Arduino Uno R3 Compatible Board The Arduino Uno R3 CH340G ATMEGA328P Development Board is more than just a microcontroller board; it's a gateway to endless possibilities in the world of electronics and programming. Beyond being a microcontroller board, we consider the Arduino UNO R3 development board the reference one. As a microcontroller, this device is finely cut and masterly designed to withstand a variety of circumstances. It typifies new age electronics no matter what you are, say, robotics, IoT, home automation, or creative automation projects; it can gravitate towards the functions that you need. The plug-and-play design, along with a user-friendly interface, makes it easy to use, even for those new to Arduino. Under the hood, it boasts an ATmega328P microcontroller with a CH340G USB-to-serial converter chip, ensuring seamless data transfers and efficient performance. You will even be surprised that this Arduino UNO development board literally speeds up your Arduino projects. Buy the Arduino Uno R3 Original with a warranty – No Clones! check out: Arduino Uno R3 compatible Board ( Pack of 25) Comparison of Arduino Uno Boards: Specification UNO Wifi UNO SMD UNO R3 Microcontroller ATmega4809 ATmega328P (SMD) ATmega328P (Through hole) USB connector Micro-USB USB-B USB-B Digital I/O Pins 14 14 14 Analog input pins 6 6 6 PWM pins 5 6 6 UART Yes Yes Yes I2C Yes Yes Yes SPI Yes Yes Yes I/O Voltage 5V 5V 5V Input voltage (nominal) 7-12V 7-12V 7-12V DC Current per I/O Pin 20mA 20 mA 20 mA Power Supply Connector Barrel Plug Barrel Plug Barrel Plug clock speed 16 MHz 16 MHz 16 MHz USB-Serial chip ATmega16U2 CH340 ATmega16U2 SRAM 6.144KB 2KB 2KB Flash Memory 48KB 32KB 32KB EEPROM 256 Bytes 1KB 1KB Dimensions 68.6 mm x 53.4 mm 68.6 mm x 53.4 mm 68.6 mm x 53.4 mm RADIO MODULE u-blox NINA-W102 - - Inertial Measurement Unit LSM6DS3TR (3D accelerometer) - - LED_BUILTIN 25 13 13 Wi-Fi Microprocessor Yes - - Read our blog smart dustbin project using Arduino detailing Arduino code for making a smart dustbin. Arduino Uno R3 (Original) vs Uno R3 Compatible Board Feature Arduino Uno R3 (Original) Uno R3 Compatible Board Microcontroller ATmega328P ATmega328 Operating Voltage 5V 5V Input Voltage (Recommended) 7–12V 7–12V Digital I/O Pins 14 (6 provide PWM output) 14 Analog Input Pins 6 6 Flash Memory 32KB (0.5KB used by bootloader) 32KB Clock Speed 16MHz 16MHz USB to Serial Converter ATmega16U2 CH340G (may vary by manufacturer) Compatibility Fully compatible with Arduino IDE and official shields Compatible with Arduino IDE and most Uno R3 shields Build Quality Premium PCB and components from Arduino Good quality, more affordable alternative Projects You Can Build with Arduino Uno R3 Compatible Board Smart Home Automation System Line Following Robot Obstacle Avoidance Robot Temperature and Humidity Monitor Bluetooth Controlled Car Motion-Activated Security Alarm Automatic Street Light System Soil Moisture-Based Irrigation System Ultrasonic Distance Measurement Device RFID-Based Door Lock System Digital Thermometer with LCD Display IoT Weather Station Smart Dustbin with Ultrasonic Sensor Home Energy Monitoring System Voice-Controlled Light using Bluetooth Applications: Arduino Music Instrument Robot Car Fingerprint door lock Home Automation Security systems

Transparent Acrylic Case for UNO R3 board The transparent Acrylic Case for the UNO R3 board is of high-grade acrylic, which provides excellent protection. This Arduino case is a unique design that provides an easy connection to other components. The dimension of the enclosure box is the same as the original Arduino Uno R3.

Uno R3 CH340G Development Board with Micro USB port compatible with Arduino The Arduino Uno R3 CH340G ATmega328p Development Board is the low-cost version of the popular Uno R3 Arduino. It is assembled with the CH340 Micro-USB to Serial converter chip, instead of using an Atmega16U2 chip. We have used plenty of these low-cost Arduino boards with CH340 chips, and have found them to work perfectly. The only time the CH340 chip is used is during programming and when using the serial output of the Micro-USB port. During normal operation, this Arduino Uno R3 board is identical to the more expensive version without the CH340 chip. Main changes from the older version: 1. Two rows of holes for the pins (Male and Female). So it can be connected with normal Female Jumpers. 2. Additional 3 rows of the holes for wiring. 3. Changes to the DIP package of ATMEGA328P to flat package. 4. CH340G replace ATmega16U2

Uno R3 Board compatible with Arduino This board is based on and fully compatible with Arduino Uno R3. In addition to all the features of the previous board, the Uno R3 now uses an ATmega16U2 instead of the 8U2 found on the Uno (or the FTDI found on previous generations). This allows for faster transfer rates and more memory. No drivers are needed for Linux or Mac (info file for Windows is needed and included in the Arduino IDE), and the ability to have the Uno show up as a keyboard, mouse, joystick, etc. The Arduino Uno R3 also adds SDA and SCL pins next to the AREF. In addition, there are two new pins placed near the RESET pin. One is the IOREF which allows the Arduino shields to adapt to the voltage provided from the board. The other is not connected and is reserved for future purposes. The Uno R3 works with all existing shields but can adapt to new shields which use these additional pins. If you want to use this Uno R3 Board compatible with Arduino in your small or DIY projects, for that you will need few essential components like Breadboards Jumper wires batteries or power supply BO motors Motor drivers Sensors Comparison of Arduino Uno Boards: Specification UNO Wifi UNO SMD UNO R3 Microcontroller ATmega4809 ATmega328P (SMD) ATmega328P (Through hole) USB connector Micro-USB USB-B USB-B Digital I/O Pins 14 14 14 Analog input pins 6 6 6 PWM pins 5 6 6 UART Yes Yes Yes I2C Yes Yes Yes SPI Yes Yes Yes I/O Voltage 5V 5V 5V Input voltage (nominal) 7-12V 7-12V 7-12V DC Current per I/O Pin 20mA 20 mA 20 mA Power Supply Connector Barrel Plug Barrel Plug Barrel Plug clock speed 16 MHz 16 MHz 16 MHz USB-Serial chip ATmega16U2 CH340 ATmega16U2 SRAM 6.144KB 2KB 2KB Flash Memory 48KB 32KB 32KB EEPROM 256 Bytes 1KB 1KB Dimensions 68.6 mm x 53.4 mm 68.6 mm x 53.4 mm 68.6 mm x 53.4 mm RADIO MODULE u-blox NINA-W102 - - Inertial Measurement Unit LSM6DS3TR (3D accelerometer) - - LED_BUILTIN 25 13 13 Wi-Fi Microprocessor Yes - - APPLICATIONS: Arduino Music Instrument Robot Car Fingerprint door lock Home Automation Security systems

Arduino UNO R3 Original The Arduino Uno R3 is a microcontroller board based on the ATmega328P chip . 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. 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. It can also interface with other Arduino boards or Raspberry Pi, making it a flexible choice for creators and students. 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 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 Iotcart. Why Choose Arduino Uno R3? Beginner-friendly: Easy to use with a simple IDE and beginner-level coding language. Strong community support: Large global community, tutorials, and troubleshooting help available. Wide ecosystem: Compatible with various shields, sensors, and components. Affordable: Budget-friendly option for students, hobbyists, and beginners. Highly versatile: Ideal for projects from basic LED control to complex IoT systems. 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. Arduino Nano vs Uno Comparison Table Feature Arduino UNO R3 (Original) Arduino Nano (Original) Price (Iotcart) ?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 !

Arduino UNO R3 SMD Board Compatible with Arduino One of the new ways into the world of electronic innovation is the SMD Arduino UNO R3 Development Board with Cable. This board is totally different from the Arduino Uno R3. Uno R3 and Uno R3 SMD both boards are based on the ATmega328P Microcontroller but the difference is that the UNO R3 is through-hole version, and this is an SMD version or Surface Mount Device version. A SMD or surface-mount device is an electronic component that is mounted directly onto the surface of a printed circuit board (PCB), rather than being inserted through holes. The board has dimensions of 7 x 5 x 1cm and comes to the fore as a compact and reliable choice for both beginners and experienced electronics enthusiasts. It is designed with 14 digital input/output pins, 6 analog inputs, a 16MHz crystal oscillator, a USB connection, and the CH340G USB to UART Converter Chip, this development board is a perfect match for the electronic prototypes that you want to build with Arduino. This Arduino programming board is a must-have if you're into robotics, IoT, home automation, and security system projects. If your projects are large or small, this Arduino UNO R3 ATmega328P SMD microcontroller brings to you a whole lot of potential and creativity. Buy Genuine Arduino Uno R3 – Best Price! Pin Diagram Comparison of Uno Boards: Specification UNO Wifi UNO SMD UNO R3 Microcontroller ATmega4809 ATmega328P (SMD) ATmega328P (Through hole) USB connector Micro-USB USB-B USB-B Digital I/O Pins 14 14 14 Analog input pins 6 6 6 PWM pins 5 6 6 UART Yes Yes Yes I2C Yes Yes Yes SPI Yes Yes Yes I/O Voltage 5V 5V 5V Input voltage (nominal) 7-12V 7-12V 7-12V DC Current per I/O Pin 20mA 20 mA 20 mA Power Supply Connector Barrel Plug Barrel Plug Barrel Plug clock speed 16 MHz 16 MHz 16 MHz USB-Serial chip ATmega16U2 CH340 ATmega16U2 SRAM 6.144KB 2KB 2KB Flash Memory 48KB 32KB 32KB EEPROM 256 Bytes 1KB 1KB Dimensions 68.6 mm x 53.4 mm 68.6 mm x 53.4 mm 68.6 mm x 53.4 mm RADIO MODULE u-blox NINA-W102 - - Inertial Measurement Unit LSM6DS3TR (3D accelerometer) - - LED_BUILTIN 25 13 13 Wi-Fi Microprocessor Yes - - Why Choose the SMD Version? Compact design allows smaller, space-efficient circuits. Cost-effective due to automated manufacturing and minimal material use. High reliability with better resistance to vibration and mechanical stress. Improved electrical performance with reduced signal loss and interference. Lightweight and ideal for modern compact electronics. Faster production and easier large-scale assembly. Comparison: Original Arduino UNO vs Compatible SMD UNO Feature Original Arduino UNO Compatible SMD UNO Microcontroller ATmega328P (DIP) ATmega328P (SMD) Build Type Through-hole components Surface-mount components Chip Replaceability Removable and replaceable Fixed (non-removable) Size Slightly larger More compact Performance Same processing power Same processing power USB Interface ATmega16U2 CH340 or similar USB-to-Serial chip Ease of Repair Easier (replaceable chip) Harder to repair Cost Slightly higher More affordable Durability Very robust Slightly less robust mechanically Best For Learners who want to experiment with hardware Budget-friendly, compact projects Beginner Project Ideas with Arduino UNO SMD LED Blink Project Temperature Sensor Monitoring Light Sensor (LDR) Based Automation DC Motor Speed Control Ultrasonic Distance Measurement RGB LED Color Mixing Servo Motor Angle Control Sound Sensor Activation IR Remote Controlled LED Push Button Counter Display Applications: Arduino Music Instrument Robot Car Fingerprint door lock Home Automation Security systems

Transparent Plastic Case for Arduino UNO R3 This is a Clear Yellow Plastic Case for Arduino UNO R3 . The case is a two-piece injection-molded enclosure that holds together around the Arduino and it holds the Arduino firmly in place. As it is transparent is perfect for letting you see your Arduino Uno and make any needed adjustments easily. The transparent Case for the UNO R3 board is of high-grade acrylic, which provides excellent protection. This is unique design provides an easy connection to other components. The dimension of the enclosure box is the same as the original Arduino Uno R3. Note: Arduino Uno Board is not included in this package.

Multifunctional Expansion Board The multifunctional expansion board is a perfect expansion board for enthusiast who are getting started with Arduino. The expansion board is best compatible with UNO board and Leonardo boards compatible with arduino. It has range of features which makes it ideal for beginners who just want to experiment and learn, or just as a general-purpose shield for more advanced uses. The Arduino shield includes R3 type headers for easy connection to your Arduino board . check out : Arduino Sensor Shield V4.0 Expansion Board Features: All-in-One Expansion – Adds multiple interfaces for enhanced project flexibility. Plug-and-Play Compatibility – Designed for Arduino UNO R3 and Leonardo, making prototyping easy. Rich Connectivity – Includes I2C, SPI, UART, and digital/analog pin breakouts for versatile connections. Servo & Motor Support – Built-in connectors for direct servo and motor control. Power Management – Integrated voltage regulation for stable performance. Sensor Integration – Compatible with various sensors for advanced IoT and robotics applications. Compact & Durable – Designed for easy installation while maintaining reliability.

Arduino UNO R4 Minima Presenting the remarkable Arduino UNO R4 Minima, an extraordinary addition to the esteemed UNO board series. This pioneering release showcases an array of impressive attributes, commencing with its utilization of a 32-bit microcontroller. Empowered by the renowned RA4M1 series microcontroller from Renesas (R7FA4M1AB3CFM#AA0), housing a formidable 48 MHz Arm Cortex-M4 microprocessor. The UNO R4 Minima presents an expanded capacity for memory, including an impressive 256 kB flash, 32 kB SRAM, and 8 kB of data memory (EEPROM). Operating at 5 V, this board ensures seamless compatibility with UNO form factor accessories tailored for the same voltage. While earlier UNO shields remain functional, it is important to note that software compatibility may vary due to the microcontroller transition. Indulge in the unparalleled performance and enriched functionalities of the UNO R4 Minima, and embark on an extraordinary journey of innovation today. Features: 32-bit development board, previously based on 8-bit AVR Standard 14 digital I/O ports, 6 analog channels, and dedicated pins for I²C, SPI, and UART connections Larger memory: 8 times more flash memory (256 kB) and 16 times more SRAM (32 kB) Easy power management: Barrel jack connector supports input voltages from 6-24 V, eliminating the need for additional circuitry Cross-compatibility: UNO form factor makes it compatible with existing third-party shields and accessories Best deals on Original Arduino UNO R4 WiFi – Shop now! Also check out the wide range of Original Arduino Boards.

UNO Robotics Kit compatible with Arduino The Arduino basic Starter kit will help you get started in the world of electronics and embedded system programming. This kit is aimed at beginners and can be easily obtained to get you started with DIY electronics Arduino Uno is a microcontroller board based on the ATmega328P. 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 This UNO board starter kit is useful for students and hobbyists to test and prototype their electrical projects. Engineering students can buy UNO basic starter kit online to develop and build their final semester projects. Pinout for Arduino Uno Pin Diagram of Arduino Uno Applications: DIY Projects: This Arduino Uno kit can be used in making fun projects like Keypad operated door lock, ,DIY Calculator etc.