[109] Bicolor LED in Stompboxes

Date: July 23rd, 2008 | Comments : [1] | Categories: DIY.

Bicolor led for guitar effects pedals

Here is a way to use a 2-pin bicolor LED in a guitar stompbox. The 3PDT footswitch will pull one end of the LED alternately high or low and cause it to change color.

When the switch is connected to the top poles, the current flows from the 9v of the switch through the upper LED (green) and through the lower 10k resistor to ground. When the switch is toggled so that the center lug is connected to ground, the current flows from the upper 10k resistor through the bottom LED (red) to the switch and ground. Stomping the switch will alternate the LED between red and green.

If you want the red and green to change which switch position activates them, just rotate the LED 180° in the circuit putting the flat side to the right.


One Response to “Bicolor LED in Stompboxes”

[599] DimebuGG Says: 8:05 am, January 16th, 2009

I assume this can be applied by using two different colored LEDs and wired as shown?. Will this introduce the horrible pop ?


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