The ESP32-S3-WROOM-1U is a high-performance Wi-Fi and Bluetooth microcontroller module developed by Espressif. It features a dual-core processor, integrated memory, and a wide range of GPIO options, making it an excellent choice for IoT (Internet of Things) applications. This module is designed for applications requiring high processing power, wireless connectivity, and low power consumption.
The ESP32-S3-WROOM-1U module is built for versatility and performance. Below are its key technical details:
Parameter | Specification |
---|---|
Microcontroller | ESP32-S3 (Xtensa® 32-bit LX7 dual-core processor) |
Clock Speed | Up to 240 MHz |
Wireless Connectivity | Wi-Fi 802.11 b/g/n (2.4 GHz), Bluetooth 5 (LE) |
Flash Memory | 4 MB (default) |
SRAM | 512 KB |
PSRAM (Optional) | Up to 8 MB |
Operating Voltage | 3.0V to 3.6V |
GPIO Pins | 45 (configurable for various functions) |
Interfaces | SPI, I2C, I2S, UART, PWM, ADC, DAC, USB-OTG |
Power Consumption | Ultra-low power in deep sleep mode (~10 µA) |
Antenna | External antenna (U.FL connector) |
Dimensions | 13.2 mm x 16.6 mm x 2.4 mm |
The ESP32-S3-WROOM-1U module has a total of 38 pins exposed for use. Below is the pinout description:
Pin Number | Name | Function Description |
---|---|---|
1 | GND | Ground |
2 | 3V3 | Power supply (3.3V) |
3 | EN | Enable pin (active high) |
4 | IO0 | GPIO0, boot mode selection, ADC, or other uses |
5 | IO1 | GPIO1, UART TXD, or other uses |
6 | IO2 | GPIO2, ADC, or other uses |
7 | IO3 | GPIO3, UART RXD, or other uses |
8 | IO4 | GPIO4, PWM, or other uses |
... | ... | ... |
38 | IO37 | GPIO37, ADC, or other uses |
Note: Refer to the official datasheet for the complete pinout and advanced configurations.
The ESP32-S3-WROOM-1U is versatile and can be used in a variety of circuits. Below are the steps and best practices for using this module:
3V3
pin. Ensure the current rating of the power source meets the module's requirements.IO0
pin to GND during power-up to enter bootloader mode for programming.The ESP32-S3-WROOM-1U can be programmed using the Arduino IDE. Below is an example code snippet to connect the module to a Wi-Fi network:
#include <WiFi.h> // Include the Wi-Fi library for ESP32
// Replace with your network credentials
const char* ssid = "Your_SSID";
const char* password = "Your_PASSWORD";
void setup() {
Serial.begin(115200); // Initialize serial communication
delay(1000);
Serial.println("Connecting to Wi-Fi...");
WiFi.begin(ssid, password); // Start Wi-Fi connection
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print("."); // Print dots while connecting
}
Serial.println("\nWi-Fi connected!");
Serial.print("IP Address: ");
Serial.println(WiFi.localIP()); // Print the assigned IP address
}
void loop() {
// Add your main code here
}
Note: Ensure the ESP32-S3-WROOM-1U is in programming mode when uploading the code.
Module Not Powering On
Wi-Fi Connection Fails
Cannot Upload Code
IO0
is connected to GND during programming and install the correct USB drivers.Poor Wireless Signal
Q: Can I use the ESP32-S3-WROOM-1U with a 5V power supply?
A: No, the module requires a 3.3V power supply. Use a voltage regulator if needed.
Q: Does the module support Bluetooth audio?
A: Yes, the ESP32-S3 supports Bluetooth Low Energy (BLE) and Bluetooth audio applications.
Q: How do I reset the module?
A: Pull the EN
pin low momentarily to reset the module.
Q: Can I use the module without an external antenna?
A: No, the ESP32-S3-WROOM-1U requires an external antenna for wireless communication.
By following this documentation, you can effectively integrate the ESP32-S3-WROOM-1U into your projects and troubleshoot common issues. For more advanced configurations, refer to the official Espressif datasheet.