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Our final design adequately solved the problem that we were trying to address. The user can successfully enter a combination in and the servo will turn to unlock the door. All of the components functioned as expected so the only modifications we would have made given more time would be some optimizations.
One change we would have made if given more time would be the organization of the wiring, the back of the door has a lot of wires and is very confusing especially when a wire comes out and we need to figure out where it needs to go back into. To solve this issue we could have put most of the wiring onto a PCB board and soldered all of the connections so that they would be permanent and wouldn't have jumper wires sticking out giving it a cleaner look.
Another change we would have done with more time would be to reprint the servo mount with the correct dimensions. Without any measuring devices in a dorm room, we were not able to get an accurate measurement on the lock plate of a door so obviously, when we tried fitting the servo plate onto the plate it was way too small. So to fix this we needed to sand the piece down to allow it to fit. This process isn't perfect and even after the sanding, it didn't fit great onto the lock plate. Also while the part was printing there was an error with the extruder so the part didn't actually finish printing but we decided to make it work by using fewer bolts than intended.
The last change we would have done with more time would be a better way to connect the front and back housing together. With this setup it required 14 individual wires going between each side of the door which caused a lot of unnecessary mess. With more time we could have ordered CAT5 wire which has multiple individual wires inside of it which would have required us to only wire 1 or 2 of these wires between the front and back making it look a lot cleaner than it does.
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