Arduino Uno is a microcontroller board based on the ATmega328P. It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz quartz crystal, a USB connection, a power jack, an ICSP header and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get started.
Features
Open the original schematic design, free development software interface download, also allow your needs to be modified, easy and convenient to download the program.
Can simply use sensors, all kinds of electronic components connection (such as LED lights, buzzer, buttons and photosensitive resistance, etc.), make all sorts of interesting work.
Using high-speed microprocessor controller (ATMEGA328), development interface and environment are all very simple, easy to understand, very suitable for beginners to learn.
This or raspberry pi?