Dickerbox - Guitar Pedal Sandbox

I made this pedal sandbox prototype because I wanted to..

  • simplify designing effect circuitry
  • make a pedal with swappable effects

The idea is to isolate the offboard controls from the onboard circuitry.

The pedal housing has Volume, Tone and Gain controls, but has no native effects onboard. Effects are pluggable, like cartridges.

The effects circuits are super cheap.

Could build like a million effects for the cost of one pedal housing.

Dickerbox has a female connector with four pins that supply the effect circuit with ins/outs and power.

Use the handy dandy homemade adaptor to connect the pedal to a breadboard.

Once the effect circuit is created and tested, it can be assembled onto a circuit board (or something) and plugged in.

Below is a simple fuzz circuit I soldered directly to a connector.

Ugly little shit indeed, but it works.

- MODULAR CIRCUIT MODE

Dickerbox with modular effect attached

* Terrible audio quality alert. This is not what the pedal really sounds like. It's been gimped during video encoding. Just know that it is epic, panty melting quality.

- DESIGN MODE

Here, we connect to a breadboard

This is where the dickering comes in. I love dickering.

Slightly different version of the above circuit I've been dickering. It sounds a little better.

- EFFECT SCHEMATIC

Here's the effect schematic .. the infamous Bazz Fuss circuit. The pin colors correspond to the pin colors in the pedal body schematic.

There's literally five components ..

  • Q1 - Transistor
  • D1 - Diode
  • C2 - Input Coupling Capacitor
  • C3 - Output Coupling Capacitor
  • R5 - Resistor

- PEDAL HOUSING SCHEMATIC

The inside

  • S1 - TPDT Footswitch
  • R1 - Gain Pot
  • R2 - Tone Pot
  • R3 - Volume Pot
  • R4 - Current Limiting Resistor
  • C1 - Tone Capacitor
  • L1 - LED
  • In - 1/4 Phono Jack
  • Out - 1/4 Phono Jack

The next iteration will be on a circuit board, so it won't be a rat's nest.

Yes, it's made out of an old iPhone box. Don't judge me.