Some famous equations
- Ohm’s law — V = I R
- Resistors in series — R = R1 + R2
- Resistors in parallel — 1/R = 1/R1 + 1/R2
For more information, read Chapters 5 and 6 of Electronics for Dummies by Cathleen Shamieh. This is available on-line from the UNC Asheville library.
Let’s experiment with our breadboards and a multimeter.
Input
We’ve already done the digital inputs, let’s go on with the analog ones.
- Button
- Switch
- Potentiometer
- Printing analog value
- Photo resistors — pitch follower under Digital
Some good electronics tutorials
Both SparkFun and Adafruit have good tutorials on basic electronics.
Here is long list of useful tutorials from SparkFun.
- Voltage, Current, Resistance, and Ohm’s Law
- Resistors
- Light-Emitting Diodes (LEDs)
- How to Use a Breadboard
- Analog vs Digital
- Binary
- How to Read a Schematic
- Photocell Hookup Guide
- Transistors
Here are some longer electronic tutorials.
- Electricity: the Basics by Tom Igoe
- Arduio at Lynda
If you like tutorials with talking oscilloscopes, Circuit Playground is the place for you.