Homework 3

Homework 3

Part 1)
https://drive.google.com/file/d/0B8ZGdT5f3eJkc0VOSkVHZy1XQWc/view?usp=sharing
This tech can allow wheel chairs to recognize when a person is sitting properly on the seat or has fallen off and may be in danger.
It can also be used to measure the strength of a persons pulse to recognize when it is weaker than normal based on fluctuations read on the force sensitive resistor.

Part 2)
https://drive.google.com/file/d/0B8ZGdT5f3eJkNHhfZWJydVZzMzQ/view?usp=sharing

Voltage is not divided here because max voltage is only 2 Volts.

The designs using this sensor cannot take part in any quick reactive physical computing. Rather, it is more useful at making slow gradual adjustments, like adjusting flame in an oven based on the temperature.

One way to use this is to adjust light in a sunbathing capsule based on temperature.
Another way is to use these in fire detectors. When temperature hits a certain level that is dangerous, the fire alarm should sound.

Part 3)
https://drive.google.com/file/d/0B8ZGdT5f3eJkdWxMcjRJNi15bWM/view?usp=sharing

Current going through the switch LED is limited by a 10kOhm resistor whereas the other LED is limited only by a 560Ohm resistor.

Current through the switch LED is 5/10000=.0005 Amps whereas current through the other LED is 5/560=.009 Amps

Part 4)
https://drive.google.com/file/d/0B8ZGdT5f3eJkUlJ1TFFadmNLXzA/view?usp=sharing

Sensitivity is much greater when the potentiometer resistance is turned to a minimum.

Part 5)
https://drive.google.com/file/d/0B8ZGdT5f3eJkOC0wYUZDcWdnMEE/view?usp=sharing

https://drive.google.com/file/d/0B8ZGdT5f3eJkb3hCUDlUdHdDaEE/view?usp=sharing