Description: This project is a digital, real-time multi-effect guitar pedal powered by an Arduino microcontroller. The system captures the analog audio signal from an electric guitar and converts it into a digital stream using an Analog-to-Digital Converter (ADC). Once digitized, the microcontroller applies Digital Signal Processing (DSP) algorithms to manipulate the audio in real-time. The processed signal is then reconstructed into an analog sound wave via a Digital-to-Analog Converter (DAC) and sent to the amplifier.

For the user interface, the pedal features an intuitive control panel: an LCD screen displays the currently active effect, a tactile push-button allows the user to seamlessly cycle through the four available effects, and a potentiometer knob provides real-time control over the intensity of the applied effect.

Implemented effects are:

• Distortion
• Overdrive
• Delay
• Reverb

Utilities: This device offers guitarists an all-in-one compact unit that replaces the need for multiple standalone pedals. Its plug-and-play design ensures an easy setup, that gets musicians ready to perform with a variety of core guitar tones.

Inspiration: I wanted to do something practical that I would actually use. Guitar pedals are quite expensive and I only own one so I thought I could expand the collection for a cheaper price. Also, audio manipulation is an interesting technical domain; this project provides the opportunity to experiment with sound signals, DSP coding, and the intersection of hardware and software engineering.