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  #1  
Old 03-17-2013, 06:03 PM
Frivolous Frivolous is offline
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Default Control For Moded 808 Bassdrum

Hi people!

I'm building a modded 808 bass drum like this.

For this project I would like to be able to record trigger and knob movements and have Ableton play it back or dial up a new kick preset via midi cc messages.

Can anybody help suggest a product or combination of products to encode and decode note on/off and cc messages for at least 5 knobs?

I also decided to go further and add 2 separate trigger buttons. One sending a fixed velocity around 100, and another with a variable velocity knob so you can do precise ghost and accent kicks on the fly. (So velocity is a must for ins and outs).

Thanks!!

Last edited by Frivolous; 03-17-2013 at 06:16 PM.
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  #2  
Old 03-18-2013, 08:53 PM
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John John is offline
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Quote:
Originally Posted by Frivolous View Post
Hi people!

I'm building a modded 808 bass drum like this.

For this project I would like to be able to record trigger and knob movements and have Ableton play it back or dial up a new kick preset via midi cc messages.

Can anybody help suggest a product or combination of products to encode and decode note on/off and cc messages for at least 5 knobs?
Hi Frivolous, welcome to the forum.

If you need 5V logic outputs (TTL or CMOS), then the MD24 is a good choice:

http://midiwidget.com

The MPA has digital potentiometer outputs that can be substituted for manual pots in many applications:

http://forum.highlyliquid.com/forumdisplay.php?f=8

So if you need an analog voltage, you can either use the MPA digipot as a voltage divider input for an amplifier circuit, or you can use the MD24 digital outputs as a 7-bit parallel output that could control a DAC.

Both the MD24 and MPA will decode both notes and CC messages.

Quote:
I also decided to go further and add 2 separate trigger buttons. One sending a fixed velocity around 100, and another with a variable velocity knob so you can do precise ghost and accent kicks on the fly. (So velocity is a must for ins and outs).
Do you want to build the trigger buttons to generate MIDI output?
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Old 03-19-2013, 01:59 AM
Frivolous Frivolous is offline
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Do you want to build the trigger buttons to generate MIDI output?
Thanks John. Great insight!
Yes, I'd like the trigger buttons to send to the midi output. So I can record the performance and immediately play it back. What would I need for that?
Thanks!
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Old 03-19-2013, 03:22 PM
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John John is offline
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Thanks John. Great insight!
Yes, I'd like the trigger buttons to send to the midi output. So I can record the performance and immediately play it back. What would I need for that?
Thanks!
The MIDI CPU can send MIDI output in response to input from switches:

http://midicpu.com
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808, analog, bass, drummachine, kick

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