MIDI patch change, remote control

For the Wahoo™ Dual-Analogue, Digitally-Controlled Wah/Filter Pedal

MIDI patch change, remote control

Postby cupofbru » Mon Jan 16, 2017 4:42 pm

I would like to control patch changes without bending down, one solution I can think of is a MIDI switch attached to the guitar that exclusively sends this message out. Is this something Sonuus do, or could advise on how to do this [DIY style]?

Many thanks
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Re: MIDI patch change, remote control

Postby james » Mon Jan 16, 2017 5:26 pm

Setlist mode makes it easy to change presets using the footswitch. You can configure how to change presets in various ways. This video gives a quick overview of setlists: https://youtu.be/dt-I3CmNG6Q

To send MIDI to the Wahoo you need a "USB host" there are a few of these available that will convert the USB on the MIDI to the 5-pin MIDI to make it easier to connect MIDI controllers. There are various DIY options depending on how skilled you are. For example, I believe you can use a Raspberry Pi to do the MIDI host for you, and at the same time you could configure it to send the required MIDI program changes. It would need some wiring-up and some programming to get that working. I don't know the details of what's required for this, maybe someone else can offer help.
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Re: MIDI patch change, remote control

Postby Jonners » Mon Feb 06, 2017 9:27 pm

I've been looking at this today.

Best solution on the DIY front, so far as I can make out, is as follows:

Arduino UNO (or equivalent, such as Sparkfun Redboard) which has up to 14 digital inputs, along with a USB Host Controller. The Arduino/Redboard has 14 digital inputs which can be wired up to pushbuttons (with appropriate pull up/down resistors as required).

The Redboard plus USB controller is not much over £30. Of course a case and switches soon start to mount up the cost.

The USB Host controller can be programmed with MIDI USB Host code as a free download.

Then all that's needed is to program the Arduino/Redboard to send the correct CC signals according to the buttons pushed. If you want to be really clever, you could use DIP switches on spare digital inputs to select which CC signal to send (just thought of that - I like it!)

I would have two button inputs: Preset Up and Preset Down, along with a 'Both' option to toggle between banks, plus an optional 'speed up' feature if either Up or Down button is held for a long time (like digital clocks do).

Unfortunately the MIDI USB Host code won't work through a hub, otherwise I would consider having multiple sets of switches to program multiple pedals. At the moment it looks like separate boards for each pedal.
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Re: MIDI patch change, remote control

Postby james » Tue Feb 07, 2017 10:23 am

Thanks for the update - nice!

Remember if you use setlist mode you can assign presets to particular program changes, so you could configure buttons to choose the presets you want to use. You can then select a different setlist and have different presets available without having to reconfigure the MIDI side of things: the buttons would now select the new presets you want.
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Re: MIDI patch change, remote control

Postby Oberts » Mon Nov 20, 2017 11:59 am

james wrote:Thanks for the update - nice!

Remember if you use setlist mode you can assign presets to particular program changes, so you could configure buttons to choose the presets you want to use. You can then select a different setlist and have different presets available without having to reconfigure the MIDI side of things: the buttons would now select the new presets you want.


Thanks James I never knew you could do that with the presets!
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