How to Use Adafruit ESP32-S3 TFT Feather: Examples, Pinouts, and Specs

The Adafruit ESP32-S3 TFT Feather (Part ID: 5483) is a compact and versatile development board designed for IoT and embedded applications. It features the powerful ESP32-S3 microcontroller, an integrated 1.9" TFT display, and support for various sensors and peripherals. This board is part of Adafruit's Feather ecosystem, making it compatible with a wide range of FeatherWing add-ons for extended functionality.

• IoT devices and smart home applications
• Portable data loggers and monitoring systems
• Embedded systems with graphical user interfaces
• Prototyping and development of wireless communication projects
• Educational projects and maker activities

The Adafruit ESP32-S3 TFT Feather is packed with features to support a wide range of applications. Below are its key technical details:

The Adafruit ESP32-S3 TFT Feather has a standard Feather pinout. Below is the pin configuration:

1. Powering the Board:

   • Connect the board to a USB-C cable for power and programming.
   • Alternatively, connect a 3.7V LiPo battery to the JST connector for portable operation.

2. Connecting Peripherals:

   • Use the GPIO pins for connecting sensors, actuators, or other peripherals.
   • For I2C devices, connect to the SDA and SCL pins.
   • For SPI devices, use the SCK, MOSI, and MISO pins along with a chip select pin.

3. Programming the Board:

   • Install the ESP32-S3 board support package in the Arduino IDE or use MicroPython.
   • Select "Adafruit ESP32-S3 TFT Feather" as the target board in the IDE.
   • Write and upload your code via the USB-C connection.

4. Using the TFT Display:

   • The integrated TFT display can be controlled using the Adafruit GFX and Adafruit ST7789 libraries.
   • Install these libraries in your Arduino IDE for easy integration.

• Ensure the board is powered with a stable 5V supply when using USB or a fully charged LiPo battery.
• Avoid exceeding the maximum current rating of the GPIO pins (12mA per pin).
• Use level shifters if interfacing with 5V logic devices, as the board operates at 3.3V logic levels.
• Handle the TFT display carefully to avoid damage to the screen or flex cable.

Below is an example code snippet to display text on the TFT screen:

#include <Adafruit_GFX.h>      // Core graphics library
#include <Adafruit_ST7789.h>   // Driver for the TFT display
#include <SPI.h>

// Define TFT pins
#define TFT_CS    10  // Chip select pin
#define TFT_DC    9   // Data/command pin
#define TFT_RST   -1  // Reset pin (-1 if not used)

// Initialize the TFT display
Adafruit_ST7789 tft = Adafruit_ST7789(TFT_CS, TFT_DC, TFT_RST);

void setup() {
  // Initialize serial communication
  Serial.begin(115200);
  Serial.println("TFT Display Test");

  // Initialize the TFT display
  tft.init(240, 135);  // Initialize with screen width and height
  tft.setRotation(1);  // Set screen rotation (0-3)

  // Set background color and text color
  tft.fillScreen(ST77XX_BLACK);
  tft.setTextColor(ST77XX_WHITE);

  // Display text
  tft.setCursor(10, 10);  // Set cursor position
  tft.setTextSize(2);     // Set text size
  tft.println("Hello, ESP32-S3!");
}

void loop() {
  // Nothing to do here
}

1. Board Not Detected by the Computer:

   • Ensure the USB-C cable is a data cable, not just a charging cable.
   • Check if the correct board and port are selected in the Arduino IDE.

2. TFT Display Not Working:

   • Verify the connections to the TFT_CS, TFT_DC, and TFT_RST pins.
   • Ensure the Adafruit GFX and ST7789 libraries are installed and up to date.

3. Wi-Fi or Bluetooth Not Connecting:

   • Double-check the SSID and password for Wi-Fi connections.
   • Ensure the Bluetooth device is in pairing mode and within range.

4. Code Upload Fails:

   • Press and hold the BOOT button while uploading the code.
   • Check for any syntax errors or missing libraries in your code.

• Use a multimeter to check power supply voltages and continuity of connections.
• Refer to the Adafruit ESP32-S3 TFT Feather product page for additional resources and support.
• Update the ESP32-S3 board support package and libraries regularly to ensure compatibility.