Here’s a first run of a square wave tap tempo tremolo design. We’re keeping it simple. One LED to flash the rate, one to show when the pedal is activated. The knob controls the depth. Left switch is on/off, right is to tap the tempo. Runs on 9VDC only so no battery. This is available on the fxdoctor.com specials page for $100. Future runs of this pedal may be built.