1/23/24 Meeting
- Researched into microphones, analog microphone types with frequency ranges from 20Hz-20kHz
- Researched into pi cameras
- Procured an itemized list of components to purchase.
1/30/24 Meeting
- Waiting on hardware to ship in
- Discuss software to use when programming the pi
- Learn audacity, uses Nyquist, an audio based programming language. There is a scripting plugin to use python, any time delay?
- Open CV writes in python. Use for the pi camera. Has future potential when integrating a User Interface.
- Compute audio processing and image processing in parallel?
2/6/24 Meeting
- Looked through redlines of IPS document and weighed the functional requirement tasks.
- Removed z axis sound origin detection from our functional requirements for this semester.
- Began to upload the pi software to our pi board.
- Developed contingency plans in the instance our other parts don’t arrive soon.
3/5/24 Meeting
- Parts came in the mail.
- Ordered an Analog to digital converter and an I2C bus.
- Will need to create PCB’s for the mems microphones. Using KiCad do complete this.
3/12/24 Meeting
- Created PCB’s for out mems microphones and had them printed out.
- Discussed further steps on integrating camera and other software updates.
3/19/24 Meeting
- Met in the PLEXUS lab to solder mems mic to circuit board.
- Have been working on integrating a voltage regulator onto a circuit board with the I2C and ADC.
- Will also have to integrate opamps onto circuit board to increase gain of mems mic signal.
3/26/2024 Meeting
- designed a main circuit board to cad and print, the main board will include a 5v regulator, ADC and I2C.
- Will need to create new boards for mems mics that include a gain opamp, a 2v regulator, a bandpass filter, and the mems mics.
- went through and ordered the necessary parts to produce this product.
4/5/2024 Meeting
- Spent all day in the plexus lab soldering the new board for our glasses.
- Up next is data collection and analysis of the new board.
- need to integrate software with the boards after collection of data.
9/22/2024
- Been simulating different circuits to understand the best way to approach the amplification of the signal
- Working on the math to achieve the desired gain of the signal using the circuit we already have implemented.
- Next is to research pcb components that are more user friendly to attach to the circuit board.
9/24/2024
- Decided on components to board for analog circuit. Parts have been placed on order.
- Work on the KiCad model of the analog circuit board that will integrate the newly discussed ESP32.
- Next is to design PCB’s and breadboard components once they arrive.
10/1/2024
- Parts for breadboarding have arrived today. Analog circuit breadboard has been built and given to programmers to test.
- Up next is to finish designing the analog PCB’s in KiCad then the team will decide whether the project will remain analog or transition to digital.