Carnegie Mellon ECE Capstone, Spring 2022: Angel Peprah, Judenique Auguste, Vivian Beaudoin
This week, I mainly worked on the final presentation, and started testing. I was able to test Bluetooth speed and accuracy for the buttons as well. I also started planning out the demo mode that we are going to show during demos. It will not …
No major design changes were made this week. The most significant risk we face at the moment is tests failing close to the deadline. We’re planning to finish our testing tomorrow so we have time to make any adjustments. We also need to get a …
This week, I mostly worked on the final presentation slides for our final presentation this week. I also made the breath sensor more resistant to humidity by adding some cardboard padding between the user’s mouth and the breath sensor, so hopefully less moisture gets into the breath sensor. From my testing so far, it has been better than the last iteration. I also glued down the buttons in the controller so they don’t move when the user presses them.
My progress is on schedule, I’m just planning to test and adjust until the deadline. We received the other board this week, but because having the board mounted on a breadboard at the end doesn’t affect the feel very much, we’re thinking of keeping it as is to make it easier to upload code fixed onto the board.
Next week, I hope to work with the group to finish up our testing. We have to still test the accuracy of the orientation feedback and breath sensor, as well as the weight of the device and the user survey feel of the device.
This I worked with Vivian to finalize the controller. We went to techspark and drilled in another hole for the breath control sensor, and I also helped to wire the buttons into the PVC pipe. We were able to fit all of the components into …
This week I was able to fully finish with the learn mode functionality and go through several scales to test it. I also finished my task of setting up an Apache server. However, I ran into a problem with the server that I don’t have …
No changes were made to the design this week.
The BLE board we were going to fit inside the controller broke this week, so we run the risk of not having a board that fits inside the controller. We’re ordering another one to come early next week, and worst case scenario the way we have the board mounted on the end of the PVC with tape doesn’t affect the user experience that much. Another risk we face is what to do if one of our three sensors is finicky. Currently, Vivian is running into some issues with humidity in the breath sensor, and at the moment none of the modes on the web app work without breath control and notes don’t play without breath control. We’re looking into ways to turn off the breath control at certain times and still have a working product, which is also a good idea for demo day if people want to test our project while wearing a mask.
Our schedule hasn’t changed, we’re currently in our slack time so we’re testing and making adjustments as necessary.
Below is a picture of our (mostly) completed wireless controller!
This week, I worked with Angel to cut a hole in the PVC pipe for our breath sensor. I also cut down all the wires, connected all the grounds to a common ground using wagos, and fit everything inside the controller nicely. Currently, our board …
This week, I added breath control inputs into the program that plays the flute sounds. Previously, it was only depending on the fingerings. This allows me to test playing different octaves of notes, as well as testing duration/start/stopping of playing those notes. I also started …
This week was about finishing up the learn mode and working on further integration with the controller. Specifically, I was able to interpret more of the controller data: the new data would render a bar with how hard a user is blowing and the other would be for the angle. Currently, I have data shown on the website and one of my tasks for the next week is to create the HTML to illustrate the feedback for the user. Additionally, I have started the additions for the other scales. We are planning to do 14 scales and it should not take too much time to add since it will be split by the team. I am on track with the proposed schedule and my goals for next week are to create the HTML display and start on the other modes. However, the final presentation is due next Sunday so I will have to postpone some tasks for the following week.
With about two weeks coming up to the end of our project, we are working on finishing the final components. We previously had stated we got all the components working in sync, however, they were not the final version such as the controller and display …