I’m Lucas and I am a rising senior at Regis High School. My main project was a three-joint robotic arm, based on a previous BlueStamp project. I decided to work on a robotic arm because I am interested in working in prosthetics in the future. My starter project was the Minty Boost USB charger, which can be found on the Adafruit website. I decided to do this project because I wanted a portable phone charger since I always run out of battery.
Working on my robotic arm has taught me a lot about engineering. I learned that while I enjoy coding and electrical work, I especially like mechanical work. I was excited to finally apply all the concepts I learned in physics to a real world project. I faced many challenges in reaching each milestone. In order to get the servos to move, I had to teach myself how to code in Arduino. To cut the mechanical parts of the arm, I had to teach myself about torque, a concept that was not covered in my physics class. For my arm to be assembled correctly, I needed the metal to be cut precisely, and my initially attempts weren’t up to par. I overcame this obstacle by becoming more comfortable with the power tools. My initial plan to use the stepper motor at the base of the arm failed. I was forced to trouble shoot the problem, attempting to use gear ratios and then finally falling back on mechanical power. Though these problems proved frustrating as they arose, I am glad I faced them instead of giving up. Overcoming these obstacles makes me feel even more proud in completing my project.
Torque Calculations: torque-calculations
Circuit Diagram: arm_circuit_diagram
Mechanical Drawings: lucas_mechanical_drawings
Arm Base: http://a360.co/2fcQVoS
First Joint: http://a360.co/2fccQfG
Second Joint: http://a360.co/2u8twLP
L Base: http://a360.co/2fc2e0o
L Wood Base: http://a360.co/2u7YS5x
Wood Base: http://a360.co/2hrbZIN
Assembled Arm: http://a360.co/2waYXCA
Base Servo Heads: http://a360.co/2uoFe09
Joint Servo Heads: http://a360.co/2wb4QQi