TTGO

TTGO T-Display ESP32 CP2104 WiFi bluetooth Module 1.14 Inch 135 x 240 LCD Development Board LILYGO 2 buttons.

Ttgo T-Watcher Btc Ticker Esp32 2.2 Inch 320X240 Tft Display 3 buttons

See Graphic commands also pic.png picture to pic.h

External link to ESP32 info https://github.com/Xinyuan-LilyGO

Note Working voltage 2.7V-4.2V (USB 5V/1A) supports 3.7V lithium battery

TTGO T-display

PIN Diagram

USB to TTL CP2104

More information:https://github.com/Xinyuan-LilyGO/TTGO-T-Display

Getting started with ESP32 development using the TTGO T-DISPLAY

https://dl.espressif.com/dl/package_esp32_index.json

Board : TTGO LoRa32-OLED V1

Library : TFT_eSPI

Find in the TFT_eSPI directory the User_Setup_Select.h file comment out #include <User_Setup.h> by adding //

Then remove the comment // from Setup25_TTGO_T_Display.h and save.

How to start with TTGO ESP32 T-Display in Arduino IDE

I’m just playing with a TTGO T-Display. https://github.com/Xinyuan-LilyGO/TTGO-T-Display 20

Trying to fire up a little app called TTGO-Show-Voltage, before I get stuck in! However, when compiling, it throws an error,

“TTGO-Show-Voltage:143:31: error: ‘TFT_BACKLIGHT_ON’ was not declared in this scope”

The code explicitly notes that TFT_BACKLIGHT_ON is set in the TFT_eSPI library setup file. And it is! but…

In User_Setup_Select.h you should comment out “#include <User_Setup.h>”

and add “#define TFT_BACKLIGHT_ON HIGH // HIGH or LOW are options”

I also copied

“// ST7789 135 x 240 display with no chip select line

#define ST7789_DRIVER // Configure all registers

#define TFT_WIDTH 135

#define TFT_HEIGHT 240”

To TFT_eSPI.h from TTGO_T_Display.h

(note that the demo code, direct from GitHub has several multiple definitions which is corrected by these changes.)

Compile is now clean

ADC + Hall sensor