Purpose
Our goal is to create an audio mixer that will solve our client’s problem. It will consist of an enclosure that takes multiple outputs and will combine them into one output. The inputs will consist of several different interfaces to maximize the usefulness of the mixer. Each input will have a knob to adjust the volume. Our design will implement a mixture of analog circuitry and embedded controls in order to mix the input audio. The design will be cost-efficient, reliable, and also have a high degree of manufacturability.
pcb Design
Our design is constantly updating, so be sure to check back for future updates.
Also, check out our design document here and our project plan here to see our design processes.
Our project required a PCB design for the circuitry inside the enclosure. We first had to come up with a plan of what circuits would be required in our design. The following circuits were drawn up and tested in in a circuit simulating software PSPICE:
Also, check out our design document here and our project plan here to see our design processes.
Our project required a PCB design for the circuitry inside the enclosure. We first had to come up with a plan of what circuits would be required in our design. The following circuits were drawn up and tested in in a circuit simulating software PSPICE:
Using Cadsoft EAGLE PCB Design Software, these circuits were inserted into a design and we obtained the following image for our PCB design which we intend to have manufactured (total size 6.4" x 3.9") :
enclosure design
We also wanted to design our own enclosure for the mixer, which was done with Autodesk Inventor 3D CAD software. The following is our design which we intend to have fabricated:
mixer 1.0 challenges
- Potentiometer clipping
- Voltage regulator heatsink size
- Internal wiring was messy
- Raspberry Pi unsafely shutting down
- Enclosure component dimensions