Here's what you need:
– 1N4001 diodes [x2] (though Dan from T1M said any diode will work when I emailed him about it)
– Stereo ¼” jack
– SPST momentary footswitch [x3]
– Enclosure (and a drill if you don't already have one)
And obviously a soldering iron + hook up wire.
Here is a great/easy to understand tutorial:
