What did you make and why is it cool?
I created this prosthetic hand created was made using 3-D printed parts. The design files were taken from inmoov.fr and were repurposed for a prosthetic hand. The hand can be controlled using electromyography signals take from the user. Electrodes were place on the tip and the base of the finger, and one electrode on the wrist. An Arduino Uno was programmed to collect the data and control the hand. Five servo motors were connected to each finger using two pieces of fishing line. The fishing line acts as tendons, which allows the motors to flex and extend the fingers. The hand currently controls a single finger at a time. Due to the power constraints of the Arduino, all five servo motors cannot be controlled at once.
How did you get started?
I started this project in my senior year at Bucknell University. I am a biomedical engineering major, and I have always found neural prosthetics interesting. I was given the opportunity to create a project of my choice for my Neural Signals and Systems class. Also, 3-D printing has been a great way for me to prototype my ideas and have freedom in my creativity. Using the files I found online allowed me to pursue this project affordably.
I graduated in May 2014 and will be pursuing my Ph.D. in biomedical engineering at Worcester Polytechnic Institute. I hope to extend my interests in the neuroengineering field in my research there. For my prosthetic hand, I am hoping to further extend its current capabilities. I would like the user to create different hand grips, or even control each finger independently.