Product details
Arduino UNO R3 Original
The Arduino Uno R3 is a microcontroller board based on the ATmega328P chip and is widely recognized as the best original Arduino Uno board for beginners and projects.
This board has 14 digital I/O pins (6 support PWM), 6 analog inputs, a 16 MHz crystal resonator, a USB connector, a power jack, an ICSP header, and a reset button. You may quickly charge it with a USB cable, adapter, or battery.
The Uno R3 is designed for both students and enthusiasts and makes electronics and coding accessible without requiring extensive technical knowledge. As part of the Arduino Uno Rev3 original specifications and features, it delivers a reliable and easy-to-use development platform.
This Arduino UNO microcontroller board can be programmed using the Arduino IDE, which allows users to build sketches (code) that control the board. Even if something goes wrong, simply change the chip and restart.
"Uno" means "one" in Italian, and it marks the release of the Arduino IDE 1.0. It became the standard and reference model for subsequent Arduino boards.
Common uses of the Arduino Uno board include home automation, industrial control, and DIY electronics projects. The Arduino Uno ATmega328P original board for robotics IoT and automation is especially popular among students and engineers building smart systems.
It can also interface with other Arduino boards or Raspberry Pi, making it a flexible choice for creators and students. When comparing Arduino Uno original price in India, this board offers excellent value considering its durability, ecosystem, and support.
Check out the original Arduino UNO R4 WiFi!
Read our blog IR sensor Arduino code for interfacing IR sensor module with Arduino.
Browse the best collection of original Arduino products.
Key Features
• ATmega328P microcontroller ensures reliable and efficient performance
• Includes 14 digital input/output pins, with 6 supporting PWM output
• Features 6 analog input pins for reading sensor or variable data
• Equipped with a 16 MHz ceramic resonator for stable timing
• Offers 32 KB flash memory (0.5 KB used by bootloader), 2 KB SRAM, and 1 KB EEPROM
• Can be powered via USB, DC adapter (7–12V recommended), or battery
• Integrated USB-to-serial communication using ATmega16U2 for easy programming
• Built-in resettable polyfuse provides protection against USB overcurrent
• Supports automatic reset for quick and easy code uploads
• Includes an onboard LED on digital pin 13 for basic testing
• Supports serial (UART), SPI, and I2C communication protocols
• Compatible with a wide range of Arduino shields for project expansion
• Easy to use, making it perfect for beginners and DIY electronics enthusiasts
• Designed under Arduino Uno Rev3 original specifications and features for consistency and performance
• Perfect Arduino Uno ATmega328P original board for robotics IoT and automation applications
Arduino UNO Pin Diagram
The power pins are as follows:
Pin
Description
Vin
The input voltage to the Arduino board when using an external power source (7–12V). You can supply voltage through this pin, or access it if supplying voltage via the DC power jack.
5V
Outputs a regulated 5V from the onboard regulator. Power can come from the USB, DC jack, or Vin pin. Do not supply power to this pin directly, as it bypasses the regulator.
3.3V
Outputs 3.3 volts generated by the onboard regulator. Maximum current draw is 50 mA.
GND
Ground pins used to complete the circuit. Multiple GND pins are available.
IOREF
Provides the voltage reference at which the microcontroller operates. Shields can use this pin to adapt to the board’s voltage (5V or 3.3V).
Explore a wide range of Original Arduino Boards on Robocraze.
Why Choose Arduino Uno R3?
•
Beginner-friendly: Easy to use with a simple IDE and beginner-level coding language, making it the best original Arduino Uno board for beginners and projects.
•
Strong community support: Large global community, tutorials, and troubleshooting help available.
•
Wide ecosystem: Compatible with a variety of shields, sensors, and modules, aligning with Arduino Uno Rev3 original specifications and features.
•
Affordable: Considering the Arduino Uno original price in India, it remains a budget-friendly option for students, hobbyists, and professionals.
•
Highly versatile: Suitable for everything from basic LED control to advanced IoT systems using the Arduino Uno ATmega328P original board for robotics IoT and automation.
•
Reliable starting point: Best entry-level board before exploring advanced Arduino models.
•
Open-source platform: Hardware and software are fully open-source, allowing customization and innovation.
•
Stable performance: Offers consistent and reliable operation for long-term learning and prototyping.
•
Easy availability: You can easily buy Arduino Uno original board online India official through trusted platforms like Robocraze.
Arduino Nano vs Uno Comparison Table
Feature
Arduino UNO R3 (Original)
Arduino Nano (Original)
Price (Robocraze)
?1,860
?1,798 VIEW
Microcontroller
ATmega328P
ATmega328P
Operating Voltage
5V
5V
Input Voltage
7-12V
7-12V
Digital I/O Pins
14 (6 PWM)
14 (6 PWM)
Analog Input Pins
6
8
Clock Speed
16 MHz
16 MHz
Flash Memory
32 KB (0.5 KB used by bootloader)
32 KB (0.5 KB used by bootloader)
SRAM
2 KB
2 KB
EEPROM
1 KB
1 KB
USB Interface
Standard USB Type-B
Mini USB
Size
Larger (approx. 68.6mm x 53.4mm)
Compact (approx. 45mm x 18mm)
Best for
Beginners, shields, projects needing standard size
Compact projects, breadboard-friendly applications
Wireless Capability
Needs external module (e.g., ESP8266, HC-05)
Needs external module (e.g., ESP8266, HC-05)
Expandable with Shields
Yes, compatible with multiple shields
Limited due to size constraints
Project Ideas with Arduino Uno R3
• LED Blinking Project
• Temperature & Humidity Monitor
• Smart Home Automation
• Obstacle-Avoiding Robot
• Automatic Plant Watering System
• Digital Thermometer
• Motion Detector Alarm
• IoT Weather Station
• RFID Door Lock System
• Line Follower Robot
• Smart Parking System
• Bluetooth-Controlled Car
• Light Follower Robot
• Heart Rate Monitor
• Home Security System
Know How to Install Arduino IDE on Windows, Mac & Linux - Click HERE!
The Arduino Uno R3 is a microcontroller board based on the ATmega328P chip and is widely recognized as the best original Arduino Uno board for beginners and projects.
This board has 14 digital I/O pins (6 support PWM), 6 analog inputs, a 16 MHz crystal resonator, a USB connector, a power jack, an ICSP header, and a reset button. You may quickly charge it with a USB cable, adapter, or battery.
The Uno R3 is designed for both students and enthusiasts and makes electronics and coding accessible without requiring extensive technical knowledge. As part of the Arduino Uno Rev3 original specifications and features, it delivers a reliable and easy-to-use development platform.
This Arduino UNO microcontroller board can be programmed using the Arduino IDE, which allows users to build sketches (code) that control the board. Even if something goes wrong, simply change the chip and restart.
"Uno" means "one" in Italian, and it marks the release of the Arduino IDE 1.0. It became the standard and reference model for subsequent Arduino boards.
Common uses of the Arduino Uno board include home automation, industrial control, and DIY electronics projects. The Arduino Uno ATmega328P original board for robotics IoT and automation is especially popular among students and engineers building smart systems.
It can also interface with other Arduino boards or Raspberry Pi, making it a flexible choice for creators and students. When comparing Arduino Uno original price in India, this board offers excellent value considering its durability, ecosystem, and support.
Check out the original Arduino UNO R4 WiFi!
Read our blog IR sensor Arduino code for interfacing IR sensor module with Arduino.
Browse the best collection of original Arduino products.
Key Features
• ATmega328P microcontroller ensures reliable and efficient performance
• Includes 14 digital input/output pins, with 6 supporting PWM output
• Features 6 analog input pins for reading sensor or variable data
• Equipped with a 16 MHz ceramic resonator for stable timing
• Offers 32 KB flash memory (0.5 KB used by bootloader), 2 KB SRAM, and 1 KB EEPROM
• Can be powered via USB, DC adapter (7–12V recommended), or battery
• Integrated USB-to-serial communication using ATmega16U2 for easy programming
• Built-in resettable polyfuse provides protection against USB overcurrent
• Supports automatic reset for quick and easy code uploads
• Includes an onboard LED on digital pin 13 for basic testing
• Supports serial (UART), SPI, and I2C communication protocols
• Compatible with a wide range of Arduino shields for project expansion
• Easy to use, making it perfect for beginners and DIY electronics enthusiasts
• Designed under Arduino Uno Rev3 original specifications and features for consistency and performance
• Perfect Arduino Uno ATmega328P original board for robotics IoT and automation applications
Arduino UNO Pin Diagram
The power pins are as follows:
Pin
Description
Vin
The input voltage to the Arduino board when using an external power source (7–12V). You can supply voltage through this pin, or access it if supplying voltage via the DC power jack.
5V
Outputs a regulated 5V from the onboard regulator. Power can come from the USB, DC jack, or Vin pin. Do not supply power to this pin directly, as it bypasses the regulator.
3.3V
Outputs 3.3 volts generated by the onboard regulator. Maximum current draw is 50 mA.
GND
Ground pins used to complete the circuit. Multiple GND pins are available.
IOREF
Provides the voltage reference at which the microcontroller operates. Shields can use this pin to adapt to the board’s voltage (5V or 3.3V).
Explore a wide range of Original Arduino Boards on Robocraze.
Why Choose Arduino Uno R3?
•
Beginner-friendly: Easy to use with a simple IDE and beginner-level coding language, making it the best original Arduino Uno board for beginners and projects.
•
Strong community support: Large global community, tutorials, and troubleshooting help available.
•
Wide ecosystem: Compatible with a variety of shields, sensors, and modules, aligning with Arduino Uno Rev3 original specifications and features.
•
Affordable: Considering the Arduino Uno original price in India, it remains a budget-friendly option for students, hobbyists, and professionals.
•
Highly versatile: Suitable for everything from basic LED control to advanced IoT systems using the Arduino Uno ATmega328P original board for robotics IoT and automation.
•
Reliable starting point: Best entry-level board before exploring advanced Arduino models.
•
Open-source platform: Hardware and software are fully open-source, allowing customization and innovation.
•
Stable performance: Offers consistent and reliable operation for long-term learning and prototyping.
•
Easy availability: You can easily buy Arduino Uno original board online India official through trusted platforms like Robocraze.
Arduino Nano vs Uno Comparison Table
Feature
Arduino UNO R3 (Original)
Arduino Nano (Original)
Price (Robocraze)
?1,860
?1,798 VIEW
Microcontroller
ATmega328P
ATmega328P
Operating Voltage
5V
5V
Input Voltage
7-12V
7-12V
Digital I/O Pins
14 (6 PWM)
14 (6 PWM)
Analog Input Pins
6
8
Clock Speed
16 MHz
16 MHz
Flash Memory
32 KB (0.5 KB used by bootloader)
32 KB (0.5 KB used by bootloader)
SRAM
2 KB
2 KB
EEPROM
1 KB
1 KB
USB Interface
Standard USB Type-B
Mini USB
Size
Larger (approx. 68.6mm x 53.4mm)
Compact (approx. 45mm x 18mm)
Best for
Beginners, shields, projects needing standard size
Compact projects, breadboard-friendly applications
Wireless Capability
Needs external module (e.g., ESP8266, HC-05)
Needs external module (e.g., ESP8266, HC-05)
Expandable with Shields
Yes, compatible with multiple shields
Limited due to size constraints
Project Ideas with Arduino Uno R3
• LED Blinking Project
• Temperature & Humidity Monitor
• Smart Home Automation
• Obstacle-Avoiding Robot
• Automatic Plant Watering System
• Digital Thermometer
• Motion Detector Alarm
• IoT Weather Station
• RFID Door Lock System
• Line Follower Robot
• Smart Parking System
• Bluetooth-Controlled Car
• Light Follower Robot
• Heart Rate Monitor
• Home Security System
Know How to Install Arduino IDE on Windows, Mac & Linux - Click HERE!
