Overview • Hardware Design • Build Photos • Schematic
This project is an implementation and prototyping of the Little Angel Chorus effect pedal, an analog circuit that uses Bucket Brigade Device (BBD) technology to create the chorus modulation effect. It was developed based on Rick Holt's schematic.
The circuit was designed and built for the purpose of study and manufacturing of an audio pedal for the undergraduate "Electronics Project Level 1" course, taught at the Federal University of Santa Catarina.
The fabrication and shipping of the printed board for this project was a courtesy of the PCBWay, thank you for making this idea possible!
- Design: Two-layer printed circuit board, designed in KiCad.
- Core Component: Uses a BBD chip for signal delay, essential for the Chorus effect.
- Output: The board was designed to fit into a standard pedal enclosure.
- Prototyping on Breadboard: The circuit was initially assembled on a breadboard for testing and validating functionality before the final PCB design.
- Validation: The breadboard assembly allowed for confirmation of the modulation circuit behavior and the BBD performance.
Here are the images of the development and the final product.
| Development Stage (Prototype) | Printed Circuit Board (Layout) | 3D Visualization of the PCB | Final Product (Enclosed) |
|---|---|---|---|
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| Breadboard assembly for initial functional testing. | PCB layout measuring 5cm x 6cm to fit inside the 1590B enclosure. | Three-dimensional view of the soldered board. | Pedal with components soldered and assembled inside the metal enclosure. |
The project schematic and the Gerber files for PCB manufacturing can be found in the outputs/ folder and the original KiCad project in the repository root.