Matthew's Week 12

Blog sheet Week 12:

This week’s blog sheet will be individual but you will post it on your group blog.

Your individual Rube Goldberg (RG) setup should satisfy the following:

1.     Use at least 2 of the following components:

a.     Transistor

b.     OPAMP

c.     Relay

d.     Temperature sensor

e.     Photosensor

f.      Motor

g.     Display

h.     Strain gauge

i.      Speaker

j.      Microphone

k.     Solar panel

2.     Use a new circuit: It can be a modification to one of our lab circuits.

3.     Let your system complete its task in no shorter than 10 seconds.

4.     Make sure you are compatible with your preceding and following RG stage.

Your blogsheet 12 tasks:

1.     Provide the computer drawing for your individual RG setup.

2.     Explain your setup.

        I.            There will be one bread board with a photocell on it, when I shine the bat light on the photo cell the motor will turn. When the motor turns it will pull the release for batman to come to the rescue.

      II.            When Batman hits the switch, the switch will turn on the hair dryer.

    III.            The hair dryer will heat the temp sensor. Once the temp sensor is warm it will engage a relay.

    IV.            Once the relay is engaged it will turn on the LED light strip activating Yao’s photocell.

3.     Provide photos of the circuit and setup.

4.     Provide at least 2 videos of your setup in action, one being a failed attempt.

Photo Cell circuit

Video 1 Showing the operation of photocell

Video 2 Temp sensor and op-amp not working
















Video 3 Circuit working


Video 4 Testing hair dryer and switch

5.     What failures did you have? How did you overcome them?

Things I struggled with were getting the transistor to engage the relay. The first issue I had was that the first transistor I used was bad. Once I got a new transistor I struggled to find the right voltage to apply to the collector. I also struggled to get set my op-amp up correctly. Once I made all the proper connection it worked smooth.