Features

• Compact & Breadboard-Friendly design
• ATmega328P-AU microcontroller
• CH340G USB-to-Serial chip
• 8 Analog input pins (A0–A7)
• 14 Digital I/O pins (6 PWM-capable)
• 16 MHz crystal oscillator
• Mini-B USB connector
• Onboard LEDs: RX, TX, Power, and D13
• ICSP header for in-circuit programming
• Reset button
• AMS1117 voltage regulator (5V output)

Principle of Operation

1. Microcontroller: Executes program instructions and controls peripherals.
2. USB-to-Serial: CH340G enables communication with a computer.
3. Power Supply: Powered via Mini-B USB or 7–12V through Vin/GND.
4. Clock: 16 MHz crystal oscillator ensures accurate timing.
5. Digital I/O: 14 pins for digital input/output.
6. Analog Inputs: 8 pins for analog signal measurement.
7. Indicators: LEDs show power and serial activity.
8. Reset & ICSP: Supports reset and firmware programming.

Pinout

Applications

• Prototyping
• Electronics education
• IoT projects
• Automation & robotics
• DIY electronics
• Data acquisition
• Embedded systems
• Wearable technology
• Smart home automation
• Interactive art installations

Getting Started

1. Connect the board using a Mini-B USB cable
2. Install the CH340 driver
3. Install Arduino IDE
4. Select Arduino Nano under Tools → Board
5. Select the correct COM port
6. Write, verify, and upload your sketch

Example Code

// Blink Code with Serial Status
const int ledPin = 13;
int blinkInterval = 1000;

void setup() {
pinMode(ledPin, OUTPUT);
Serial.begin(9600);
Serial.println("Blink with Serial Status");
}

void loop() {
digitalWrite(ledPin, HIGH);
Serial.println("LED ON");
delay(blinkInterval);

digitalWrite(ledPin, LOW);
Serial.println("LED OFF");
delay(blinkInterval);
} 

Technical Specifications

• Operating Voltage: 5V
• Input Voltage: 7–12V
• Flash Memory: 32 KB
• SRAM: 2 KB
• EEPROM: 1 KB
• Clock Speed: 16 MHz
• PCB Size: 18 × 45 mm
• Weight: ~7 g

Comparison with Arduino Nano