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ESP32 with 1.8" TFT LCD Display (ST7735S)

Most 1.8" TFT modules are based on the ST7735 driver and communicate using the SPI (Serial Peripheral Interface) protocol.

Resolution: 128×160 pixels
Interface: SPI
Color depth: 16-bit (65K colors)
Driver IC: ST7735 / ST7735S
Operating voltage: 3.3V logic level (some have onboard regulators for 5V compatibility)
Pins:
- VCC: Power (3.3V or 5V depending on module)
- GND: Ground
- SCL/SCK: SPI Clock
- SDA/MOSI: SPI Data
- RES/RST: Reset
- DC/A0: Data/Command selector
- CS: Chip Select

Assuming the display uses SPI and ESP32's VSPI (default) pins:

✅ Always check your specific TFT module's datasheet; some modules use different pin labels.

Install via Library Manager:

Go to Sketch > Include Library > Manage Libraries, search and install the two libraries above.

Power carefully: If your module has no 3.3V regulator, do not use 5V.
Brightness control: Some modules have LED backlight pins for brightness via PWM.
Performance: ESP32 handles TFTs much better than Arduino Uno due to faster SPI and more memory.

HOW TO OPERATE

#include <Adafruit_GFX.h>

#include<Adafruit_ST7735.h>

#include <SPI.h>

// | Value | Orientation |

// | ----- | ----------------------------- |

// | 0 | Portrait (default) |

// | 1 | Landscape (clockwise) |

// | 2 | Portrait (upside down) |

// | 3 | Landscape (counter-clockwise) |

// tft.initR(INITR_BLACKTAB);

// tft.setRotation(1); // rotate display