Throughout this whole project, we realized circuitry isn’t simply just hooking up an assortment of electronic pieces together in series and expect our proposed solution to work seamlessly. Originally, we planned on delivering the product that actually modeled the lungs with an air pump and a balloon. As the user is supposed to breathe in, the balloon inflates, and as the user is supposed to breathe out, the balloon deflates. We were able to make a working prototype of this in class, however, there was one glaring issue: we were designing something to help people relax and the rumbling sound of the air pump just made the product ineffective at being soothing and calm. Since this was an issue, we weren’t able to mitigate as easily, we decided to go on a different approach, using a medium that didn’t emit too much sound: light. So, then we decided to use lights to signal how the user should regulate their breathing, but this is when we bumped into another set of problems. The Particleboard outputs 3V but our proximity sensor used about 5 V and the lights we were planning on using for our design used 12 V. So we had to implement voltage dividers throughout our design to get the lights to function and the proximity sensor to collect data. In the end, we ended up encountering one last roadblock in the form of the lights not functioning as we intended. When debugging all the values we were searching for showed up when using the serial out - the distance and brightness were always being recorded as the right value; however, when it came to the light actually turning out, they just didn’t despite our attempts to get it to function.