Arduino UNO Pinout Diagram

Arduino UNO is a popular open-source microcontroller board based on the ATmega328P. It is widely used for various DIY electronics and robotics projects due to its ease of use, compatibility with a wide range of components and sensors, and affordable price. The board features 14 digital input/output pins, 6 analog inputs, a 16 MHz quartz crystal, and a USB connection for programming and power. The Arduino UNO pinout diagram is widely available and allows users to easily connect and control various components. Some of the key features of the Arduino UNO include support for C and C++ programming languages, a large and active user community, and compatibility with most Arduino shields and sensors. With its versatile capabilities, the Arduino UNO is a great choice for anyone looking to get started with electronics and microcontroller programming.

Here we are showing a highly detailed Arduino UNO pinout diagram and lots of general information about the board such as features, uses, advantages and applications.

Arduino UNO Pinout Diagram:

Arduino UNO Pinout Diagram


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Features of Arduino UNO:

1.MicrocontrollerATmega328P8-bit AVR RISC-based
2.Operating Voltage5VDC supply voltage
3.Input Voltage7-12VExternal voltage (recommended)
4.Digital I/O Pins146 of them provide PWM output
5.Analog Input Pins610-bit resolution ADC
6.Clock Speed16 MHzQuartz crystal oscillator
7.Flash Memory32 KB0.5 KB used by bootloader
8.SRAM2 KBDynamic memory for data storage
9.EEPROM1 KBNon-volatile memory for storing data
10.PinoutStandard 0.1″ DIPCompatible with most shields and sensors
11.Programming SoftwareArduino Integrated Development Environment (IDE)Supports C and C++ programming languages
12.ConnectivityUSBUSB connection for programming and power
13.Weight25 gLightweight and easy to use
14.Dimensions68.6 x 53.4 x 27 mmCompact design
15.Current per I/O Pin40 mAMaximum current per pin
16.Power Consumption20 mALow power consumption
17.Serial CommunicationUART, SPI, I2CSupports multiple communication protocols
18.Interrupts2External and Pin Change Interrupts
19.DebuggingIn-circuit serial programming (ICSP) headerSupports debugging and programming
20.Operating Temperature-40 to 85 °CWide operating temperature range
21.Operating SystemNoneStandalone operation
22.Expansion Shield CompatibilityYesCompatible with most Arduino shields
23.Power JackYesAccepts a barrel-type power plug
24.Reset ButtonYesResets the microcontroller
25.On-board LEDYesIndicates power and data transfer activity
26.ADC Resolution10-Bit0-1023 range for analog input readings
27.PWM Channels6Provides pulse-width modulation outputs
28.UART Channels1Supports serial communication
29.SPI Channels1Supports serial peripheral interface communication
30.I2C Channels1Supports inter-integrated circuit communication

Physical Characteristics of Arduino UNO:

  • Compact design with dimensions of 68.6 x 53.4 x 27 mm
  • Lightweight, with a weight of 25 g
  • Standard 0.1″ DIP pinout for compatibility with most shields and sensors
  • On-board LED to indicate power and data transfer activity
  • Reset button to reset the microcontroller
  • Power jack for accepting a barrel-type power plug

Electrical Characteristics of Arduino UNO:

  • Operating voltage of 5V DC
  • Input voltage of 7-12V (recommended)
  • Maximum current per pin of 40 mA
  • Low power consumption of 20 mA
  • Quartz crystal oscillator with a clock speed of 16 MHz
  • Supports multiple communication protocols including UART, SPI, and I2C
  • In-circuit serial programming (ICSP) header for debugging and programming
  • Wide operating temperature range of -40 to 85 °C

Uses of Arduino UNO:

  • Robotics and automation projects
  • Home automation and control systems
  • Internet of Things (IoT) applications
  • Prototyping and testing electronic circuits
  • Education and learning about electronics and programming

Advantages of Arduino UNO:

  • Easy to use and beginner-friendly
  • Open-source and community-driven, with a large user base and extensive documentation
  • Compatible with most Arduino shields and sensors
  • Supports C and C++ programming languages
  • Affordable and readily available

Applications of Arduino UNO:

  • Automated lighting systems
  • Weather monitoring and data collection
  • Remote control systems
  • Motion detectors and alarm systems
  • Games and interactive displays
  • Measuring and monitoring temperature, humidity, and other environmental factors
  • Controlling motors and servo motors
  • Sensing and controlling humidity and water levels
  • Automated plant and garden watering systems