I tried changing the resolution of the image taken by the pi camera to speedup the eye detection. Input of size (1024, 768) took ~10 seconds while (256, 200) also took ~9.8 seconds so I did not bother messing with the algorithm too much. Instead focused on finding the perfect plank position to hold onto the raspberry pi camera and the ideal lighting. For the algorithm to work properly, the image needs to be in portrait mode with soft yellow light (obviously anything brighter would work equally well)
I tried automatizing the bluetooth setup but could not due to not having certain permissions on certain config files. Next week, I need to look into how to get around this. Worst case, we can setup the bluetooth manually.
I tested the server client communication by running the server on the pi and the client on the android app and it works well.
Angela:
I figured out some ways to design the setup as well as design the wearable for the baby. I found some scrap pieces of fabric as well as ordered some materials to make the wearable. I obtained a piece of wood for the mount if we need it. I also worked with Aayush to make sure that the potential setups would not interfere with eye open and closed detection.
I helped with some of the testing for the server client communication as well as automating the bluetooth setup.
I thought of ways to make sure everything runs sequentially because the Raspberry Pi only has 1 processor. The main way we are going to do it is to run each algorithm sequentially and at the beginning, get data from the arduino. If a eye open test isn’t done in the last 15 seconds, then we will do one of those. Results will then be pushed through the server to the app if the app is open. If not, it will not update until the app is opened.
Goals for the next week:
Iron out the set up design and implement it/make sure all of the componenets are ordered
Start building the wearable
Figure out what needs to be changed to automate the bluetooth set up
Priyanka:
I got a part of the circuit soldered and now that both the sensors are connected to the I2C pins on the teensy, I could get started on reading data from both the sensors at the same time.
I had to figure out how to add accelerometer to the I2C bus in my arduino code. It wasn’t sufficient that the sensors were connected to the I2C pins as the I2c pins were only identifying one of the sensors.
I also figured out that we had not ordered all the parts for the battery (booster, charger and the LiPo battery) so I ordered those.
I also worked on automating the bluetooth connection so that the bluetooth will connect to the pi on reboot. However, that’s still not working and we will have to make some changes to source files to make that possible.
