Learn to quickly build your own electronic gadgets that monitor, measure, and react to the real world--with no prior experience required! This easy-to-follow guide covers the programming and electronics essentials needed to build fun and educational sensor-based projects with both Arduino and Raspberry Pi. features step-by-step DIY projects that use inexpensive, readily available parts. You will discover how to use touch, temperature, moisture, light, sound, and motion sensors--even sensors that detect the presence of a human! include: - "Simon Says" game - Rotary encoder that controls an RGB LED - Reed switch door buzzer alarm - Fire alarm - Sound detector - Light clapper - Glass break alarm - Infrared motion detector - Distance sensor intruder alarm - Collision alarm - TFT color display screen - Door entry alarm with SD card logging - And many more