.png){kind=logo}
mimic hands
A mechanical hand mimics dynamics of human hands
Motivation
The idea comes from the movie IRON MAN. The goal of robotic hands is to develop prosthetic devices for imitating gestures of human hands, which cost under 50 dollars and are easily made from home. Therefore, I chose 3D printing to make the hands part rather than aluminum tubes, and in order to cost down the spending on controllers, I use micro-controllers like PIC18 and Arduino rather than single-board computers such as Raspberry Pi.
Development Process
This side project started in my first year in college while I was making this for the Maker Faire Taipei 2014. I used my spare time to redesign its mechanism and change the control unit during my sophomore year and exhibit it in the Maker Party 2015. In 2016, I enhance the stability of servos and power control.
3rd Gen
-
Replace ABS with PLA 3D printing material because it has more color options and better details while printing.
-
Merge 5 tunnels for strings into one generic entrance.
-
Use flexible TPE 3D-printing material for finger joints to improve the fluency of movements and avoiding the elasticity fatigue of the 2nd generation.
-
Controlled by PIC24 microcontroller programmed by assembly language.
2nd Gen
-
Made of ABS 3D printing hands and use elastic bandage as finger joints.
-
Add signal source from 5 bendable transistor strips attached to a glove.
-
Reorganized the position of 5 actuators in order to shrink the dimensions of the hands.
1st Gen
-
Made of aluminum tubes and use five servos to pull the nylon strings connecting to 5 fingers.
-
Controlled by Arduino Uno generating PWM signal outputs to change the positions of fingers.
