MIDI control output references or examples?

wrightme

Hello all, been inactive, but have come up with a project I want to work on. Finally.

I am getting a Line 6 POD 2.0, and it does not have the 4-button pedal control with it. I am thinking of constructing a similar box using the MIDI controls to do the same thing. A brief search turned up this thread:
http://forums.parallax.com/showthread.php/158488-MIDI-Controller-BS2?highlight=propeller+pod+midi

Does anyone here know of some references such as noted in that thread? Other than basic stamp and propeller tutorials, this will be my first real world project.


At present, I am thinking at least a 3 or 4 button box that can scroll through the Line 6 Pod amp models and select one. In addition, I would want to be able to select effects. I have downloaded the Pod manuals and MIDI references, so I will know what codes to send. It has its own 568 ethernet jack for the stock pedal, and it has midi in/out jacks.

Bob Lawrence (VE1RLL)

re:http://forums.parallax.com/showthrea...eller+pod+midi


A few years ago (5 or 6 or so) I designed a microcontroller based control box for my line 6 PODXT. The reason I did was that I did was because I play pedal steel guitar and I had problem changing from program to program with the PODXT knobs with picks on my fingers during live shows. Sometimes I had to change settings during a song for a different effect. When I tride to use the knobs on the PODXT I often got surprising results and the wrong settings. The box I made allowed me to clip it to the leg of my guitar and press buttons to change settings such a Cloris Delay etc. It worked great. I designed it using a PIC microcontroller( that was before I got into the Propeller chip). I have some info that may help you but I don't have time to dig it out until sometime next week. You can easily make one with the Propeller chip.

Bob

Bob Lawrence (VE1RLL)

You can start with this old thread:

http://forums.parallax.com/showthread.php/128443-Newb-looking-to-make-a-MIDI-controller.?highlight=Newb+make+MIDI+controller.

wrightme

Thanks, this looks like a good starting point, appreciate the directions.

Bob Lawrence (VE1RLL)

I went through my info and there is nothing special that's not in the Manual reference's (see the reference to Appendix B below). All I did was set up the programs (i.e Digital Delay , Flanger etc ) the way I wanted it on the PODxt and then use the control box to push a button and send the MIDI program message to the PODxt. Each button was hard coded for a specific program I used a LCD display to displayed what I selected on the control box.

You can grab a serial object and set it to 31.25KB (MIDI). Use the transmit MIDI (Send) schematic in the URL provided in the other thread. Once you get basic MIDI working you can then learn to send program + control messages.



In my case I sent program change messages from (CC = Controller Change):
Appendix B: MIDI program Changes
Page 142


You may need this as well:

Continuous Controller Reference

http://line6.com/data/6/0a060b316ac34f0593546810e/application/pdf/MIDI%20Continuous%20Controller%20Reference%20-%20English%20%28%20Rev%20F%20%29.pdf

Bob Lawrence (VE1RLL)

Here's a version I found on YouTube the can scan through the programs:

http://www.diystompboxes.com/smfforum/index.php?topic=70512.0;prev_next=next

wrightme

Thanks for the assistance. I sure appreciate it.
I think I have some reading to do.