Midi Expression Pedals

Q & A for building and interfacing your rack gear with Ground Control Pro and GCX-based systems.
tcooley@mac.com
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Joined: Fri Jan 15, 2010 11:18 pm

Midi Expression Pedals

Post by tcooley@mac.com » Fri Jan 15, 2010 11:30 pm

Anyone know of a good MIDI expression pedal (one for volume and one for Wah) to use with the Ground Control Pro?
M Audio makes one but it is small, plastic and has a really short travel. I'd like something sturdy and nice.
Thanks,
Tim

Skwisgaar
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Joined: Sun Dec 20, 2009 1:32 am

Re: Midi Expression Pedals

Post by Skwisgaar » Sat Jan 16, 2010 7:48 pm

Last edited by Skwisgaar on Sun Jan 24, 2010 4:06 pm, edited 1 time in total.

JohnClark
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Re: Midi Expression Pedals

Post by JohnClark » Wed Jan 20, 2010 10:56 am

The Ernie Ball pedals are quite bullet proof and have been a long time go to for Ground Controls. Just about any passive pedal will work with the Ground Control Pro.

p.s. Never mind the pot value... Ground Control Pro does not care. If you must pick, pick a value that suits any other need you may have for a volume or expression pedal.
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Skwisgaar
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Re: Midi Expression Pedals

Post by Skwisgaar » Sun Jan 24, 2010 4:18 pm

The taper on any expression or volume pedal is not going to be correct for a wah effect. The only such pedal that would work correctly is the Dunlop DCR-1FC, which is made for Dunlop's rack wah. You could also try modding a volume/expression pedal with an alternate potentiometer. This would be the sort of thing Robert Keeley would do. The only hitch - I don't know of any multi-effects wah that doesn't suck.

kebabeater
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Joined: Thu Oct 22, 2009 2:24 am

Re: Midi Expression Pedals

Post by kebabeater » Mon Feb 01, 2010 9:40 am

JohnClark wrote:The Ernie Ball pedals are quite bullet proof and have been a long time go to for Ground Controls. Just about any passive pedal will work with the Ground Control Pro.

p.s. Never mind the pot value... Ground Control Pro does not care. If you must pick, pick a value that suits any other need you may have for a volume or expression pedal.
Is it possible with say the Ernie Ball or Boss FV500 pedals to set the pedal to either control volume OR expression depending on the preset selected on the GCP? I.e. what I don't want is to connect the pedal to the GCP for pitch modulation and for it to also reduce/increase the volume at the same time; or would I need 2 separate pedals, one for volume and one for expression?

Skwisgaar
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Re: Midi Expression Pedals

Post by Skwisgaar » Tue Feb 02, 2010 6:45 am

kebabeater wrote: Is it possible with say the Ernie Ball or Boss FV500 pedals to set the pedal to either control volume OR expression depending on the preset selected on the GCP?
This is not an issue. Continuous controls don't work like that at all. It is not possible for what you fear to happen.

JohnClark
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Re: Midi Expression Pedals

Post by JohnClark » Tue Feb 02, 2010 3:40 pm

The actual function that the expression pedal performs is programmed per Ground Control Pro preset. On one Ground Control Pro preset Pedal 1 can send Control Change 007 on MIDI channel 1 and on another Ground Control Pro preset Pedal 1 can send Control Change 122 on MIDI channel 5... basically you can edit the Control Change message from 0-120 and select any of the 8 possible devices named within the Ground Control Pro as the target with each preset.
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kebabeater
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Re: Midi Expression Pedals

Post by kebabeater » Wed Feb 03, 2010 6:43 am

JohnClark wrote:The actual function that the expression pedal performs is programmed per Ground Control Pro preset. On one Ground Control Pro preset Pedal 1 can send Control Change 007 on MIDI channel 1 and on another Ground Control Pro preset Pedal 1 can send Control Change 122 on MIDI channel 5... basically you can edit the Control Change message from 0-120 and select any of the 8 possible devices named within the Ground Control Pro as the target with each preset.
THanks John, does that mean for example on preset one I can select the expression pedal to control the volume, and on preset 2 I can select the expression pedal to control pitch?

Also can you recommend any compatible expression pedals with the GCPro that can acheieve the above?

Thanks

JohnClark
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Re: Midi Expression Pedals

Post by JohnClark » Wed Feb 03, 2010 1:36 pm

kebabeater wrote:THanks John, does that mean for example on preset one I can select the expression pedal to control the volume, and on preset 2 I can select the expression pedal to control pitch?
This is precisely what that means. Expression pedal function and target device is programmable for each preset.
Also can you recommend any compatible expression pedals with the GCPro that can acheieve the above?
I do... third post down in this thread. Also, any of the other pedals mentioned will work with the Ground Control Pro. Is there a pedal type you like?
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kebabeater
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Re: Midi Expression Pedals

Post by kebabeater » Thu Feb 04, 2010 6:42 am

JohnClark wrote:
kebabeater wrote:THanks John, does that mean for example on preset one I can select the expression pedal to control the volume, and on preset 2 I can select the expression pedal to control pitch?
This is precisely what that means. Expression pedal function and target device is programmable for each preset.
Also can you recommend any compatible expression pedals with the GCPro that can acheieve the above?
I do... third post down in this thread. Also, any of the other pedals mentioned will work with the Ground Control Pro. Is there a pedal type you like?
Great thanks John. With regards pedals I was considering the Boss FV500H pedal

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