Microcontroller Atmega328
Operating Voltage 5V
Input Voltage( recommended ) 7-12v
lnput Voltage ( imits ) 6-20v
Digital 1 / O Pins 14 ( of which 6 provide PWM output )
Analog Input Pins 6
DC Current per l/ O Pin 40 MA
DC Current for 3 .3V Pin 50 MA

Flash Memory 32 KB ( Atmega328 ) of which 0.5 KB used by bootloader
SRAM 2 KB(Atmega328)
EEPROM 1 KB ( Atmega328 )
Clock Speed 16 MHz

UNO is a Simple ilo platform based on open source code, and it has thecharacteristicsof easy to understand using Processing/Wiring developmentenvironment similar toJava and C language.Let you quickly use uno to make interesting things. Uno can beused with some electronic components such asLED lights, buzzers, keys, photoresistorsand so on.The uno development environment interface is based on the open sourceprinciple,allowing you todownload,use and develop more amazing interactive worksfor free.Open thecircuit diagram of the original design, develop software interface forfreedownload, but also according to the needs of their own modification,downloadprocedures are simple and convenient. lt can simply use sensors andvariouselectronic components to connect (e.g.LED lights, buzzers, keys,photoresistors.etc.) to make a variety of interesting works. Using high-speedmicroprocessor controller(ATMEGA328), the development of operationinterface and environment is very simpleand easy to understand, which isvery suitable for beginners to learn.