Expression pedal to MIDI continuous controller

DIY project to make a box to send MIDI continuous controller messages based on expression pedal input. My reason for doing this was to drive the wah effect in Line6 GearBox (MIDI CC#4) using my M-Audio EX-P pedal. ... since I have a Toneport UX2 it has no expression pedal input. Based around a battery powered homebrew Arduino clone built on stripboard.

Category:

Science & Technology

Tags:

• midi
• arduino
• expression
• pedal
• line6
• gearbox

[mikyj139]

Hey in want to thank you fro this video, and my question is, after watching your video i started researching whats Arduino etc. but now there different one and even old ones on ebay, my question is which one would work for me, i simply want to convert the analog input using a expression pedal and release midi message to my Whammy pedal, by the way do you that i could also be able to change the different selections of the whammy using arduino, have presets and conbine presets on it? lol

[hotchk155]

@mikyj139 - Thanks for your comments! yeah there are a lot of different Arduino boards about.. its an open standard so anyone can make and sell them and also they are based on different chips (Atmega168, 328 etc) but any one of them will be suitable I think. For MIDI stuff you can use a cheap 168 based board. The code I used was based on code by Tom Scarff, so I did not post it since much of it was borrowed. However take a look tomscarff .110mb .com look for switch and controller pedals project

[hotchk155]

@mikyj139 BTW if you want to do clever stuff with stored presets, multiple controllers etc I'm sure you can with an Arduino!

[saverjo]

a sustain pedal is enough or an expression pedal is something more?

sorry for the question :D

[hotchk155]

hmm - I *think* an sustain pedal is an on/off switch but an expression pedal is a variable resistor... so I think you need an expression pedal not sustain

[mikyj139]

@hotchk155 thanks for taking your time in answering

[mikyj139]

Really cool toy you made, do you have the schematics for this? it would be great, i want to use an expression pedal to control the whammy pedal , is that i dont find the whammy pedal sturdy, do you think it would work? manily i want to convert the expression pedal input and out put it as a midi, thats all im interested, i would greatly appreciate your help

[hotchk155]

I sent you a PM with the code. On this project I was using a modified version of Tom Scarff's Miduino code for pots to cc# project. Google on Miduino

[javiercbk]

@hotchk155 Is ther any way to have the source code??? I have the same pedal and chip (arduino chip) but I can't work it out.

[saverjo]

i had not know the difference between expression and sustain pedal (wikipedia is not so clear in this case ;) )

thanks!!