This week, I focused on finalizing design choices, ordering parts, and creating the presentation slides/ document. I spent a lot of time on the force sensitive resistors, because after our meeting with Tamal on Tuesday I realized it would make more sense to go with sensor arrays than with individual resistors – as this would lead to a lot of complicated wiring. I went with the following sensor array: 
It is commonly used for measuring weight distribution when standing, and by using multiple of them, I can get a lot more measurement for the same price. Specifically, 1 individual FSR is the same price as the 8 FSRs that come on this mat. I will not use all of the sensors (because I need to mux them in order to convert them to digital values), but I can play around with the different configurations of which sensor to use. As seen in the picture I am going to use 4 sensors from each pressure mat. From first glance, I want to use the 4 sensors in boxes, but based on testing I will do once the parts arrive, different mats will use different sensors. The current plan is to hook up 4 sensors through a voltage divider circuit into the ADC, which has an op amp amplifier. It will then get sent through I2C communications to the RasPi. I also spent time making the slides for the presentation this upcoming Monday. Outside of that, since we have our RasPi, I am also working towards putting the RasPi on the CMU Device network in order to host the server – this is a more complicated process than anticipated but I am working through it.
I am not behind schedule. This week, I accomplished ordering all of the necessary parts/finalizing BOM & beginning to start hosting the local server, which was what I wanted to accomplish. This upcoming week depending on when my parts arrive I might find difficulty finishing the work I want to do (a first test of the sensors and connecting the ADC) if the parts are delayed / the RasPi does not boot. To keep myself on track, I plan on continuing testing with a RasPi Pico in order to still be able to start writing and testing code for ADC and I2C this week, as this way I can stay on top of the sensor creation. It will also help me start working on the integration earlier.