RATThis is the RAT, one of the most popular distortion effects from the 80´s. It performs very nice high-gain distortion suitable for metal, grunge or rock.
Enclosure and wiring Step 4 of 5
Place the assembled PCB and the rest of the components (DC and 3.5 jack connectors, 9V battery clip, 3PDT foot switch, led...) in a metal enclosure. Connect the ground of the circuit to the enclosure in order to attenuate the noise (the GND of the input and output jacks are in contact with the enclosure). The following figure shows a component distribution example for 1590B enclosure.
You may need to remove the little metal tag from the potentiometers in order to place them in the enclosure.
For the wiring, use a 24 AWG stranded wire and connect all the elements as indicated in the following figure. No matter the order you follow to connect the ground (GND) as far as all the elements are connected. The diode led requires a current limiter resistor, you can use values in between 2.2k and 4.7k for regular leds. The following figure shows the wiring with a negative tip DC connector (standardized Boss style 2.1 mm with a negative tip orientation).
The PCB for 3PDT footswitch will help you to wire all the components, keep a neat circuit and reduce the noise. This PCB also includes pads for the led and its current limiter resistor.
If you are going to use a 1590B enclosure, this PCB will definitely save your time and help you to build your pedal. Led, jacks, and footswitch are mounted on the PCB. You will only need to wire the battery clip and the effect PCB. Drilling templates are available on the instructions web site.