June 2016
Intermediate to advanced
272 pages
5h 4m
English
Content preview from Arduino Project Handbook
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Project 18: Intruder Sensor
In this project, we’ll use an ultrasonic sensor to detect an intruder.
PARTS REQUIRED
• Arduino board
• Breadboard
• Jumper wires
• Four-pin HC-SR04 ultrasonic sensor
• Servomotor
• Red LED
• Green LED
• 2 220-ohm resistors
We’ll connect the intruder sensor to a servo and some LEDs so that when someone comes within a certain distance, a green LED turns off, a red LED turns on, and the servomotor moves (see Figure 18-1).
FIGURE 18-1:The LEDs alert you to an intruder.
HOW IT WORKS
This project is versatile and can be ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.