Today was transistor day in Physical Computing. Well, not exactly, but we did learn a lot about transistors. Below are the lessons/projects we worked on in class.
1. We each made a circuit with two LEDs & one button, powered by a 9 volt battery. When one LED is lit, the other is dark. When the button is pressed, the lit LED goes dark and the dark LED gets lit. Make sense?
Here’s a Picture of the circuit.
… and a video of it in action.
No Arduino! from Tami on Vimeo.
2. We then learned how to light a mass of LEDs at once. We used this tool to visualize the posible circuits, and then we built it.
Here is a schematic of the circuit.
… and the built circuit.
3. Finally, we hooked up an Arduino to our circuit in order to make the lights blink and fade. With simple tutorial code, below is what we came up with.
Blink
Blink LEDs from Tami on Vimeo.
Fade