For my final project, I used everything I had done up to this point to create 1 robot that can route a maze and blow out a flame. To do this I used stepper motor with wheels mounted to it in order to move, the ultrasonic sensor to detect the walls of the maze, a UV sensor to detect a flame, and a fan to put out the fire.
The first component I made was the mount and wheels for my stepper motor. Both components where 3d printed. The mount consists of five holes, the largest for the motor output and the remaining 4 are screw holes to mount the stepper to a base. Once I had the mount, I began to 3d print hubs so I could find the correct size to press fit onto the stepper motor. Once I had a hub that fit correctly, I printed a full-size wheel to attach to my stepper motor.
I also printed a ping pong ball holder that my professor found on Thingaverse this allowed us to have 3 wheels while only needing to control 2.
Now that my partner and I had all the part, we mounted them all to the foam board base that was provided. The ultrasonic sensor was used to see how far the robot was from the walls and if the robot was too close turn a certain amount, the flame sensor was used to tell the robot once we had encountered the flame, and finally the fan blew out the flame.
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