- TWI: SDA and SCL pins that are near to the AREF pin.
- IOREF: allows an attached shield with the proper configuration to adapt to the voltage provided by the board. This enables shield compatibility with a 3.3V board like the Due and AVR-based boards which operate at 5V.
- An unconnected pin, reserved for future use.
Arduino Mega 2560 (Compatible) + Free CableSpecial Price Rs 823.64 Rs 698.00 was Rs 1,003.00ESP8266 ESP-12E UART WIFI Wireless Shield Dev Board for Arduino UNO R3Rs 1,170.56 Rs 992.00
Arduino Nano Compatible Ultimate Starter KitSpecial Price Rs 873.20 Rs 740.00 was Rs 1,254.34CNC Shield + UNO R3 + 4xDRV8825 Driver KitSpecial Price Rs 1,184.72 Rs 1,004.00 was Rs 1,778.26
Arduino UNO Kit for Robotic ProjectsRs 811.84 Rs 688.00Arduino Uno OriginalSpecial Price Rs 1,597.72 Rs 1,354.00 was Rs 2,762.38
|Analog I/O Pins||
Input-12 /Output-2 (DAC)
|DC Current per I/O Pin||
130 mA, DC Current for 3.3V Pin: 800 mA, DC Current for 5V Pin: 800 mA
|Digital I/O Pins||
54 (of which 12 provide PWM output)
512 KB all available for the user applications
96 KB (two banks: 64KB and 32KB)
|Dimensions (mm) LxWxH||
104 x 53 x 15
15 × 7 × 4 cm