October was a challenging month. During October we had to create our own rover that could complete an obstacle course that involved moving balls into buckets. I was partnered with two other people. We had to create a business presentation complete with a budget. To get funding we had to present to the teachers. The top three teams received extra financing and priority on the 3D printer and materials.
Unfortunately, our team did not get into one of the top three positions. Fortunately for our team, one of our team members had a 3D printer at home and we were able to get all of the parts that we needed for our project printed. This was beneficial because 3D printed parts were lighter and cheaper to purchase than their metal or wood counterparts. Our rover was comprised of the wheels and motors from an old RC car, a lot of 3D printed parts, zipties and hot glue. To control our rover we decided to use a Raspberry Pi, two H bridges and a voltage step-up converter. We required the voltage step-up converter to power the H bridges from the Raspberry Pi, the Raspberry Pi outputs 3.8V and the H bridge required 5V. We programming the Raspberry Pi to use a bluetooth gaming controller to control the rover. When doing testing prior to running the course for the rover the lithium battery was shorted by accident. We immediately realized that the smoke coming from the battery was not optimal and frantically ripped wires off of the rover to stop the short. As a result we weren't able to run the tests. Fortunately we were able to fix the rover and run the course the next day.
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May 2020
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