How to Use esp8266 custom board: Examples, Pinouts, and Specs

The ESP8266 Custom Board is a development board based on the ESP8266 Wi-Fi module, designed for Internet of Things (IoT) projects and wireless communication applications. This board provides a simple and efficient way to add Wi-Fi capabilities to your projects, enabling remote control, data logging, and more. It is widely used in home automation, smart devices, and wireless sensor networks.

1. Power Supply: Connect the 3V3 pin to a 3.3V power source. If using USB, the board will regulate the 5V input to 3.3V.
2. Ground: Connect the GND pin to the ground of your circuit.
3. UART Communication: Connect the TX pin to the RX pin of your microcontroller and the RX pin to the TX pin of your microcontroller for serial communication.
4. GPIO Pins: Use the GPIO pins for digital input/output operations. These pins can be configured as needed in your code.
5. ADC: Connect analog sensors to the ADC pin for analog input readings.

• Voltage Levels: Ensure that all connected devices operate at 3.3V logic levels to avoid damaging the ESP8266.
• Power Consumption: The ESP8266 can draw significant current, especially during Wi-Fi transmissions. Ensure your power supply can provide at least 500 mA.
• Antenna Placement: For optimal Wi-Fi performance, place the board in an open area, away from metal objects and other sources of interference.
• Firmware Updates: Keep the firmware updated to the latest version to benefit from performance improvements and security patches.

#include <ESP8266WiFi.h>

// Replace with your network credentials
const char* ssid = "your_SSID";
const char* password = "your_PASSWORD";

void setup() {
  Serial.begin(115200); // Initialize serial communication at 115200 baud
  delay(10);

  // Connect to Wi-Fi network
  Serial.println();
  Serial.print("Connecting to ");
  Serial.println(ssid);

  WiFi.begin(ssid, password);

  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }

  Serial.println("");
  Serial.println("WiFi connected");
  Serial.println("IP address: ");
  Serial.println(WiFi.localIP()); // Print the IP address
}

void loop() {
  // Your main code here
}

1. Wi-Fi Connection Issues: The board may fail to connect to the Wi-Fi network.
2. Power Supply Problems: Insufficient power supply can cause the board to reset or malfunction.
3. Serial Communication Errors: Incorrect wiring or baud rate settings can lead to communication failures.

• Wi-Fi Connection Issues: Ensure the SSID and password are correct. Check for interference from other devices and ensure the router is within range.
• Power Supply Problems: Use a stable power source that can provide at least 500 mA. Avoid using long or thin wires that can cause voltage drops.
• Serial Communication Errors: Verify the TX and RX connections. Ensure the baud rate in the code matches the baud rate set in the serial monitor.

By following this documentation, you should be able to effectively use the ESP8266 Custom Board in your IoT projects and troubleshoot common issues. Happy building!