UNO R3 ATmega328P Development Board + 2 Channels Relay + Free US x 4
Availability: In Stock
The Uno R3 is a microcontroller board based on the ATmega328 . It 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.
Revision 3 of the board has the following new features:
- 1.0 pinout: added SDA and SCL pins that are near to the AREF pin and two other new pins placed near to the RESET pin, the IOREF that allow the shields to adapt to the voltage provided from the board. In future, shields will be compatible with both the board that uses the AVR, which operates with 5V and with the Due that operates with 3.3V. The second one is a not connected pin, that is reserved for future purposes.
- Stronger RESET circuit.
- Atmega 16U2 replace the 8U2.
Input Voltage (recommended)
Input Voltage (limits)
Digital I/O Pins
14 (of which 6 provide PWM output)
Analog Input Pins
DC Current per I/O Pin
DC Current for 3.3V Pin
32 KB (ATmega328) of which 0.5 KB used by bootloader
2 KB (ATmega328)
1 KB (ATmega328)
- 1X UNO R3
- 1X Free USB cable
- 1X 2 Channels Relay (Free gift)