Arduino Uno SMD Rev3 (Original)

The UNO R3 SMD is the most recognized and widely used development board. It mirrors the functionality of the standard Arduino Uno and uses the ATmega16U2 chip for USB-to-serial communication with a PC.

Package Includes:

• 1 x UNO R3 SMD Original Board

Key Features:

• Microcontroller: ATmega328P (16 MHz)

• USB Interface: ATmega16U2

• Flash Memory: 32KB

• 14 Digital I/O pins (6 PWM capable)

• 6 Analog input pins (also usable as digital I/O)

• 1 Hardware serial port

• Operates at 5V

Pinout Highlights:

• Digital I/O: D0 to D13, PWM on D3, D5, D6, D9, D10, D11

• Analog I/O: A0 to A5 (also usable as digital)

• Power Pins: 3.3V, 5V, GND, Vin

• Communication: RX/TX, SDA/SCL (I2C), SPI via ICSP header

• Built-in LEDs: Power, TX, RX, and on pin D13

• USB Interface: USB-B for power and programming

• Reset Options: Button and header

Applications:

• Weighing machines

• Traffic light timers

• Parking counters

• Embedded systems

• Home & industrial automation

• Medical instruments

• Railway emergency lights

Getting Started with Arduino UNO:

1. Download and install the Arduino IDE

2. Connect the board to your PC using a USB data cable

3. Select the board & port from the Tools menu

4. Upload your code (example: Blink)

Test Code Example:

cpp
CopyEdit
void setup() {
  pinMode(13, OUTPUT);
}
void loop() {
  digitalWrite(13, HIGH);
  delay(1000);
  digitalWrite(13, LOW);
  delay(1000);
}

Technical Specifications:

Original vs Clone Comparison:

• The Original UNO SMD uses ATmega16U2 and does not require additional drivers

• Clone versions often use CH340, which may require driver installation

• Original boards offer higher build quality and more stable performance