How to Use ESP32-S3 DevKitC-1 WROOM-1: Examples, Pinouts, and Specs

The ESP32-S3 DevKitC-1 WROOM-1 is a development board designed by Espressif Systems. It is based on the ESP32-S3-WROOM-1 module, which features a dual-core Xtensa LX7 processor, integrated Wi-Fi (802.11 b/g/n), and Bluetooth 5.0 LE capabilities. This board is ideal for IoT applications, AI processing, and edge computing due to its powerful processing capabilities and support for AI acceleration.

• IoT devices and smart home automation
• Wearable electronics
• AI and machine learning at the edge
• Wireless communication and networking
• Industrial automation and control systems
• Prototyping and development of embedded systems

The following are the key technical details of the ESP32-S3 DevKitC-1 WROOM-1:

The ESP32-S3 DevKitC-1 WROOM-1 features a 2x19 pin header layout. Below is the pinout description:

For a complete pinout diagram, refer to the official Espressif documentation.

1. Powering the Board:

   • Connect the board to a computer or USB power source using a USB Type-C cable.
   • Alternatively, supply 5V to the VIN pin for external power.

2. Programming the Board:

   • Install the Arduino IDE or Espressif's ESP-IDF development framework.
   • Add the ESP32-S3 board support package to your IDE.
   • Connect the board to your computer and select the appropriate COM port.

3. Connecting Peripherals:

   • Use the GPIO pins to connect sensors, actuators, or other peripherals.
   • Ensure that the voltage levels of connected devices are compatible with the 3.3V logic of the ESP32-S3.

4. Uploading Code:

   • Write your program in the IDE and upload it to the board.
   • The board will automatically reset and run the uploaded code.

• 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 EN (reset) button.
• Power Supply: Use a stable power source to avoid unexpected resets or malfunctions.
• Wi-Fi and Bluetooth: Avoid placing the board in metal enclosures that may interfere with wireless signals.

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. The board is not detected by the computer:

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

2. Code upload fails:

   • Verify that the correct COM port is selected in the IDE.
   • Hold the BOOT button while pressing the EN button to enter bootloader mode.

3. Wi-Fi connection issues:

   • Ensure the Wi-Fi credentials in your code are correct.
   • Check for interference or weak signal strength in your environment.

4. Board resets unexpectedly:

   • Use a stable power source with sufficient current (at least 500 mA).
   • Avoid short circuits or overloading the GPIO pins.

• Q: Can I use 5V peripherals with the ESP32-S3?
  A: No, the GPIO pins operate at 3.3V logic levels. Use a level shifter for 5V peripherals.

• Q: How do I enable Bluetooth functionality?
  A: Use the ESP-IDF or Arduino IDE libraries to initialize and configure Bluetooth.

• Q: What is the maximum current draw of the board?
  A: The board typically draws around 240 mA during peak operation with Wi-Fi and Bluetooth enabled.

For further assistance, refer to the official Espressif documentation or community forums.