Arduino UNO+WiFi R3 ATmega328P+Node MCU ESP8266 CH340G Compatible Board Documentation

Component Name

Arduino UNO+WiFi R3 ATmega328P+Node MCU ESP8266 CH340G Compatible Board

Overview

The Arduino UNO+WiFi R3 ATmega328P+Node MCU ESP8266 CH340G Compatible Board is a microcontroller board that combines the popular Arduino UNO R3 board with the powerful Node MCU ESP8266 WiFi module, providing a versatile and feature-rich platform for IoT projects and wireless applications.

Key Features

### Microcontroller
ATmega328P	The board is based on the ATmega328P microcontroller, which is an 8-bit AVR microcontroller with 32KB of flash memory, 2KB of SRAM, and 1KB of EEPROM.
Arduino UNO R3	The board is compatible with the Arduino UNO R3, making it easy to use with the Arduino IDE and a wide range of existing Arduino libraries and projects.
### WiFi Module
Node MCU ESP8266	The board features the Node MCU ESP8266 WiFi module, which provides WiFi connectivity and enables the board to connect to the internet and communicate with other devices.
ESP8266	The ESP8266 is a low-cost, low-power system-on-a-chip (SoC) with integrated WiFi capabilities, making it an ideal choice for IoT applications.
### Communication

UART

The board uses a CH340G USB-to-UART converter chip for serial communication, allowing for easy programming and debugging.

WiFi

The Node MCU ESP8266 module provides WiFi connectivity, enabling wireless communication and internet access.

### Power and Connectivity

Power Input

The board can be powered via a USB connection or an external power source (7-12V).

Headers

The board features standard Arduino UNO-style headers, making it easy to connect sensors, actuators, and other devices.

breadboard-friendly	The board is designed to be breadboard-friendly, making it easy to prototype and test projects.
### Other Features

Reset Button

The board features a reset button, allowing for easy resets and reboots.

Power LED

A built-in power LED indicates when the board is powered on.

WiFi Status LED

A dedicated LED indicates the WiFi status, making it easy to monitor the board's WiFi connectivity.

IoT Applications

The board is ideal for IoT applications, including home automation, robotics, and wireless sensor networks.

Wireless Communication

The board enables wireless communication between devices, making it suitable for projects that require remote monitoring and control.

Prototyping and Development

The board's Arduino UNO R3 compatibility and breadboard-friendly design make it an excellent choice for prototyping and developing IoT projects.

Conclusion

The Arduino UNO+WiFi R3 ATmega328P+Node MCU ESP8266 CH340G Compatible Board is a powerful and versatile platform for IoT projects and wireless applications. Its combination of the popular Arduino UNO R3 and the Node MCU ESP8266 WiFi module makes it an ideal choice for developers and makers looking to create innovative IoT projects.

Pin Configuration

Arduino UNO+WiFi R3 ATmega328P+Node MCU ESP8266 CH340G Compatible Board Pinout Explanation
The Arduino UNO+WiFi R3 ATmega328P+Node MCU ESP8266 CH340G Compatible Board is a microcontroller board that combines the functionality of an Arduino UNO R3 and a Node MCU ESP8266. It features a ATmega328P microcontroller and an ESP8266 WiFi module. Here is a detailed explanation of the pins on the board:
Digital Pins:
1. Digital Pin 0 (RX): This pin is used for serial communication and is connected to the RX pin of the ATmega328P microcontroller. It is used to receive data from the ESP8266 WiFi module.
2. Digital Pin 1 (TX): This pin is used for serial communication and is connected to the TX pin of the ATmega328P microcontroller. It is used to transmit data to the ESP8266 WiFi module.
3. Digital Pin 2: This is a digital input/output pin that can be used for various purposes such as controlling LEDs, reading sensor data, or communicating with other devices.
4. Digital Pin 3: This is a digital input/output pin that can be used for various purposes such as controlling LEDs, reading sensor data, or communicating with other devices.
5. Digital Pin 4: This is a digital input/output pin that can be used for various purposes such as controlling LEDs, reading sensor data, or communicating with other devices.
6. Digital Pin 5: This is a digital input/output pin that can be used for various purposes such as controlling LEDs, reading sensor data, or communicating with other devices.
7. Digital Pin 6: This is a digital input/output pin that can be used for various purposes such as controlling LEDs, reading sensor data, or communicating with other devices.
8. Digital Pin 7: This is a digital input/output pin that can be used for various purposes such as controlling LEDs, reading sensor data, or communicating with other devices.
9. Digital Pin 8: This is a digital input/output pin that can be used for various purposes such as controlling LEDs, reading sensor data, or communicating with other devices.
10. Digital Pin 9: This is a digital input/output pin that can be used for various purposes such as controlling LEDs, reading sensor data, or communicating with other devices.
11. Digital Pin 10: This is a digital input/output pin that can be used for various purposes such as controlling LEDs, reading sensor data, or communicating with other devices.
12. Digital Pin 11: This is a digital input/output pin that can be used for various purposes such as controlling LEDs, reading sensor data, or communicating with other devices.
13. Digital Pin 12: This is a digital input/output pin that can be used for various purposes such as controlling LEDs, reading sensor data, or communicating with other devices.
14. Digital Pin 13: This is a digital input/output pin that is connected to the on-board LED. It can be used to control the LED or as a general-purpose digital input/output pin.
Analog Pins:
1. Analog Pin A0: This is an analog input pin that can be used to read analog sensor data.
2. Analog Pin A1: This is an analog input pin that can be used to read analog sensor data.
3. Analog Pin A2: This is an analog input pin that can be used to read analog sensor data.
4. Analog Pin A3: This is an analog input pin that can be used to read analog sensor data.
5. Analog Pin A4: This is an analog input pin that can be used to read analog sensor data.
6. Analog Pin A5: This is an analog input pin that can be used to read analog sensor data.
Power Pins:
1. Vin: This is the input voltage pin that can be used to power the board. It can accept a voltage range of 7-12V.
2. 5V: This pin provides a regulated 5V output that can be used to power external devices.
3. 3V3: This pin provides a regulated 3.3V output that can be used to power external devices.
4. GND: This is the ground pin that provides a common ground connection for the board.
ESP8266 WiFi Module Pins:
1. GPIO0: This is a digital input/output pin that is connected to the ESP8266 WiFi module.
2. GPIO2: This is a digital input/output pin that is connected to the ESP8266 WiFi module.
3. EN: This is the enable pin for the ESP8266 WiFi module.
4. RST: This is the reset pin for the ESP8266 WiFi module.
CH340G USB-to-Serial Converter Pins:
1. TXD: This pin is used for serial communication and is connected to the TX pin of the CH340G USB-to-serial converter.
2. RXD: This pin is used for serial communication and is connected to the RX pin of the CH340G USB-to-serial converter.
Connection Structure:
Connect the Vin pin to a power source (7-12V) or a battery.
Connect the GND pin to a common ground connection.
Connect digital pins 0-13 to external devices such as LEDs, sensors, or other microcontrollers.
Connect analog pins A0-A5 to analog sensors or other analog devices.
Connect the 5V or 3V3 pins to external devices that require a regulated voltage source.
Connect the ESP8266 WiFi module pins (GPIO0, GPIO2, EN, RST) to external devices or sensors.
Connect the CH340G USB-to-serial converter pins (TXD, RXD) to a computer or other serial device.
Important Notes:
Make sure to handle the board with care to avoid damaging the microcontrollers or other components.
Use a suitable power source and voltage regulator to ensure stable operation of the board.
Follow proper safety precautions when working with electrical components and power sources.
Refer to the datasheets and official documentation for the ATmega328P, ESP8266, and CH340G components for more detailed information on pinouts and usage.

Code Examples

Component Overview

The Arduino UNO+WiFi R3 ATmega328P+Node MCU ESP8266 CH340G Compatible Board is a microcontroller board that combines the popular Arduino UNO platform with the capabilities of the NodeMCU ESP8266 module for WiFi connectivity. This board is based on the ATmega328P microcontroller and features a CH340G USB-to-UART bridge for serial communication.

Technical Specifications

Microcontroller: ATmega328P
 Operating Frequency: 16 MHz
 SRAM: 2 KB
 Flash Memory: 32 KB
 EEPROM: 1 KB
 WiFi Module: NodeMCU ESP8266
 WiFi Frequency: 2.4 GHz
 WiFi Protocols: 802.11 b/g/n
 Interface: USB, UART, SPI, I2C, I/O digital/analog
 Power Supply: 7-12 V (recommended 9 V)

Code Examples

### Example 1: Connecting to WiFi and Sending Data to a Server

This example demonstrates how to connect to a WiFi network and send data to a server using the Arduino UNO+WiFi R3 ATmega328P+Node MCU ESP8266 CH340G Compatible Board.

```cpp
#include <WiFi.h>

const char ssid = "your_wifi_ssid";
const char password = "your_wifi_password";
const char server = "http://example.com/data";

WiFiClient client;

void setup() {
  Serial.begin(115200);

// Connect to WiFi
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Connecting to WiFi...");
  }

Serial.println("Connected to WiFi");
  Serial.println("Initializing connection to server...");
}

void loop() {
  if (client.connect(server, 80)) {
    Serial.println("Connected to server");

// Send data to server
    client.println("GET /data HTTP/1.1");
    client.println("Host: example.com");
    client.println("Connection: close");
    client.println();

while (client.connected()) {
      if (client.available()) {
        char c = client.read();
        Serial.print(c);
      }
    }

client.stop();
  } else {
    Serial.println("Connection to server failed");
  }

delay(10000);
}
```

### Example 2: Creating a Simple Web Server

This example demonstrates how to create a simple web server using the Arduino UNO+WiFi R3 ATmega328P+Node MCU ESP8266 CH340G Compatible Board.

```cpp
#include <WiFi.h>
#include <WiFiServer.h>

const char ssid = "your_wifi_ssid";
const char password = "your_wifi_password";

WiFiServer server(80);

void setup() {
  Serial.begin(115200);

// Connect to WiFi
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Connecting to WiFi...");
  }

Serial.println("Connected to WiFi");
  Serial.println("Starting web server...");
  server.begin();
}

void loop() {
  WiFiClient client = server.available();

if (client) {
    Serial.println("New client connected");

while (client.connected()) {
      if (client.available()) {
        String request = client.readStringUntil('
');
        Serial.println(request);

if (request.indexOf("/ledon") != -1) {
          digitalWrite(LED_BUILTIN, HIGH);
          client.println("HTTP/1.1 200 OK");
          client.println("Content-Type: text/html");
          client.println();
          client.println("<h1>LED is ON</h1>");
        } else if (request.indexOf("/ledoff") != -1) {
          digitalWrite(LED_BUILTIN, LOW);
          client.println("HTTP/1.1 200 OK");
          client.println("Content-Type: text/html");
          client.println();
          client.println("<h1>LED is OFF</h1>");
        } else {
          client.println("HTTP/1.1 404 Not Found");
          client.println("Content-Type: text/html");
          client.println();
          client.println("<h1>Not Found</h1>");
        }
      }
    }

client.stop();
    Serial.println("Client disconnected");
  }
}
```

Note: In these examples, you need to replace "your_wifi_ssid" and "your_wifi_password" with your WiFi network's SSID and password, respectively. Also, ensure that you have installed the necessary libraries and board definitions in your Arduino IDE.