Arduino UNO R3 ATmega328P SMD Development Board (Clone)

Description

Arduino UNO R3 – ATmega328P SMD Development Board (Clone)

The Arduino UNO R3 ATmega328P SMD Clone is the most popular microcontroller board for learning electronics, prototyping, and building DIY projects. Featuring a surface-mount ATmega328P chip and CH340G USB-to-serial converter, this board delivers the same functionality as the original Arduino UNO at a fraction of the cost. Comes with a USB cable included — plug in and start coding right away.

Key Features

• ATmega328P Microcontroller – 32 KB flash memory, 2 KB SRAM, and 1 KB EEPROM. Enough to run complex sketches, sensor arrays, and multi-component projects.
• 14 Digital I/O Pins – 6 of which support PWM output for motor control, LED dimming, and servo positioning.
• 6 Analog Input Pins – Read sensors like temperature, light, humidity, soil moisture, and potentiometers with 10-bit resolution.
• CH340G USB Interface – Reliable USB-to-serial communication. Works with Windows, macOS, and Linux after installing the free CH340 driver.
• USB Cable Included – Type-B USB cable in the box. Connect to your computer, open Arduino IDE, and upload your first sketch in minutes.
• 5V Operating Voltage – Standard logic level compatible with thousands of sensors, modules, shields, and breakout boards in the Arduino ecosystem.
• Multiple Power Options – Power via USB, DC barrel jack (7–12V recommended), or VIN pin. Switch between sources automatically.
• ICSP Header – Program the board using an external programmer or burn custom bootloaders for advanced applications.
• 16 MHz Clock Speed – Ceramic resonator provides stable timing for serial communication, PWM signals, and delay-critical applications.
• Reset Button – One-press hardware reset to restart your sketch without disconnecting power or USB.
• SMD Form Factor – Surface-mount ATmega328P instead of the DIP package. Same functionality, slightly more compact profile.

Technical Specifications

• Microcontroller: ATmega328P (SMD)
• USB Chip: CH340G
• Operating Voltage: 5V
• Input Voltage (recommended): 7–12V
• Digital I/O Pins: 14 (6 with PWM)
• Analog Input Pins: 6
• I/O Pin Output Current: 40 mA max
• 3.3V Output Current: 150 mA max
• Flash Memory: 32 KB (0.5 KB used by bootloader)
• SRAM: 2 KB
• EEPROM: 1 KB
• Clock Speed: 16 MHz

Compatible With

• Arduino IDE – Full compatibility with Arduino IDE 1.x and 2.x. Select “Arduino Uno” as your board — no special configuration needed.
• All UNO Shields – Standard UNO R3 pin layout. Motor shields, relay shields, LCD shields, Ethernet shields, and sensor shields plug in directly.
• Thousands of Libraries – Access the entire Arduino library ecosystem for sensors, displays, communication protocols, and more.
• Sensor Modules – Works with DHT11/22, HC-SR04, PIR, IR, BMP280, MPU6050, soil moisture, gas sensors, and virtually every Arduino-compatible module.

Ideal Applications

• Learning & Education – The standard board for university courses, STEM workshops, and self-taught electronics. Massive online community and tutorials available.
• Home Automation – Control relays, lights, fans, door locks, and appliances. Build your own smart home system from scratch.
• Robotics – Drive DC motors, servos, and steppers for robot arms, line followers, obstacle avoiders, and sumo bots.
• IoT Prototyping – Pair with ESP8266 or ESP32 WiFi modules to build connected sensors, dashboards, and cloud-reporting devices.
• Weather Stations – Read temperature, humidity, pressure, and light sensors. Log data to SD card or display on LCD/OLED screens.
• Industrial Monitoring – Prototype environmental monitors, flow meters, and alert systems before scaling to production hardware.

What’s Included

• 1 × Arduino UNO R3 ATmega328P SMD Board (Clone)
• 1 × USB Type-B Cable

Getting Started

• Step 1: Download and install the Arduino IDE from arduino.cc.
• Step 2: Install the CH340G driver (search “CH340 driver” — free download for Windows, Mac, Linux).
• Step 3: Connect the board via USB. In Arduino IDE, select Board: “Arduino Uno” and the correct COM port.
• Step 4: Open File → Examples → 01.Basics → Blink. Click Upload. The onboard LED will start blinking — you’re ready to build.

The Arduino UNO R3 is the world’s most widely used development board for a reason — simple enough for beginners, powerful enough for real projects. Whether you’re a student, hobbyist, or engineer prototyping your next product, this is where it starts.