Specifications

Hardware Specifications
ChipsetESPRESSIF-ESP32 240MHz Xtensa® single-/dual-core 32-bit LX6 microprocessor
FLASHQSPI flash 4MB /16MB
SRAM 520 kB SRAM
ButtonReset
Modular interfaceUART、SPI、SDIO、I2C、LED PWM、TV PWM、I2S、IRGPIO、ADC、capacitor touch sensor、DACLNA  pre-amplifier
Display

IPS ST7789V 1.14 Inch

Resolution: 135 x 240

Working voltage2.7V-4.2V
Working currentAbout 67MA
Sleep currentAbout 350uA
Working temperature range-40℃ ~ +85℃
Size&Weight51.52*25.04*8.54mm(7.81g)

 

Power Supply Specifications

Power SupplyUSB 5V/1A
Charging current500mA
Battery3.7V lithium battery
JST Connector2Pin 1.25mm
USBType-C


Wi-Fi


StandardFCC/CE-RED/IC/TELEC/KCC/SRRC/NCC(esp32 chip)
Protocol802.11 b/g/n(802.11n,speed up to150Mbps)A-MPDU and A-MSDU polymerization,support 0.4μS Protection interval
Frequency range2.4GHz~2.5GHz(2400M~2483.5M)
Transmit Power22dBm
Communication distance300m


Bluetooth


ProtocolMeet bluetooth v4.2BR/EDR and BLE standard
Radio frequencyWith -97dBm sensitivity NZIF receiver Class-1,Class-2&Class-3 emitter AFH
Audio frequencyCVSD&SBC audio frequency


Software specification

Wi-Fi ModeStation/SoftAP/SoftAP+Station/P2P
Security mechanismWPA/WPA2/WPA2-Enterprise/WPS
Encryption Type AES/RSA/ECC/SHA
Firmware upgradeUART download/OTA(Through network/host to download and write firmware)
Software DevelopmentSupport cloud server development /SDK for user firmware development
Networking protocolIPv4、IPv6、SSL、TCP/UDP/HTTP/FTP/MQTT
User ConfigurationAT + Instruction set, cloud server, android/iOSapp
OSFreeRTOS


Github Link

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


git clone https://github.com/Xinyuan-LilyGO/TTGO-T-Display.git
cd TTGO-T-Display
cp -R TFT_eSPI ~/Documents/Arduino/libraries/.


Pinout



Schematic

ESP32-TFT(6-26).pdf


Install the Serial Driver

https://www.wch.cn/downloads/CH34XSER_MAC_ZIP.html

See instructions in PDF

Arduino 

Install Board Manager

Install the board manager for ESP32. Click Arduino → preferences and add the url for the ESP32 board manager.

ESP32 Board Manager URL: https://raw.githubusercontent.com/espressif/arduino-esp32/gh-pages/package_esp32_index.json

Install the ESP32 board by selecting Tools → Board Manager and inputing esp32. Install the latest version.


Select Board

Select the TTGO Lora32-OLED board

Optional, select the development board ESP32 Dev Module, select Disable in the PSRAM option, select 4-16MB in the Flash Size option, Other keep the default

Note, the port should start with cu.wchubserial.


Install the TFT_eSPI Library

From the Library Manager, search for the TFT_eSPI library by Bodmer and click Install.

After installing the library, browse to it's location and modify the User_Setup_Select.h file located in ~/Documents/Arduino/libraries/.

Comment out the line:

//#include <User_Setup.h>


Uncomment the line:

#include <User_Setups/Setup25_TTGO_T_Display.h>    // Setup file for ESP32 and TTGO T-Display ST7789V SPI bus TFT






Color Picker Example

#include <TFT_eSPI.h> 
#include "orbitron20.h"  
TFT_eSPI    tft = TFT_eSPI();         // Create object "tft"
TFT_eSprite img = TFT_eSprite(&tft);

#define gray 0x94B2

const int pwmFreq = 5000;
const int pwmResolution = 8;
const int pwmLedChannelTFT = 0;
int brightnes=80;

uint16_t color2=TFT_WHITE;
uint16_t color1=TFT_BLACK;

void setup() {
  pinMode(35,INPUT_PULLUP);
  pinMode(12,INPUT_PULLUP);
  pinMode(27,INPUT_PULLUP);
  pinMode(26,INPUT_PULLUP);
  pinMode(0,INPUT_PULLUP);
  tft.init();
  tft.fillScreen(TFT_WHITE);
  tft.setRotation(1);
  img.setFreeFont(&Orbitron_Medium_18);
  img.setTextColor(color1,color2);
  img.createSprite(240, 135);
  ledcSetup(pwmLedChannelTFT, pwmFreq, pwmResolution);
  ledcAttachPin(TFT_BL, pwmLedChannelTFT);
  ledcWrite(pwmLedChannelTFT, brightnes);

}

void loop() {
drawS();
}

void drawS()
{
img.setTextColor(color1,color2);
img.fillSprite(color2);
int r=map(analogRead(2),4095,0,0,255); 
int g=map(analogRead(15),4095,0,0,255); 
int b=map(analogRead(13),4095,0,0,255); 

img.drawRect(4,24,132,20,gray);
img.drawRect(4,68,132,20,gray);
img.drawRect(4,112,132,20,gray);

img.drawString("RED: "+String(r),6,0);
img.fillRect(6,26,r/2,16,TFT_RED);
img.drawString("GREEN: "+String(g),6,44);
img.fillRect(6,70,g/2,16,TFT_GREEN);
img.drawString("BLUE: "+String(b),6,88);
img.fillRect(6,114,b/2,16,TFT_BLUE);

if(digitalRead(26)==0)
{
brightnes=map(analogRead(13),4095,0,0,255); 
ledcWrite(pwmLedChannelTFT, brightnes); 
}





 uint16_t chosen=tft.color565(r, g, b);
 img.drawString("COLOR",148,0);
 img.drawString("0x"+String(chosen,HEX),148,90,4);
 img.drawString("BRIGHT: "+String(brightnes),148,118,2);
 img.fillRect(148,24,80,62,chosen);
 img.drawRect(146,22,84,66,gray);

 if(digitalRead(12)==0)
color1=chosen;

 if(digitalRead(27)==0)
color2=chosen;

 if(digitalRead(0)==0)
{ color1=TFT_BLACK; color2=TFT_WHITE;}

 if(digitalRead(35)==0)
{
img.fillScreen(color2);
img.drawString("text:0x"+String(color1,HEX),6,10,4); 
img.drawString("back:0x"+String(color2,HEX),6,30,4); 
img.drawString("select:0x:"+String(chosen,HEX),6,50,4); 
}

img.pushSprite(0,0);
}


Loading an Image

Find an image no bigger than the screen resolution (135 x 240).


Try: https://iconarchive.com/


Convert to .c with the following converter:

http://www.rinkydinkelectronics.com/t_imageconverter565.php


Rename output file to .h

#include <TFT_eSPI.h> 
#include "bmp.h"

...

void initScreen(){

  tft.init();
  tft.setRotation(1);
  tft.fillScreen(TFT_BLACK);
  tft.setTextSize(2);
  tft.setTextColor(TFT_GREEN);
  tft.setCursor(0, 0);
  tft.setTextDatum(MC_DATUM);
  tft.setTextSize(1);

  tft.setSwapBytes(true);
  tft.pushImage(0, 0,  240, 135, ttgo);
  espDelay(5000);
}


Using Fonts


#include "orbitron10.h" 
#include <TFT_eSPI.h> 
#include "bmp.h"

...

void initScreen(){

  tft.init();
  tft.setRotation(1);
  tft.setTextColor(TFT_GREEN);
  tft.setCursor(0, 0);
  tft.setFreeFont(&Orbitron_Medium_10);

  tft.fillScreen(TFT_BLACK);
  tft.setTextDatum(MC_DATUM);
  tft.drawString("CHARGING",  tft.width() / 2, tft.height() / 2 );
}


Generating a Font File

Navigate to https://oleddisplay.squix.ch

Download or copy generated output to include file.

ie. 

orbitron10.h



References

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