Skip to content

TFT Display

TFT Display

Overview

Color TFT display for rich data visualization including charts and graphs.

Specifications

Parameter Value
Model
Type Color TFT LCD
Resolution (e.g., 128x160, 240x320)
Interface SPI
Controller (e.g., ST7735, ILI9341)
Operating Voltage 3.3V
Colors 16-bit (65K colors)

Pinout

Pin Function ESP32 Connection
VCC Power 3.3V
GND Ground GND
SCK SPI Clock GPIO18
MISO SPI MISO GPIO19
MOSI SPI MOSI GPIO23
CS Chip Select GPIO5
DC Data/Command
RST Reset
LED Backlight 3.3V (or PWM)

Wiring Diagram

TFT Display      ESP32
-----------      -----
VCC        -->   3.3V
GND        -->   GND
SCK        -->   GPIO18
MISO       -->   GPIO19
MOSI       -->   GPIO23
CS         -->   GPIO5
DC         -->   <!-- TODO: Add -->
RST        -->   <!-- TODO: Add -->
LED        -->   3.3V (or PWM)

Required Libraries

Common options: - Adafruit_ST7735 or Adafruit_ILI9341 - TFT_eSPI (recommended)

Code Example

Basic Test

// TODO: Add actual library and code from source file

#include <SPI.h>

void setup() {
  Serial.begin(115200);

  // TODO: Add display initialization

  Serial.println("TFT initialized");
}

void loop() {
  // TODO: Add display test code

  delay(1000);
}

Display Sensor Data

// TODO: Add code for displaying sensor data with graphics

Testing

Verification Steps

  1. Upload test code
  2. Check for initialization messages in Serial Monitor
  3. Verify display shows test pattern or text

Troubleshooting

Issue Solution
White/black screen Check initialization sequence, verify SPI connections
Colors wrong Verify correct driver chip selection
Flickering Check power supply, add capacitor near VCC/GND
Slow refresh Optimize code, reduce color depth

Next Steps