This second volume of the Arduino Project Handbook delivers 25 more beginner-friendly electronics projects. Get up and running with a crash course on the Arduino, and then pick any project that sparks your interest and start making!

Each project includes cost and time estimates, simple instructions, colorful photos and circuit diagrams, a troubleshooting section, and the complete code to bring your build to life. With just the Arduino board and a handful of components, you’ll make gadgets like a rainbow light display, noise-level meter, digital piano, GPS speedometer, and fingerprint scanner.

This collection of projects is a fast and fun way to get started with microcontrollers that’s perfect for beginners, hobbyists, parents, and educators.

25 Step-by-Step Projects

LED Light Bar
Light-Activated Night-Light
Seven-Segment LED Countdown Timer
LED Scrolling Marquee
Mood Light
Rainbow Strip Light
NeoPixel Compass
Arduino Piano
Audio LED Visualizer
Old-School Analog Dial
Stepper Motor
Temperature-Controlled Fan
Ultrasonic Range Finder
Digital Thermometer
Bomb Decoder Game
Serial LCD Screen
Ultrasonic People Counter
Nokia 5110 LCD Screen Pong Game
OLED Breathalyzer
Ultrasonic Soaker
Fingerprint Scanner
Ultrasonic Robot
Internet-Controlled LED
Voice-Controlled LED
GPS Speedometer

Uses the Arduino Uno board