This book was written by Michael Margolis with Nick Weldin to help you explore the
amazing things you can do with Arduino.
Arduino is a family of microcontrollers (tiny computers) and a software creation envi-
ronment that makes it easy for you to create programs (called sketches) that can interact
with the physical world. Things you make with Arduino can sense and respond to
touch, sound, position, heat, and light. This type of technology, often referred to as
physical computing, is used in all kinds of things, from the iPhone to automobile elec-
tronics systems. Arduino makes it possible for anyone—even people with no program-
ming or electronics experience—to use this rich and complex technology.
FFeeaattuurreess ? Input voltage range: 2.2 to 6V ? Programmable LED Current ? Drives LEDs Up to 27V ? Switching Frequency：up to 800KHz ? Wide dimming frequency range: 20KHz~ 360 KHz ? Programmable Overvoltage Protection ? Tiny SOP8/PP Package
The PW5200A/ PW5200C is high efficiency synchronous, PWM step-up DC/DC converters optimizedto provide a high efficient solution to medium power systems. The devices work with a 1.4MHz fixedfrequency switching. These features minimize overall solution footprint by allowing the use of tiny,low profile inductors and ceramic capacitors. Automatic PWM/PFM mode switching at light loadsaves power and improves efficiency
Datasheet SHT3x-DISHumidity and Temperature Sensor? Fully calibrated, linearized, and temperaturecompensated digital output? Wide supply voltage range, from 2.4 V to 5.5 V? I2C Interface with communication speeds up to 1MHz and two user selectable addresses? Typical accuracy of ? 2 %RH and ? 0.3 °C? Very fast start-up and measurement time? Tiny 8-Pin DFN package
