The Arduino Uno is a microcontroller board based on the ATmega328.
- Used for communications and networking
- Perfect for advanced programming use
- Microcontroller Atmel ATmega328
- Operating voltage of 5 V
- Maximum supply voltage 6 to 20 V
- Digital I/O pins 14 (of which 6 provide PWM output)
- DC current per I/O pin 40 mA
- DC current for 3.3 V pin 50 mA
- Flash memory 32 KB of which 0.5 KB is used by boot loader
- SRAM 2 KB, EEPROM 1KB
- Clock speed 16 MHz
- Can be powered via the USB connection or with an external power supply
This board has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz ceramic resonator, 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. The Uno differs from all preceding boards in that it does not use the FTDI USB-to-serial driver chip. Instead, it features the Atmega16U2 (Atmega8U2 up to version R2) programmed as a USB-to-serial converter.
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