Dual Looper

The Dual Loop allows you to alternate between two different effect loops. It provides two switchable loops (send / return) with a single foot switch.
Steps

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Designators and components Step 3 of 5

PCB DESIGNATORS

You can choose any type and color of diode led. The resistors set the brightness, recommended values for a normal led are from 2.2k to 4.7k Ohm. For high bright leds, you should use higher values for the resistor, from 10k to 22k Ohm.

Resistors        

RLa    3.3k    3.3K OHM 1/4W 1% METAL FILM RESISTOR
RLb    3.3k    3.3K OHM 1/4W 1% METAL FILM RESISTOR

Leds        
La    Green    LED 3MM GREEN
Lb    Green    LED 3MM GREEN

Switch
4PDT       4PDT STOMP FOOT / PEDAL SWITCH LATCHING

 

Connector
DC    2.1mm      DC POWER JACK 2.1MM BARREL-TYPE PCB MOUNT

PCB Back

GENERAL DESCRIPTION OF COMPONENTS

Resistors

The resistors should be ¼ Watt metal type. You can either use a multimeter or the color bands to obtain their values. Resistors do not have polarity, you can place them in any direction.

Led diodes

Led diodes have polarity, the cathode is indicated as a flat surface on the side of the diode and also it is the shorter led. On the PCB, the cathode is marked as a flat side and anode as a round side.