How to Use Waveshare ESP32-S3-Nano: Examples, Pinouts, and Specs

The Waveshare ESP32-S3-Nano is a compact development board built around the ESP32-S3 microcontroller. This microcontroller features dual-core Xtensa LX7 processors, integrated Wi-Fi (802.11 b/g/n) and Bluetooth 5.0 LE capabilities, and a rich set of peripherals, making it ideal for IoT applications, smart devices, and rapid prototyping. The board is designed to be small and efficient, offering a versatile platform for developers to create connected solutions.

• IoT devices and smart home automation
• Wearable technology
• Wireless sensor networks
• Prototyping for AI and machine learning applications
• Bluetooth-enabled devices
• Low-power data logging and monitoring systems

The Waveshare ESP32-S3-Nano is packed with features that make it a powerful yet compact development board. Below are its key technical specifications:

• Microcontroller: ESP32-S3 (Xtensa LX7 dual-core processor)
• Clock Speed: Up to 240 MHz
• Flash Memory: 8 MB
• PSRAM: 8 MB
• Wireless Connectivity: Wi-Fi 802.11 b/g/n, Bluetooth 5.0 LE
• Operating Voltage: 3.3V
• GPIO Pins: 24 (multipurpose, including ADC, DAC, I2C, SPI, UART, PWM)
• USB Interface: USB Type-C (supports programming and power supply)
• Power Supply: 5V via USB or external power source
• Dimensions: 41mm x 20mm

The Waveshare ESP32-S3-Nano features a 24-pin layout. Below is the pin configuration:

The Waveshare ESP32-S3-Nano is easy to use and can be programmed using popular development environments such as Arduino IDE, PlatformIO, or ESP-IDF. Below are the steps to get started:

1. Power the Board: Connect the board to your computer or a power source using a USB Type-C cable. Ensure the power supply provides 5V.
2. Install Drivers: If required, install the USB-to-serial drivers for the ESP32-S3 on your computer.
3. Set Up the Development Environment:
   • Install the Arduino IDE or ESP-IDF.
   • Add the ESP32 board package to the Arduino IDE via the Board Manager.
4. Connect Peripherals: Use the GPIO pins to connect sensors, actuators, or other peripherals. Ensure proper voltage levels and connections.
5. Upload Code: Write and upload your code to the board using the development environment.

• Voltage Levels: Ensure all connected peripherals operate at 3.3V logic levels to avoid damaging the board.
• Boot Mode: To enter bootloader mode, hold the BOOT button while pressing the RESET button.
• Power Supply: Use a stable 5V power source to avoid unexpected resets or instability.
• Pin Multiplexing: Many GPIO pins have multiple functions (e.g., ADC, I2C, UART). Check the ESP32-S3 datasheet to avoid conflicts.

Below is an example of how to blink an LED connected to GPIO2:

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

void setup() {
  // Set 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.
   • Install the correct USB-to-serial drivers for the ESP32-S3.
2. Code Upload Fails:
   • Check the selected board and port in the Arduino IDE.
   • Enter bootloader mode by holding the BOOT button while pressing RESET.
3. Wi-Fi or Bluetooth Not Working:
   • Verify the Wi-Fi credentials in your code.
   • Ensure the board is within range of the Wi-Fi router or Bluetooth device.
4. Unstable Operation:
   • Use a stable power supply.
   • Avoid connecting peripherals that draw excessive current.

• Serial Monitor Debugging: Use the Serial Monitor in the Arduino IDE to print debug messages and identify issues.
• Check Connections: Double-check all wiring and connections to ensure they are secure and correct.
• Update Firmware: Ensure the ESP32-S3 firmware and libraries are up to date.

By following this documentation, you can effectively use the Waveshare ESP32-S3-Nano for your IoT and prototyping projects.