How to Use Waveshare ESP32-S3 Mini Development Board, Based on ESP32-S3FH4R2 Dual-Core Processor, 240MHz Running Frequency, 2.4GHz Wi-Fi & Bluetooth 5: Examples, Pinouts, and Specs

The Waveshare ESP32-S3 Mini Development Board is a compact and versatile development platform based on the ESP32-S3FH4R2 dual-core processor. With a maximum clock speed of 240MHz, this board is designed for high-performance applications. It supports 2.4GHz Wi-Fi and Bluetooth 5, making it an excellent choice for IoT projects, wireless communication, and smart devices.

• IoT (Internet of Things) devices and systems
• Wireless communication and networking
• Smart home automation
• Wearable devices
• Prototyping for AI and machine learning applications
• Low-power sensor networks

• Processor: ESP32-S3FH4R2 dual-core processor
• Clock Speed: Up to 240MHz
• Wireless Connectivity: 2.4GHz Wi-Fi and Bluetooth 5
• Flash Memory: 4MB
• SRAM: 512KB
• GPIO Pins: 27 (configurable for various functions)
• Operating Voltage: 3.3V
• Power Supply: USB Type-C (5V input)
• Dimensions: 51mm x 25.4mm
• Operating Temperature: -40°C to 85°C

The Waveshare ESP32-S3 Mini Development Board features a 2x15 pin header layout. Below is the pin configuration:

1. Powering the Board: Connect the board to a 5V USB power source using the USB Type-C port.
2. Programming: Use the USB connection to upload code via the Arduino IDE, PlatformIO, or ESP-IDF.
3. GPIO Configuration: Configure the GPIO pins for input, output, or alternate functions (e.g., ADC, PWM).
4. Wireless Connectivity: Use the built-in Wi-Fi and Bluetooth modules for wireless communication.

• Ensure the board is powered with a stable 5V supply to avoid damage.
• Use level shifters if interfacing with 5V logic devices, as the board operates at 3.3V.
• Avoid connecting high-current loads directly to GPIO pins; use external drivers or relays.
• When using Wi-Fi or Bluetooth, ensure proper antenna placement for optimal signal strength.

Below is an example of how to use the Waveshare ESP32-S3 Mini Development Board to blink an LED connected to GPIO2:

// Example: Blink an LED on GPIO2 of the ESP32-S3 Mini Development Board

// Define the GPIO pin for the LED
#define LED_PIN 2

void setup() {
  // Initialize the LED pin as an output
  pinMode(LED_PIN, OUTPUT);
}

void loop() {
  // Turn the LED on
  digitalWrite(LED_PIN, HIGH);
  delay(1000); // Wait for 1 second

  // Turn the LED off
  digitalWrite(LED_PIN, LOW);
  delay(1000); // Wait for 1 second
}

1. Board Not Detected by Computer:

   • Ensure the USB cable is functional and supports data transfer.
   • Verify that the correct drivers for the ESP32-S3 are installed on your computer.

2. Code Upload Fails:

   • Check that the correct board and port are selected in the Arduino IDE or other programming tools.
   • Ensure the board is in boot mode by holding the BOOT button while pressing the RESET button.

3. Wi-Fi or Bluetooth Not Working:

   • Verify that the correct credentials or pairing settings are used in your code.
   • Ensure the board is within range of the Wi-Fi router or Bluetooth device.

• Use a multimeter to check the voltage levels on the power pins.
• Test the GPIO pins with a simple LED circuit to ensure they are functioning.
• Refer to the Waveshare documentation for additional resources and support.