ESP32-S3 CAM Getting Started: Setup & First Blink 🚀

Just got an ESP32-S3 CAM? Let's get it running from scratch.

In this guide, we'll install everything needed, connect the board to Arduino IDE, and upload a simple onboard LED blink program.

What You Need

• ESP32-S3 CAM

• USB data cable

• Computer

• Arduino IDE

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1. Install Arduino IDE

Download and install the latest Arduino IDE from the official Arduino website.

After installing, open Arduino IDE.

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2. Install ESP32 Board Support

Open:

Arduino IDE → Settings

Find Additional Boards Manager URLs and add:

https://espressif.github.io/arduino-esp32/package_esp32_index.json

Click OK.

Now open:

Tools → Board → Boards Manager

Search:

ESP32

Install:

esp32 by Espressif Systems

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3. Connect the ESP32-S3 CAM

Connect the board using a USB data cable.

Then select:

Tools → Board → esp32 → ESP32S3 Dev Module

For a typical ESP32-S3 board, use:

USB CDC On Boot → Enabled

Then go to:

Tools → Port

and select the port belonging to your ESP32-S3.

Board names and LED pins can vary between ESP32-S3 CAM models, so check your board's pinout if these options differ.

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4. Upload Your First Blink Program

Start with this simple test:

void setup() {
  pinMode(LED_BUILTIN, OUTPUT);
}

void loop() {
  digitalWrite(LED_BUILTIN, HIGH);
  delay(1000);

  digitalWrite(LED_BUILTIN, LOW);
  delay(1000);
}

Click Upload.

After the upload finishes, the onboard LED should blink approximately every second.

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5. If LED_BUILTIN Doesn't Work

Don't worry.

ESP32-S3 CAM boards don't all use the same LED GPIO.

Check your board's pinout and replace:

LED_BUILTIN

with the correct LED GPIO.

For example:

#define LED_PIN 2

void setup() {
  pinMode(LED_PIN, OUTPUT);
}

void loop() {
  digitalWrite(LED_PIN, HIGH);
  delay(1000);

  digitalWrite(LED_PIN, LOW);
  delay(1000);
}

Only use GPIO 2 if your particular board specifies it.

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🎉 You're Ready!

If the blink test works, your ESP32-S3 CAM is successfully set up.

You now have everything ready for the next step:

📷 Camera initialization → Wi-Fi → Web Server → Live Streaming → AI projects

That's it — your ESP32-S3 CAM is ready to build with! 🚀