Arduino Nano V3 ATmega328 CH340 Soldered (Compatible)

Features:

• Microcontroller: ATmega328P (32KB Flash, 2KB SRAM, 1KB EEPROM)
• USB-to-Serial Chip: CH340
• Digital I/O Pins: 14 (6 with PWM support)
• Analog Inputs: 8
• Clock Speed: 16 MHz Quartz Crystal
• Compatibility: Fully compatible with Arduino IDE
• Breadboard-Friendly: Compact size, fits standard breadboards
• Power Consumption: Energy-efficient design
• Onboard LEDs: Built-in status/debug LED on Pin 13
• Open-Source: Hardware design is open-source
• USB Programming: Program and power via USB
• Expandable: Supports various shields and modules

Description:

The Arduino Nano v3 CH340 is a favorite among electronics enthusiasts due to its small footprint and rich features. Equipped with the same microcontroller as the Arduino Uno, this board is perfect for compact or wearable projects. It includes a CH340 USB-to-serial chip for easy communication and programming via USB using the Arduino IDE. The soldered version is ready to use out of the box, while an unsoldered version is also available for custom builds. Basic soldering skills are required to assemble the unsoldered variant.

Principle of Work:

This board operates via the ATmega328P microcontroller, executing uploaded code and managing I/O tasks. The CH340 chip enables communication between the board and a computer through USB, allowing you to upload sketches and interact via the Serial Monitor.

Workflow:

1. Install CH340 USB driver if needed: Download here
2. Connect board via USB
3. Select board type: "Arduino Nano" in Arduino IDE
4. Select processor: "ATmega328P"
5. Select correct COM port
6. Upload code via Arduino IDE

Pinout of the Board:

Applications:

• DIY electronics and home automation
• Robotics (e.g., line-followers, RC vehicles)
• Sensor data collection and environmental monitoring
• Wearables (e.g., smartwatches, fitness trackers)
• IoT systems with internet connectivity
• Educational electronics and STEM teaching
• Data logging using SD cards or Serial Monitor
• Art installations and interactive displays
• Automotive diagnostics or small-scale controls
• Wireless communication projects using Bluetooth/Wi-Fi

Sample Code:

void setup() {
  pinMode(LED_BUILTIN, OUTPUT); // Set LED pin as output
  Serial.begin(9600); // Start serial communication
}

void loop() {
  if (Serial.available()) {
    char command = Serial.read();
    if (command == '1') {
      digitalWrite(LED_BUILTIN, HIGH);
      Serial.println("LED turned on");
    } else if (command == '0') {
      digitalWrite(LED_BUILTIN, LOW);
      Serial.println("LED turned off");
    }
  }
}

Technical Specifications:

• Microcontroller: ATmega328P
• Clock Speed: 16 MHz
• Operating Voltage: 5V
• Input Voltage (Recommended): 7–12V
• Input Voltage (Limits): 6–20V
• Digital I/O Pins: 14 (6 PWM)
• Analog Inputs: 8
• Flash Memory: 32 KB (2 KB used by bootloader)
• SRAM: 2 KB
• EEPROM: 1 KB
• DC Current per I/O Pin: 20 mA
• DC Current for 3.3V Pin: 50 mA
• USB to Serial: CH340G

Resources:

• Arduino IDE Download
• CH340 Driver Download

Comparison: Nano v3 vs Pro Mini