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 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.

UNO SMD Board compatible with Arduino The Uno SMD board is 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 crystal oscillator, 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 an AC-to-DC adapter or battery to get started. The Uno SMD development board comes with a CH340G USB to UART converter chip. So in order to use this board, we need to install the CH340 driver. It can be powered via a USB connection or with an external power supply. The power source is selected automatically. The AC-DC adapter can be connected by plugging a 2.1mm center-positive plug into the board's power jack. Leads from a battery can be inserted in the Gnd and Vin pin headers of the POWER connector. The board can operate on an external supply of 6 to 20 volts. If supplied with less than 7V, however, the 5V pin may supply less than five volts and the board may be unstable. If using more than 12V, the voltage regulator may overheat and damage the board. The recommended range is 7 to 12 volts. If you want to use this UNO SMD 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 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

CH340G Board compatible with Arduino The Uno+WiFi R3 is a fully integrated board that combines the Uno R3 ATmega 328 microcontroller with the WiFi ESP8266 chip, along with 8Mb of memory, all on a single board. Both modules can operate together or separately, each with their own pinout headers. This board provides a convenient solution for developing new projects that require both Uno and WiFi functionalities. It includes a USB-serial converter, CH340G, allowing for easy updating of sketches and firmware for both ATmega328 and Node MCU ESP8266. Essentially a modernized version of the classic Arduino UNO R3 board, the Uno+WiFi R3 offers simple operations and includes a DIP switch to connect the different modules in various configurations. LED lights are provided for connecting peripheral sensors and modules, making it a versatile choice for a wide range of projects. Check out the entire range of Compatible Arduino Boards Applications: WiFi-based IoT applications. IoT home automation. Internet Smoked Alarm. Incubator Controller. Security Alarms. Comparison With Similar 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 - -

AT24C256 I2C EEPROM Memory Module All pins leads out and be marked, the address input and the write-protect pin direct jumper settings on-board pull-up resistor for I2C communications required Onboard 8P-chip carrier, can support AT24C256 series chips Pin power supply, on-board power indicator

BBC Micro:bit Club Kit V2.21 Classroom Kit 10 Boards with Accessories The BBC Micro:bit Club Kit V2.21 is a complete set designed for learning and hands-on projects. It includes 10 Micro:bit V2 boards, USB cables, battery holders, and 2x AAA batteries. The Micro:bit is a small computer that helps you learn programming and how hardware works. It has built-in sensors, buttons, lights, a speaker, and Bluetooth to create fun and interactive projects. This kit works with computers, tablets, and phones, making it perfect for classrooms or group learning activities. Features Includes 10 BBC Micro:bit V2 boards for group learning. Comes with USB cables, battery holders, and 2x AAA batteries. Bluetooth 5.1 connectivity for communication with other devices. 5x5 LED display with 25 red LEDs for visual projects. Built-in sensors for light, temperature, motion, and sound. Microphone and onboard speaker for audio features. 2 programmable buttons for custom functions. Works with Microsoft, MacOS, iPads, iPhones, and Android devices. Easy to connect with crocodile clips and conductive thread. Ideal for classroom or group learning with hands-on projects.