IT is actually possible to build a very simple pedal yourself. You can tape two tinfoil "electrodes" on cardboard and fold it so that they touch when it's completely folded. Then also put some sponge between the folded cardboard so that it releases reliably. If you connect a mono audio cable to the electrodes you have a working pedal. This worked in a pinch for an electronic drum set and it is also much quieter than a real pedal.