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Malchom
Joined: 02 Nov 2008 Posts: 156 Location: Montréal, Québec, CANADA
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Posted: Wed Dec 03, 2008 9:21 pm Post subject: |
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SixStringedBass wrote: | One thing that I noticed in your op is that if you want a range of 1-5, you actually want a potentiometer of 4x your R1 value due to the fact that amplification is defined as 1 + r2/r1. So having a 5x r1 value will give you a 6x range. |
You are absolutely right , I have fixed the post _________________
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BriGuy
Joined: 04 Mar 2006 Posts: 1894 Location: Boston
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Posted: Wed Dec 03, 2008 10:22 pm Post subject: |
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Malchom wrote: | Dunno if this is eligible for sticky? |
Great job on figuring this out and posting a great tutorial. I have included it in the Drum Modding 101 sticky thread which I am helping dcos15 maintain. _________________
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Malchom
Joined: 02 Nov 2008 Posts: 156 Location: Montréal, Québec, CANADA
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Posted: Thu Dec 04, 2008 12:08 am Post subject: |
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BriGuy wrote: | Great job on figuring this out and posting a great tutorial. I have included it in the Drum Modding 101 sticky thread which I am helping dcos15 maintain. |
Well thank you very much! I figured it's the best way to pay back the community after all the help i got from it _________________
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Malchom
Joined: 02 Nov 2008 Posts: 156 Location: Montréal, Québec, CANADA
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Posted: Fri Jan 30, 2009 4:54 am Post subject: |
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So I was gone on vacation for about a month, hence the lack of a full update
and the final result. I started another thread to show off the finished set, and added a picture to this thread to show what a finished circuit looks like hooked to my set.
http://rockband.scorehero.com/forum/viewtopic.php?p=314162
It's working very well, needed minor adjustments that could only be done through trial and error but it was all well worth it! _________________
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Adsee
Joined: 06 Nov 2008 Posts: 606 Location: Somewhere in NJ
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Posted: Mon Feb 16, 2009 7:15 am Post subject: |
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Would something like this work on a stock RB2 set? No mods at all? |
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Malchom
Joined: 02 Nov 2008 Posts: 156 Location: Montréal, Québec, CANADA
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Posted: Wed Feb 18, 2009 6:09 pm Post subject: |
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Adsee wrote: | Would something like this work on a stock RB2 set? No mods at all? |
I'm not sure... I have not tested this on RB2 sets
My guess is that the result will be the same. One main issue comes up in that case is that the RB2 set is velocity sensitive so the wiring must be different and even if you manage, you would have huge sensitivity adjustments to do...
I read that the RB2 set is very sensitive to hits in stock form since it is velocity sensitive. So this mod is not necessary for modding RB2 sets IMO.
An unmodded RB2 set with detection problem is probably something else than piezo signals... Perhaps your piezos or pads are broken/cracked...
In a nutshell, its at your own risks for RB2 sets... _________________
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nothing110
Joined: 06 Oct 2008 Posts: 9
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Posted: Fri Feb 20, 2009 1:14 pm Post subject: |
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Did you have any trouble getting this to work off the 5V usb? I used the LM324 instead and it works fine with a 9V battery but for whatever reason it won't work with the usb power. |
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Malchom
Joined: 02 Nov 2008 Posts: 156 Location: Montréal, Québec, CANADA
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Posted: Tue Mar 03, 2009 3:08 pm Post subject: |
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Mine is getting all it's power from the USB 5V
Make sure your ground is grounded and that the current is going in the right direction
A voltmeter is your friend too :P _________________
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nothing110
Joined: 06 Oct 2008 Posts: 9
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Posted: Tue Mar 03, 2009 3:17 pm Post subject: |
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I've pretty much given up on this for the time being. I put the circuit together and it was just didn't work how I wanted it to. I couldn't tell if it was a sensitivity issue or a design issue, but if I hit one pad all of them would trigger. I could blow on it and it would go off. I don't know if you came across anything like that.
So, for the time being I put my old heads with neoprene back on and will eventually get a RB2 set for the mesh heads. I'm just tired of screwing with it for now. |
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Malchom
Joined: 02 Nov 2008 Posts: 156 Location: Montréal, Québec, CANADA
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Posted: Tue Mar 03, 2009 3:25 pm Post subject: |
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Yah i have come accross that issue, you need to make sure your resistors a set accordingly.
I can set my heads so they detect anything, i have a huge gain range, going from 1 to 50 maximum. Now that it's done, it's overkill because most of my heads are set very near a gain of 1 :P
I had the issue when i had inversed my resistors and the circuit would just amp signal ridiculously high because the gain was all wrong. if you are sure your resitors are set correctly, and amp is ridiculous, try lowering the gain set very low as close to 1 as possible...
I understand frustration electric circuits can bring, I stopped on my circuit a while before starting to work on it again and a lot of testing came into play before actually making the final circuit. So many things can go wrong, faulty components, bad soldering joints, wrong placement, etc...
Getting a voltmeter (analog, with a needle is better) is extremely important so you can see how much amplification is applied and test without endangering your set, console and at the same time making it a lot faster to test than hitting the pads and see results on the game or computer.
EDIT : I forgot you cant go below 1 in gain... after 2 months i forgot all the theory already :P _________________
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Echarin
Joined: 21 Sep 2006 Posts: 19
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Posted: Sun May 24, 2009 4:15 pm Post subject: |
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The pictures accompanying the guide aren't showing. Any chance of them being uploaded again? |
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Malchom
Joined: 02 Nov 2008 Posts: 156 Location: Montréal, Québec, CANADA
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Posted: Mon May 25, 2009 1:21 am Post subject: |
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Hum, it seems I forgot to pay for my domain name renewal....
Fixing it ASAP _________________
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Malchom
Joined: 02 Nov 2008 Posts: 156 Location: Montréal, Québec, CANADA
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Posted: Mon May 25, 2009 1:36 am Post subject: |
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Fixed! _________________
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GRNDPNDR
Joined: 01 Mar 2012 Posts: 1
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Posted: Thu Mar 01, 2012 1:07 am Post subject: |
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Any chance you're still around and have these pics? I'd really like to see them so I can build this. I bought an LM358 and I have 2x10K resistors just to test it with but I can't seem to get it to work and i'm using a 12V input for now.
I can even host the pics if need be |
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lenr
Joined: 16 Oct 2012 Posts: 1
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Posted: Tue Oct 16, 2012 3:53 pm Post subject: anyone have the original circuit diagram? |
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Hi, i have triggers which are too soft, anyone perhaps have a copy of the schematics mentioned in the original post, i just a simple amplifier (pre-amp) to boost the output from the triggers.
Or if you have built something similar, please let me know.
Thanks |
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