Buy 2Pcs LILYGO TTGO LORA SX1278 ESP32 0.96 OLED Display Module 16 Mt Bytes 128 Mt bit) 433Mhz best price

Update information:

Note: After the product is updated, the Bluetooth has been built-in ESP32 chip, and the user only needs to burn the Bluetooth program to use the Bluetooth function.

Product Description:

The 433MHz antenna must be used in conjunction with the IPEX interface (if the antenna is not connected, it may damage the LoRa chip)
Lithium battery charging and discharging circuit, when the battery is full, the blue LED will stop working. When using, pay attention to the positive and negative of the battery, otherwise it will be damaged.
Using the IO port touch screen touch signal input, you need to add the 100nF pull-down capacitor at this pin!

Pin reference description:

For more product information, click https://drive.google.com/file/d/1L8ll-DeAC2SATBZn0-KbSaZsrinbnXkF/view

Test details:

Click links for more details: https://eyun.baidu.com/s/3hsiTNgg

Note:This product does not include the battery.

Package included:

2 x ESP32 OLED
2 x Line
4 x pin
2 x 433m Spring Antenna

For example One:

(1) LoRaSender
#include
#include
#include
// GPIO5  — SX1278’s SCK
// GPIO19 — SX1278’s MISO
// GPIO27 — SX1278’s M0SI
// GPIO18 — SX1278’s CS
// GPIO14 — SX1278’s RESET
// GPIO26 — SX1278’s IRQ(Interrupt Request)
 
#define SS      18
#define RST     14
#define DI0     26
#define BAND    433E6  
int counter = 0;
 
void setup() {
  pinMode(25,OUTPUT); //Send success, LED will bright 1 second
  
  Serial.begin(115200);
  while (!Serial); //If just the the basic function, must connect to a computer
  
  SPI.begin(5,19,27,18);
  LoRa.setPins(SS,RST,DI0);
//  Serial.println(‘LoRa Sender’);
 
  if (!LoRa.begin(BAND)) {
    Serial.println(‘Starting LoRa failed!’);
    while (1);
  }
  Serial.println(‘LoRa Initial OK!’);
}
 
void loop() {
  Serial.print(‘Sending packet: ‘);
  Serial.println(counter);
 
  // send packet
  LoRa.beginPacket();
  LoRa.print(‘hello ‘);
  LoRa.print(counter);
  LoRa.endPacket();
 
  counter++;
  digitalWrite(25, HIGH);   // turn the LED on (HIGH is the voltage level)
  delay(1000);                       // wait for a second
  digitalWrite(25, LOW);    // turn the LED off by making the voltage LOW
  delay(1000);                       // wait for a second
  
  delay(3000);
}
 
For example Two
(2)LoRaReceiver
#include
#include
 
 
// GPIO5  — SX1278’s SCK
// GPIO19 — SX1278’s MISO
// GPIO27 — SX1278’s M0SI
// GPIO18 — SX1278’s CS
// GPIO14 — SX1278’s RESET
// GPIO26 — SX1278’s IRQ(Interrupt Request)
 
#define SS      18
#define RST     14
#define DI0     26
#define BAND    433E6
 
void setup() {
  Serial.begin(115200);
  while (!Serial); //if just the the basic function, must connect to a computer
  delay(1000);
  
  Serial.println(‘LoRa Receiver’);
  
  SPI.begin(5,19,27,18);
  LoRa.setPins(SS,RST,DI0);
  
  if (!LoRa.begin(BAND)) {
    Serial.println(‘Starting LoRa failed!’);
    while (1);
  }
}
 
void loop() {
  // try to parse packet
  int packetSize = LoRa.parsePacket();
  if (packetSize) {
// received a packet
    Serial.print(‘Received packet ”);
 
    // read packet
    while (LoRa.available()) {
      Serial.print((char)LoRa.read());
    }
 
    // print RSSI of packet
    Serial.print(” with RSSI ‘);
    Serial.println(LoRa.packetRssi());
  }
}
 
For example three
(3)LoRaReceiverCallback
#include
#include
 
 
 
// GPIO5  — SX1278’s SCK
// GPIO19 — SX1278’s MISO
// GPIO27 — SX1278’s M0SI
// GPIO18 — SX1278’s CS
// GPIO14 — SX1278’s RESET
// GPIO26 — SX1278’s IRQ(Interrupt Request)
 
#define SS      18
#define RST     14
#define DI0     26
#define BAND    433E6
 
void setup() {
  Serial.begin(115200);
  while (!Serial); //if just the the basic function, must connect to a computer
 
  SPI.begin(5,19,27,18);
  LoRa.setPins(SS,RST,DI0);
  
  Serial.println(‘LoRa Receiver Callback’);
 
  if (!LoRa.begin(BAND)) {
    Serial.println(‘Starting LoRa failed!’);
    while (1);
 }
 
  // register the receive callback
  LoRa.onReceive(onReceive);
 
  // put the radio into receive mode
  LoRa.receive();
}
 
void loop() {
  // do nothing
}
 
void onReceive(int packetSize) {
  // received a packet
  Serial.print(‘Received packet ”);
 
  // read packet
  for (int i = 0; i < packetSize; i++) {
    Serial.print((char)LoRa.read());
  }
 
  // print RSSI of packet
  Serial.print(” with RSSI ‘);
  Serial.println(LoRa.packetRssi());
}
?
For example four
#include  // Only needed for 1.6.5 and earlier
#include ‘SSD1306.h’ // alias for `#include ‘SSD1306Wire.h’`
#include ‘images.h’
 
//OLED pins to ESP32 0.96OLEDGPIOs via this connecthin:
//OLED_SDA — GPIO4
//OLED_SCL — GPIO15
//OLED_RST — GPIO16
 
SSD1306  display(0x3c, 4, 15);
 
#define DEMO_DURATION 3000
typedef void (*Demo)(void);
int demoMode = 0;
int counter = 1;
 
void setup() {
  pinMode(16,OUTPUT);
  digitalWrite(16, LOW);    // set GPIO16 low to reset OLED
  delay(50);
  digitalWrite(16, HIGH); // while OLED is running, must set GPIO16 in high
  
  Serial.begin(115200);
  Serial.println();
  Serial.println();
 
 
  // Initialising the UI will init the display too.
  display.init();
 
  display.flipScreenVertically();
  display.setFont(ArialMT_Plain_10);
 
}
 
void drawFontFaceDemo() {
    // Font Demo1
    // create more fonts at http://oleddisplay.squix.ch/
    display.setTextAlignment(TEXT_ALIGN_LEFT);
    display.setFont(ArialMT_Plain_10);
    display.drawString(0, 0, ‘Hello world’);
    display.setFont(ArialMT_Plain_16);
    display.drawString(0, 10, ‘Hello world’);
    display.setFont(ArialMT_Plain_24);
    display.drawString(0, 26, ‘Hello world’);
}
 
void drawTextFlowDemo() {
    display.setFont(ArialMT_Plain_10);
    display.setTextAlignment(TEXT_ALIGN_LEFT);
    display.drawStringMaxWidth(0, 0, 128,
      ‘Lorem ipsumn dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore.’ );
}
 
void drawTextAlignmentDemo() {
    // Text alignment demo
display.setFont(ArialMT_Plain_10);
 
  // The coordinates define the left starting point of the text
  display.setTextAlignment(TEXT_ALIGN_LEFT);
  display.drawString(0, 10, ‘Left aligned (0,10)’);
 
  // The coordinates define the center of the text
  display.setTextAlignment(TEXT_ALIGN_CENTER);
  display.drawString(64, 22, ‘Center aligned (64,22)’);
 
  // The coordinates define the right end of the text
  display.setTextAlignment(TEXT_ALIGN_RIGHT);
  display.drawString(128, 33, ‘Right aligned (128,33)’);
}
 
void drawRectDemo() {
      // Draw a pixel at given position
    for (int i = 0; i < 10; i++) {
      display.setPixel(i, i);
      display.setPixel(10 – i, i);
    }
    display.drawRect(12, 12, 20, 20);
 
    // Fill the rectangle
    display.fillRect(14, 14, 17, 17);
 
    // Draw a line horizontally
    display.drawHorizontalLine(0, 40, 20);
 
    // Draw a line horizontally
    display.drawVerticalLine(40, 0, 20);
}
 
void drawCircleDemo() {
  for (int i=1; i < 8; i++) {
    display.setColor(WHITE);
    display.drawCircle(32, 32, i*3);
    if (i % 2 == 0) {
      display.setColor(BLACK);
    }
    display.fillCircle(96, 32, 32 – i* 3);
  }
}
void drawProgressBarDemo() {
  int progress = (counter / 5) % 100;
  // draw the progress bar
  display.drawProgressBar(0, 32, 120, 10, progress);
 
  // draw the percentage as String
  display.setTextAlignment(TEXT_ALIGN_CENTER);
  display.drawString(64, 15, String(progress) + ‘%’);
}
 
void drawImageDemo() {
    // see http://blog.squix.org/2015/05/esp8266-nodemcu-how-to-create-xbm.html
    // on how to create xbm files
    display.drawXbm(34, 14, WiFi_Logo_width, WiFi_Logo_height, WiFi_Logo_bits);
}
 
Demo demos[] = {drawFontFaceDemo, drawTextFlowDemo, drawTextAlignmentDemo, drawRectDemo, drawCircleDemo, drawProgressBarDemo, drawImageDemo};
int demoLength = (sizeof(demos) / sizeof(Demo));
long timeSinceLastModeSwitch = 0;
 
void loop() {
  // clear the display
  display.clear();
  // draw the current demo method
  demos[demoMode]();
 
  display.setTextAlignment(TEXT_ALIGN_RIGHT);
  display.drawString(10, 128, String(millis()));
  // write the buffer to the display
  display.display();
 
  if (millis() – timeSinceLastModeSwitch > DEMO_DURATION) {
    demoMode = (demoMode + 1)  % demoLength;
    timeSinceLastModeSwitch = millis();
  }
  counter++;
  delay(10);
}