Turbines for KidWind Competition

For the past few weeks, my partner and I worked on a turbine for an online competition called KidWind.  Every month they pick a turbine they like, and the students from that school get $100 for their school.  We designed the blades for our turbine, mounted them to a hub, and measured it's voltage.  Our team name is Something Clever 2.0 (because we messed up the description on our first one) and we measured 1.07 volts of energy with a 100 resistor value.  We used turbine generator B1 from KidWind.org, and our wind speed was 4 meters per second.  A picture of our turbine:

Our inspiration for this blade design was partly given to us by the leaves outside, and the blades on the fan we were using for our test dummy turbines.  We used a strong cardboard-like material that catches enough wind to produce 1.07 volts of energy and does not weigh it down too much.  We also colored it.

Overall I think this project was relatively interesting and a bit useful if we want to be turbine mechanics.  It taught us about how motors work and some basic electricity and power-generating.

Electricity Quiz and Circuit Board

For the past couple of weeks in Tech Ed class, we worked on two things. An Electricity Quiz was one of them.  With with wires on the backside of the piece of cardboard it was on, so that when we connected a battery and a small lightbulb to the snaps on the front, the light would light up completing the circuit.

[front]

[back]

As you can see, the wires were first attached to the question on the right hand side column, and then the ran to the back of the answer on the left side column.  If we complete the circuit with a battery and a lightbulb, the lightbulb will light up if you connected the right answer to the question.

We also worked on a circuit board.  Everyone in the class chose a baggy with different components to the circuit board inside.  I happened to choose a decision maker.  Inside the bag was the board itself, four different resistors, a green LED light, a red LED light, a switch, and three or four other things that I can't remember the name of.  When I put it all together, it looked like this:

[front]

We attached the components of the circuit board with solder.  To solder the pieces to the board, we used a tool that was about 500-750 degrees at the tip and it melted the solder on contact.  The back of the board looked like this:

[back]

Once we turned it on and connected a battery to the end of the red and black wires and complete the circuit, you could press the button (the big black square in the center) either the green light or the red light would light up, indicating 'yes' or 'no'.

Through out these past few weeks we were taught how to solder, build a circuit correctly, and build a circuit board and be able to get a general idea of what each part does.

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