OCD overdriveThi popular DIY pedal produces the dynamic feeling and harmonics typical of tube amps. It incorporates a switch to control the bright and thick of the overdrive.
Enclosure and wiring Step 4 of 5
You should place the assembled PCB and the rest of the elements (DC and 3.5 jack connectors, 9V battery clip, 3PDT foot switch, led...) in a metal enclosure. The following figure shows the components placed in the 1590B enclosure. It is recommended to connect the ground to the enclosure in order to attenuate the noise (the GND of the input and output jacks are in contact with the enclosure).
You may need to remove the little metal tag from the potentiometers in order to place them in the enclosure.
For the wiring, you should use 24 AWG stranded wire. 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 figure shows the connections for the DC connector used as a negative tip (standardized Boss style 2.1 mm with a negative tip orientation).
You can use the PCB for 3PDT footswitch. It 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 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.