Sep 13
checking in
Questions about anything?
I've put up a written homework for next Tuesday,
which (a) asks you how things are going, and (b)
asks you to describe what's going on in the LED circuit.
2nd lab
Today : build, test, and explore the second lab : Potentiometer
... in class time to do that ...
... individually or in groups ...
Discuss the circuit:
- What is the current flow and voltages across the pieces?
- How does this work?
- It's possible to change this into two pieces: the LED part, and the potentiometer part. What would that look like?
Discuss the code:
- What is a "variable"?
- Why does the speed of the blinking change?
Variations:
- Can you build it with two LEDs so that one blinks faster while the other blinks slower as you turn the knob?
