of someone plugging a reed switch to a real bass pedal: http://www.flickr.com/photos/waldo15a/s ... 347064464/ )


So the question would be.. with the keith raper circuit, it basically mod the piezo to act like a switch? If so.. so you think it could be use to replace the magnetic switch? Because if it can be done, I could just put a KRC in my bass drum pas and put a on/on switch on my pad to "engage" the KRC. This way I could use it with both the megadrum and rockband.


Thanks for your advices on that!
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Re: Keith Raper to plug bass pedal to rockband?

Postby jman 31 » Fri Apr 24, 2009 8:24 pm

I have done extensive testing on using a simple transistor (raper circuit) as a switch. I works, but the output from a piezo is a very quick pulse. This does not work well with xbox controllers. You really need to use a timer circuit (i.e. 555 timer IC) so that you can control the length of the pulse. Take a look at this THREAD on my website. I go into the circuit required to make a good switch from a piezo. You may have to register to view the photos.

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