• sales

    +86-0755-88291180

Arduino Uno R3 Hardware Reference

In the Arduino development board family, the Uno development board is the most beginner-friendly Arduino development board. Because it is easy to learn, stable and reliable, the Uno development board is also the most widely used development board with the most reference materials.

Arduino Uno is a development board based on microcontroller ATmega328P. It has 14 digital input/output pins (6 of these pins can be used as PWM output pins), 6 analog input pins, 16 MHz quartz crystal oscillator, USB interface, power interface, supports in-circuit serial Programming and reset buttons. Users only need to connect the development board to the computer through the USB interface to use it.

If you choose the Arduino clone board, you can learn how to install the driver for the Arduino clone board through our tutorial.

The main technical parameters

Microcontroller: ATmega328P
Working voltage: 5 volts
Input voltage (recommended) : 7-12 volts
Input voltage (limit) : 6-20 volts
Digital input and output pins: 14 (6 of which can be used as PWM pins)
PWM pins: 6
Analog input pins: 6
Input/Output Pin DC Current : 20mA
3.3V pin current: 50 mA
Flash Memory (flash memory): 32 KB (ATmega328P) of which 0.5 KB is used for system boot (bootloader)
SRAM (static memory): 2 KB (ATmega328P)
EEPROM: 1KB (ATmega328P)
Built-in LED pins: 13
Length: 68.6mm
Width: 53.4mm
Weight : 25g
Clock frequency: 16MHz

Pin Description Diagram


TAG: MPTPU Raspberry Pi 5 TPU AI Kit 2TOPS PCIe to TPU HAT Pi5 For Google Coral Edge TPU PC USB Monitor Screen USB to I2C Raspberry Pi 5 8mp Camera pcb800099-v.9 Raspberry Pi 12.3 inch HDMI LCD Captive TouchScreen Display 1920x720 For Jetson Series/Computer PC Raspberry Pi Secondary Screen Raspberry Pi 5 Audio IO BASE MINI Board Raspberry Pi Pico Screen 7.5 inch Passive NFC e-Paper BW Display 7.5inch E-ink Screen No Need Battery Wireless Powered Data Transfer Bus Servo Adapter A Sipeed NanoCluster Mini Cluster Board mini data center For Raspberry Pi CM45 / Computer /LM3H /M4N Raspberry Pi 5 Case ESP32 Thermal imaging Arduino IR Thermal Imaging Camera Gripper Serial Robotic Arm Gripper Mechanical claw Serial Bus Servo ST3215/CF35-12 Raspberry Pi USB Camera 12MP IMX378 30fps onboard dual microphones Also For Jeston / RDK ESP32 Thermal imaging camera ESP32 MLX90640