For the color changing assignment, I wanted to explore how thermochromatic ink can help reveal emotions.
I first sketched some facial expressions that could be represented using threads.
Then I used a paper box to represent the face.
I then sew the facial feature onto the fabric and the box
Here are the results:
Thermobot in action
Voltage: 3.7 V
Resistance: 15.9 Ohms
Current (calculated) : 232 mAmps
Current (measured): ~100 mAmps