PCB
Here is the final PCB prototype. Unfortunately, we had a design error and the Teensy, along with the audio shield, didn’t fit into the circuit board. After realizing our error, we pivoted to deliver a breadboard prototype, including a level-shifting first stage.
Final Prototype
As the Teensy and Audio Shield could not be mounted correctly on the PCB, we created a breadboard prototype as our final design. This prototype includes not only the signal processing stage but a gain stage before this as well in order to accommodate multiple voltage levels on the input side. This stage was powered by a 9V battery, and the main stage was powered through a USB cable connected to a laptop.
Demo
Usage Guide
