Mark Pardue
700 Forest Mills Rd
Chesapeake, VA 23322
mark
I wanted to have one small foot switch with one button that I could quickly press to go from the original model to the second model, then press again to go back to the original model. Simple – one button – nothing to remember – just press to change & press again to change back – an indicator light to show 2nd model selected.
The Line 6 POD XT amp modeler has a MIDI input that can be used to send a Program Control code, which changes the POD setting to the particular model that corresponds to the Program Control code sent. If I could arrange the two models used for a 2-guitar song next to each other, then I could just go up one Program Control code for the secondary guitar part and then go back down one Program Control code for the first guitar part.
Luckily, a company called MIDI SolutionsTM makes a MIDI control that can be programmed to take one of several different types of Program Control actions, including increment or decrement. It takes as it’s input signal for the action a basic switch on using a ¼ inch phone jack to complete a circuit.
Overall Design
I bought two Footswitch Controllers and programmed one to increment and one to decrement.
I got the Footswitch Controllers to do the toggling I described by using a double-throw footswitch. I use one pole of the switch as shown in the diagram to go between the INC and DEC, and I use the other pole of the switch to light an LED powered by a 9-volt battery when I'm in DEC mode.
I replaced the mono 1/4" phone jack in the stomp box with a stereo 1/4" phone jack and use a stereo-to-two-mono cable to connect the stomp box to the two Footswitch Controllers.
The next thing to do was to merge the MIDI outs of the two MIDI footswitch boxes and send to the MIDI in of the POD XT.
More details with pictures are at this link:
Copyright 2014 Mark Pardue. All rights reserved.
Mark Pardue
700 Forest Mills Rd
Chesapeake, VA 23322
mark