EVO. Ⅴ

Eric's most advanced prosthetic yet. Fully equipped with Arduino components, batteries, and quarantine reminisces, this prototype took a total of two months to construct. Basing the hand off the previous hand from the same set, Eric constructed the hand in similar steps. First building pieces around his left hand, and then moving onto the wrist portion. This time, he made sure to calculate the angle of claw movements and where to place certain specific peices of LEGO Technic parts to meet the desired functionality. He had successfully built the frame. Instead of calling it complete, her decided to add a little twist. Eric's love for coding had seeped into the idea of building an electronically powered LEGO prosthetic. Motivated by his past mistakes and his burning passion for coding, he did countless research and found the exact gadget he needed. He found that Arduino is an open-source electronic prototyping platform enabling users to create interactive electronic objects. Learning how to program the Arduino board starting from the basics and building several projects, he managed to gain enough experience in two months to make his goal come true. Using Arduino to control a servo, he intricately placed the servo on the top portion of the wrist, which is connected to the claw part with durable string. With a programmed button located near his left thumb, he is able to control the servo to pull the string down in a 180 degree motion, which applies tension. The tension causes the claw to move with the movement of the wrist. Everything is powered using two lithium-ion in a homemade cardboard/tinfoil battery pack connected to the Arduino board. Eric finally realized this hand is proof that hard-work pays off.