My first assignment for Physical Computing is to take a walk around Berry and make note of interesting sensors. Here is what I found…
This PUR Water Filter attaches to my faucet. If I turn the water on, water comes out as normal. If I turn on the water and then flip the black switch, the device displays a green flashing light indicating my water is purified.
This device senses both the temperature and humidity level in my room and displays them accordingly. As you can see, my room is very hot.
There are 2 sensors in this picture. The fire alarm is easy to spot. If I were to pull the lever, a fire alarm would sound along with many flashing lights scattered throughout my dorm building. The other sensor is for easy access through a doorway. If I press it, the door opens for me.
This is another sensor linked with a doorway. This one responds to my Berry student identification card. The light is red right now and the door is locked.. However, if I wave my ID card in front of it, the light turns green and grants me access through the door.
This is my battery powered toothbrush. The battery is being charged right now. I know this because the green light indicator is on.
My electric guitar has many sensors, or “pick-ups” as they are known. They are those groups of 6 magnets underneath my strings. They sense the vibration of my guitar strings when strummed. There must be an electric current running from my amplifier to the sensors of my guitar for any “pick-up” to happen. Also, notice the white switch on the right side of my guitar? This allows me to control which set of sensors (out of three) I want to be active.
Now, your turn. How many sensors do you see on this elevator control board?
I had a lot of fun walking around Berry and my dorm observing and noting many of the sensors. I am amazed at the large number of sensors in the environment I live in. I have always been conscious of the plethora of sensors around me, but thanks to this assignment I now grasp the magnitude.