DIY Internal Optical High Hat Controller - Segment 2

This is an Internally mounted Optical High Hat Controller for electronic drums. This controller is an adaptation of dmitri's circuit from the Megadrum website. His circuit is a variation of admir's original circuit. I have mounted dmitri's circuit design onto an easy to build, nested set of tubes that can be placed inside the hi-hat assembly. This allows for very realistic (like an acoustic) control of the hi-hat input to your Megadrum module. This circuit may work for other e-drum modules, depending on system requirements.
See DIY photos here:
s814.photobucke...
and also here:
www.vdrums.com/...

[@joeskarulis]

Brilliant! I am working on a passive design using a different type of variable resistor for Roland and Alesis modules

[@racer52online]

@ProfesorLeoB - One side of the circuit is simply a light source. The other side is a component that responds to the light. The light beam is progressivly blocked, more and more, by the triangular blade as the blade moves downward between the transmitter and the receiver. The fact that it is a metal blade is more or less coincidental. It was the easiet material I had on hand to make a small, thin, ridgid light block.

[@billbradleymusic]

Very cool explanation 👌 glad I saw it.

[@racer52online]

@racer52online ... If you have not yet, also see my 'Segment 1' that shows the hard parts concept and construction - before electronics are mounted.

[@racer52online]

@racer52online Note that ALL the audio in the sound demo is from the TD-20 directly controlled by the simple FSR. Also see the video titled "DiY FSR - The Movie.wmv" it shows the TD-20 front panel while operating the FSR controller A single zone w/ choke, piezo triggered cymbal is used as the HH trigger The FSR is a simple variable resistance device that is 'pressure', or force sensitive. Using a light spring allows conversion of foot motion to force against the FSR.

[@HotRodCVO]

racer52online has

[@LeoBercoff]

Good work! Just I don't clearly understand if you cut beam light (partially) between emitter and receiver or you use the moving flange as a reflective surfice (to reflect variably, partially). Thanks.

[@mawitonik]

great job man, thanks a lot for the videos, I did some testing with my td3, and i'll try to adapt this method too. congrats

[@racer52online]

I am not sure on this. I believe that The Alesis trigger I/O uses a two or three position switch controlled input to select the HH position. Open/partial/closed. If that is true, then this would not work

[@stratocaster539]

Excellent work and video! Would this idea work with the Alesis trigger i/o?

[@joeskarulis]

what is the brand and model number of the oscilloscope ?

[@LeoBercoff]

Great! Thanks for your clear answer. I'll try that soon. Regards.

[@racer52online]

@mazzhanif1 .. I am not sure that this device will work with the Alessis i/o Trigger. However, I do not have any expierence with the Alessis Trigger I/O. This device was designed by the people at 'Megadrum' to work with thier trigger i/o product called Meggadrum. It may, or may not work with other products. This device puts out a variable voltage as a control signal for the Hi Hat. It gets its power from the megadrum i/o. You will need to do some more research on how yours works.

[@matafilms]

i wonder if ATV was inspired by this idea?

[@13ermack]

LoL and I thinking that would be impossible when suddenly bang ! a great idea with almost zero cost congratulations friend

[@Captain-Mayday]

@racer52online Hi, have you made one for the TD20 already? My VH-12 is a little conky and I intend to swap it with an Alesis Surge 12" hi-hat but I would need a variable resistor pedal and I do not want to get a FD8. Any help would be good, thanks!

[@racer52online]

about $100.00 USD, w/ free shipping to continental US (upper 48 states) I'll need the dimension of the free space inside your hats. ie; the distance from the bottom hat ..up to the bottom of your clutch parts that extend under the top cymbal. also, as a check, did you read all my comments? this is not for a Roland module, this provides a varying 0- 5 volt control signal, not a varying resistance, and is a working example of Dmitri's design for Megadrum

[@josephnobleza6120]

can you give me diagram of the controller.,thamk you.,nice work and videos

[@DanielMcBrain]

Holy crap, i need this for the alesis trigger i/o!

[@NEELWELLVIDEO1]

LOVE YOU VIDEO'S KEEP UP THE GOOD WORK

[@racer52online]

@joeskarulis I have a Roland and would like to see what you have on the plate.. I still have not made a DIY controller for my TD20. You can send me a message if you do not want to post here.

[@MIDNIGHTRIDER1068]

Hi, ,,first thank you for this input. i know you have a life and cant always answer, but when you can , could you please send more info on this i would like to build this, is there anyway you could send me the parts list. with the right values of everything . i think i got everything right from the megadrum site but i want to be sure. i mean its only a few parts simple but just want to be sure i get the volts and ohms right...thanks Dan

[@mattbrownsounds]

How much to build one of these for me?

[@racer52online]

@b3nnj1 This Opto-controller will Not work with the TD-20. The TD-20 requires a variable 'resistance' to control the HiHat. Please see my video on the FSR. The FSR will work with the Roland TD-20. I posted a video of the HiHat audio as direct from the TD-20 and controlled by the FSR in the pictures. see my video "DiY FSR Hi Hat Controller Sound Demo.wmv" also, follow the links to see build postings on the vdrums forum

[@jeremiahstewart3378]

I don’t get it