writing codex

[saeeds125]

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I have a 1.8 inch TFT display that I want to use with SP32 and need help setting it up. Can you give me a code that I can compile without any problems or errors in the Arduino Droid environment? I'm getting errors with every code I've tried so far.

[v-ember]

Hey there! 👋

Thanks for posting in the GitHub Community, @saeeds125! You are more likely to get a useful response if you are posting in the applicable category. The Accessibility category is a place for our community to discuss and provide feedback on the digital accessibility of GitHub products. Digital accessibility means that GitHub tools, and technologies, are designed and developed so that people with disabilities can use them.

I've gone ahead and moved this to the correct category for you. Good luck!

[beenish-majeed]

Hi @saeeds125, assuming “SP32” means an ESP32, whether a sketch compiles and works depends on which controller your TFT uses. A 1.8" TFT can use different controllers, and each may require a different library and initialization, so giving you a generic sketch now would likely just cause another set of errors.

Please provide:

• The TFT controller/model number from the module or seller's listing. If you don't know it, a clear photo of the front and back is fine.
• The TFT pin labels and how you've connected them to the ESP32.
• The exact ESP32 board model and board package version selected in ArduinoDroid.
• The display library name and version you're using.
• The complete compiler output, starting with the first error.

If one of the library's basic TFT examples also fails to compile, mention that too. That helps determine whether the problem is the sketch, the library, or the ESP32/ArduinoDroid setup.

Once those details are posted, the sketch can be matched to your exact ESP32 + TFT combination instead of guessing at the controller or pinout.

[Jyotir2004]

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Hello everyone,

I have a 1.8-inch TFT display that I would like to use with an ESP32, but I'm having trouble getting it working.

I'm using ArduinoDroid on Android to write and compile my Arduino code. Unfortunately, almost every example I've tried so far gives me compilation errors.

Could someone please provide a complete, tested ESP32 + 1.8-inch TFT example that I can compile in ArduinoDroid without errors?

I would particularly appreciate help with:

• The required Arduino libraries
• Correct ESP32 pin connections
• A basic initialization example
• A simple test that displays text or colors on the TFT
• Any ArduinoDroid-specific setup or library requirements

I'm not sure which TFT controller my display uses, so if the controller needs to be identified first, please let me know how I can determine whether it is ST7735, ST7789, ILI9163, or another controller.

If possible, please provide the code and wiring based on the exact controller once identified.

Thank you!

[beenish-majeed]

Hi @Jyotir2004, the controller is the key detail here. A 1.8" TFT can use different controllers, so screen size alone isn't enough to choose the right library or initialization.

How to identify it:

• Look for a printed controller or chip name on the module (for example ST7735 or ST7735S).
• Check the seller's listing or datasheet. The resolution can also help: a 1.8" module that is 128x160 is often an ST7735, although that isn't guaranteed.
• If neither gives you the answer, post a clear photo of the front and back of the module.

Please post the controller name (or the photo) and, if a sketch doesn't compile, the complete compiler output starting from the first error. Those two things are the most useful starting points. The ArduinoDroid version, ESP32 board package version, and library versions can be provided afterward if needed.

If the display is confirmed as an ST7735 (128x160), here is an example wiring for a typical ESP32 DevKit. Check your own board's pinout before using these GPIO numbers, and check your module's specifications before connecting the backlight directly to 3.3V, since some modules need a resistor or handle the backlight differently.

TFT	ESP32
VCC	3.3V
GND	GND
SCK / SCL	GPIO 18
SDA / MOSI	GPIO 23
CS	GPIO 5
DC / A0	GPIO 2
RST	GPIO 4
LED / BL	3.3V

Install the Adafruit GFX Library and the Adafruit ST7735 and ST7789 Library, then try this ST7735 example:

#include <SPI.h>
#include <Adafruit_GFX.h>
#include <Adafruit_ST7735.h>
#define TFT_CS  5

#define TFT_DC  2

#define TFT_RST 4
Adafruit_ST7735 tft(TFT_CS, TFT_DC, TFT_RST);
void setup() {

tft.initR(INITR_BLACKTAB);

tft.fillScreen(ST77XX_BLACK);
tft.setTextColor(ST77XX_WHITE);

tft.setTextSize(2);

tft.setCursor(10, 10);

tft.println("Hello ESP32");

}
void loop() {

}

If it doesn't compile, the display hardware itself is not causing the compiler error. First check that the ESP32 board package and both libraries are installed and recognized by ArduinoDroid, and post the first compiler error if it still fails. I can't confirm how well ArduinoDroid supports your particular ESP32 board and library setup, so that may be part of the problem.

If it compiles but the display looks wrong (for example, shifted edges, incorrect colors, or an offset image), the controller may be correct but the module may require a different initialization setting such as INITR_GREENTAB or INITR_REDTAB, or the wiring/pinout may need to be checked.

I haven't tested this exact setup on your hardware or in ArduinoDroid, so treat it as a starting point rather than a guaranteed tested configuration.