FEATURES:
 
A basic i/o board and a development environment that uses the Processing/Wiring language constitute the foundation of the open-source Arduino physical computing platform. Arduino can be used to create interactive stand-alone items or to interface with computer software (such as Processing or Flash). For Mac OS X, Windows, and Linux, the open-source IDE is now available for free download.
 
SPECIFICATIONS:
 
Analog and Digital I/O Pins:
Analog Input Pins: 6 (these are used to measure analog signals, ranging from 0 to 5V).
Digital I/O Pins: 14, of which 6 provide PWM output for simulating analog signals (pins 3, 5, 6, 9, 10, 11).
 
Voltage and Power:
Input Voltage (Limits): 6-20V (range that the board can safely handle).
Input Voltage (Recommended): 7-12V (ideal range for stability and safety).
Operating Voltage: 5V (the board itself runs at 5V).
 
Microcontroller and Memory:
Microcontroller: ATmega328.
Clock Speed: 16 MHz (determines the speed of the microcontroller).
EEPROM: 1 KB (non-volatile memory for storing data).
SRAM: 2 KB (volatile memory used by the program during runtime).
Flash Memory: 32 KB (program storage), with 0.5 KB used by the bootloader.
 
Current Limits:
I/O Pin:
Recommended: 35 mA per pin (max 40 mA per pin, but exceeding 40 mA may damage the pin).
Total for All Pins: 200 mA max (for all pins combined).
 
3.3V Pin:
Provides 150 mA max, but power drawn from this pin goes through the 5V pin, so it affects the overall power budget for the board.
 
5V Pin:
USB Power: 400 mA max.
External Power (via DC jack): 900 mA max (depending on the input voltage, as higher voltage reduces the available current due to thermal limitations).
 
PACKAGING LIST:
 
1 x ARDUINO UNO R3