This week I mainly worked on setting up the firmware to take in a metronome volume in the MIDI file. This involved modifying Tushaar’s MIDI file parsing code to take in an additional parameter at the beginning of the file. I then transformed the 0-10 volume provided by the Pi into a PWM value to provide to the buzzer and then passed this into the metronome functions I wrote last week.
I also worked on downloading various MIDI files and uploading them to the system. This was done to verify that the system can properly handle numerous different MIDI files. This also allowed us to build up a library of songs for people to play during the demo.
While Ashwin was working on the statistics collection, I play tested the various songs and generated data for him to display. This also allowed us to verify that the firmware fix Tushaar implemented earlier in the week was functional. The issue was that after around 40 minutes various system values would overflow, since ~36 minutes corresponds to approximately 2^31 us. We experienced no issues with the system.
Additionally, I worked on making the ‘in waiting’ LED pattern on the guitar slightly more dynamic.
In order to more easily show off the Pi-Hat and Teensy electronics, I finished soldering our backup Pi-Hat board and assembled it with my personal RPI 4B and Teensy 4.1. This will prevent us from needing to take the electronics out of the guitar during the demo.
My final main tasks for this week were working on the poster, which consisted of taking photos of the assembled system and taking the electronics out of the system for imaging.
Progress is on schedule and future work only consists of final preparations for the demo and working on the final video and report.