Chapter 3 A Dark-Detecting Light
Ingredients
- 1 Arduino Uno
- 1 Arduino USB cable
- 1 breadboard
- Your computer
- 1 LED
- 3 jumper wires
- 1 photoresistor (some kits call these a “photocell”)
- 1 10K-ohm (10KΩ) resistor, which has a brown-black-orange stripe pattern
Let’s make our objects just a little smarter by adding the ability to notice changes in the immediate area with a sensor. In this case, we’ll make our blinky bulb respond to the amount of light the sensor “sees.”
Along the way, you’ll learn how easy it is to detect light levels, and about the breadboard—a piece of plastic used to connect electronic parts together without soldering.
Concept: Sensing Light
Light sensors are among the simplest sensors around, and they’re super cheap, too. ...
Get Family Projects for Smart Objects now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
