How to use RYLR998 LORA module with Arduino

Working with RYLR998 LORA and Arduino Pro Min 8v.

May 30, 2022

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Communication

Devices & Components

RYLR998 LORA from Reyax

Arduino Pro Mini 328 - 3.3V/8MHz

LilyPad LED Blue (5pcs)

Tactile Switch, Top Actuated

Software & Tools

Arduino IDE

Project description

Code

Transmitter- sending the state of the pushbutton , controlling LED on the receiver

arduino

1int PushButton=7;
2int LED=5;
3
4int LED_state=LOW;
5int Button_state=LOW;
6
7int   Button_newstate;
8
9void setup() {
10 Serial.begin(57600);
11 pinMode(PushButton,   INPUT);
12 pinMode(LED, OUTPUT);
13 Button_state=digitalRead(PushButton); 
14}   
15void loop() {
16  Button_newstate=digitalRead(PushButton);
17  if (Button_newstate   > Button_state) {
18    if (LED_state==LOW){
19      digitalWrite(LED, HIGH);   
20      LED_state=HIGH;
21      Serial.println("AT+SEND=2,1,H");
22    }
23     else {
24      digitalWrite(LED, LOW);
25      LED_state=LOW;
26      Serial.println("AT+SEND=2,1,L");
27     }        
28  }
29  Button_state=Button_newstate;
30}
31

int PushButton=7;
int LED=5;

int LED_state=LOW;
int Button_state=LOW;

int   Button_newstate;

void setup() {
 Serial.begin(57600);
 pinMode(PushButton,   INPUT);
 pinMode(LED, OUTPUT);
 Button_state=digitalRead(PushButton); 
}   
void loop() {
  Button_newstate=digitalRead(PushButton);
  if (Button_newstate   > Button_state) {
    if (LED_state==LOW){
      digitalWrite(LED, HIGH);   
      LED_state=HIGH;
      Serial.println("AT+SEND=2,1,H");
    }
     else {
      digitalWrite(LED, LOW);
      LED_state=LOW;
      Serial.println("AT+SEND=2,1,L");
     }        
  }
  Button_state=Button_newstate;
}

Receiver - receiving the state of the pushbutton and setting LED state based on that information

arduino

1#define LEDPin 6
2String incomingstring;
3
4void setup() {
5  pinMode(LEDPin,OUTPUT);
6   Serial.begin(115200);
7}
8void loop() {
9  if(Serial.available()){ 
10     incomingstring= Serial.readString();
11    if (incomingstring.indexOf("H")   >0) {
12      digitalWrite(LEDPin, HIGH);
13    }
14    else if (incomingstring.indexOf("L")   >0) { 
15      digitalWrite(LEDPin, LOW);
16    }
17  }
18}
19

#define LEDPin 6
String incomingstring;

void setup() {
  pinMode(LEDPin,OUTPUT);
   Serial.begin(115200);
}
void loop() {
  if(Serial.available()){ 
     incomingstring= Serial.readString();
    if (incomingstring.indexOf("H")   >0) {
      digitalWrite(LEDPin, HIGH);
    }
    else if (incomingstring.indexOf("L")   >0) { 
      digitalWrite(LEDPin, LOW);
    }
  }
}

Receiver - receiving the state of the pushbutton and setting LED state based on that information

arduino

1#define LEDPin 6
2String incomingstring;
3
4void setup() {
5  pinMode(LEDPin,OUTPUT);
6
7  Serial.begin(115200);
8}
9void loop() {
10  if(Serial.available()){ 
11
12    incomingstring= Serial.readString();
13    if (incomingstring.indexOf("H")
14  >0) {
15      digitalWrite(LEDPin, HIGH);
16    }
17    else if (incomingstring.indexOf("L")
18  >0) { 
19      digitalWrite(LEDPin, LOW);
20    }
21  }
22}
23

#define LEDPin 6
String incomingstring;

void setup() {
  pinMode(LEDPin,OUTPUT);

  Serial.begin(115200);
}
void loop() {
  if(Serial.available()){ 

    incomingstring= Serial.readString();
    if (incomingstring.indexOf("H")
  >0) {
      digitalWrite(LEDPin, HIGH);
    }
    else if (incomingstring.indexOf("L")
  >0) { 
      digitalWrite(LEDPin, LOW);
    }
  }
}

Transmitter- sending the state of the pushbutton , controlling LED on the receiver

arduino

1int PushButton=7;
2int LED=5;
3
4int LED_state=LOW;
5int Button_state=LOW;
6
7int
8  Button_newstate;
9
10void setup() {
11 Serial.begin(57600);
12 pinMode(PushButton,
13  INPUT);
14 pinMode(LED, OUTPUT);
15 Button_state=digitalRead(PushButton); 
16}
17  
18void loop() {
19  Button_newstate=digitalRead(PushButton);
20  if (Button_newstate
21  > Button_state) {
22    if (LED_state==LOW){
23      digitalWrite(LED, HIGH);
24  
25      LED_state=HIGH;
26      Serial.println("AT+SEND=2,1,H");
27    }
28
29    else {
30      digitalWrite(LED, LOW);
31      LED_state=LOW;
32      Serial.println("AT+SEND=2,1,L");
33
34    }        
35  }
36  Button_state=Button_newstate;
37}
38

int PushButton=7;
int LED=5;

int LED_state=LOW;
int Button_state=LOW;

int
  Button_newstate;

void setup() {
 Serial.begin(57600);
 pinMode(PushButton,
  INPUT);
 pinMode(LED, OUTPUT);
 Button_state=digitalRead(PushButton); 
}
  
void loop() {
  Button_newstate=digitalRead(PushButton);
  if (Button_newstate
  > Button_state) {
    if (LED_state==LOW){
      digitalWrite(LED, HIGH);
  
      LED_state=HIGH;
      Serial.println("AT+SEND=2,1,H");
    }

    else {
      digitalWrite(LED, LOW);
      LED_state=LOW;
      Serial.println("AT+SEND=2,1,L");

    }        
  }
  Button_state=Button_newstate;
}

Receiving state of the pushbutton and controlling the LED with Displaying received data on OLED

arduino

1#include <SPI.h>
2#include <Wire.h>
3#include <Adafruit_GFX.h>
4#include
5  <Adafruit_SSD1306.h>
6
7// Oled display size
8#define SCREEN_WIDTH 128 //
9  OLED display width, in pixels
10#define SCREEN_HEIGHT 64 // OLED display height,
11  in pixels
12
13
14#define OLED_RESET     4 // Reset pin # (or -1 if sharing Arduino
15  reset pin)
16  Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);
17
18
19
20#define
21  LEDPin 6
22String incomingstring;
23
24 
25String inString;
26
27void setup()
28  {
29  Serial.begin(57600);
30    // SSD1306_SWITCHCAPVCC = generate display voltage
31  from 3.3V internally
32  if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) { // Address
33  0x3D for 128x64
34    Serial.println(F("SSD1306 allocation failed"));
35    for(;;);
36  // Don't proceed, loop forever
37  }
38
39  // Show initial display buffer contents
40  on the screen --
41  // the library initializes this with an Adafruit splash screen.
42
43  display.display();
44  delay(2000); // Pause for 2 seconds
45  display.clearDisplay();
46
47  display.setTextSize(1);           
48  display.fillRect(0, 0, 128, 15, SSD1306_INVERSE);
49
50  display.setTextColor(SSD1306_BLACK);  
51  display.setCursor(4,4); 
52  display.println("RECEIVING:
53  ");
54  display.println("");
55  display.setTextColor(SSD1306_WHITE);
56  display.display();
57
58  pinMode(LEDPin,OUTPUT);
59  digitalWrite(LEDPin,LOW);
60}
61int Received;
62
63void
64  loop() {
65  if(Serial.available()){ 
66    incomingstring= Serial.readString();
67
68    display.print(incomingstring);
69    display.display();
70    if (incomingstring.indexOf("H")
71  >0) { 
72      digitalWrite(LEDPin, HIGH);
73    }
74    else if (incomingstring.indexOf("L")
75  >0) { 
76      digitalWrite(LEDPin, LOW);
77    }
78  }
79}

#include <SPI.h>
#include <Wire.h>
#include <Adafruit_GFX.h>
#include
  <Adafruit_SSD1306.h>

// Oled display size
#define SCREEN_WIDTH 128 //
  OLED display width, in pixels
#define SCREEN_HEIGHT 64 // OLED display height,
  in pixels


#define OLED_RESET     4 // Reset pin # (or -1 if sharing Arduino
  reset pin)
  Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);



#define
  LEDPin 6
String incomingstring;

 
String inString;

void setup()
  {
  Serial.begin(57600);
    // SSD1306_SWITCHCAPVCC = generate display voltage
  from 3.3V internally
  if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) { // Address
  0x3D for 128x64
    Serial.println(F("SSD1306 allocation failed"));
    for(;;);
  // Don't proceed, loop forever
  }

  // Show initial display buffer contents
  on the screen --
  // the library initializes this with an Adafruit splash screen.

  display.display();
  delay(2000); // Pause for 2 seconds
  display.clearDisplay();

  display.setTextSize(1);           
  display.fillRect(0, 0, 128, 15, SSD1306_INVERSE);

  display.setTextColor(SSD1306_BLACK);  
  display.setCursor(4,4); 
  display.println("RECEIVING:
  ");
  display.println("");
  display.setTextColor(SSD1306_WHITE);
  display.display();

  pinMode(LEDPin,OUTPUT);
  digitalWrite(LEDPin,LOW);
}
int Received;

void
  loop() {
  if(Serial.available()){ 
    incomingstring= Serial.readString();

    display.print(incomingstring);
    display.display();
    if (incomingstring.indexOf("H")
  >0) { 
      digitalWrite(LEDPin, HIGH);
    }
    else if (incomingstring.indexOf("L")
  >0) { 
      digitalWrite(LEDPin, LOW);
    }
  }
}

Receiving state of the pushbutton and controlling the LED with Displaying received data on OLED

arduino

1#include <SPI.h>
2#include <Wire.h>
3#include <Adafruit_GFX.h>
4#include   <Adafruit_SSD1306.h>
5
6// Oled display size
7#define SCREEN_WIDTH 128 //   OLED display width, in pixels
8#define SCREEN_HEIGHT 64 // OLED display height,   in pixels
9
10
11#define OLED_RESET     4 // Reset pin # (or -1 if sharing Arduino   reset pin)
12  Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);
13
14
15
16#define   LEDPin 6
17String incomingstring;
18
19 
20String inString;
21
22void setup()   {
23  Serial.begin(57600);
24    // SSD1306_SWITCHCAPVCC = generate display voltage   from 3.3V internally
25  if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) { // Address   0x3D for 128x64
26    Serial.println(F("SSD1306 allocation failed"));
27    for(;;);   // Don't proceed, loop forever
28  }
29
30  // Show initial display buffer contents   on the screen --
31  // the library initializes this with an Adafruit splash screen.
32   display.display();
33  delay(2000); // Pause for 2 seconds
34  display.clearDisplay();
35   display.setTextSize(1);           
36  display.fillRect(0, 0, 128, 15, SSD1306_INVERSE);
37   display.setTextColor(SSD1306_BLACK);  
38  display.setCursor(4,4); 
39  display.println("RECEIVING:   ");
40  display.println("");
41  display.setTextColor(SSD1306_WHITE);
42  display.display();
43   pinMode(LEDPin,OUTPUT);
44  digitalWrite(LEDPin,LOW);
45}
46int Received;
47
48void   loop() {
49  if(Serial.available()){ 
50    incomingstring= Serial.readString();
51     display.print(incomingstring);
52    display.display();
53    if (incomingstring.indexOf("H")   >0) { 
54      digitalWrite(LEDPin, HIGH);
55    }
56    else if (incomingstring.indexOf("L")   >0) { 
57      digitalWrite(LEDPin, LOW);
58    }
59  }
60}

#include <SPI.h>
#include <Wire.h>
#include <Adafruit_GFX.h>
#include   <Adafruit_SSD1306.h>

// Oled display size
#define SCREEN_WIDTH 128 //   OLED display width, in pixels
#define SCREEN_HEIGHT 64 // OLED display height,   in pixels


#define OLED_RESET     4 // Reset pin # (or -1 if sharing Arduino   reset pin)
  Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);



#define   LEDPin 6
String incomingstring;

 
String inString;

void setup()   {
  Serial.begin(57600);
    // SSD1306_SWITCHCAPVCC = generate display voltage   from 3.3V internally
  if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) { // Address   0x3D for 128x64
    Serial.println(F("SSD1306 allocation failed"));
    for(;;);   // Don't proceed, loop forever
  }

  // Show initial display buffer contents   on the screen --
  // the library initializes this with an Adafruit splash screen.
   display.display();
  delay(2000); // Pause for 2 seconds
  display.clearDisplay();
   display.setTextSize(1);           
  display.fillRect(0, 0, 128, 15, SSD1306_INVERSE);
   display.setTextColor(SSD1306_BLACK);  
  display.setCursor(4,4); 
  display.println("RECEIVING:   ");
  display.println("");
  display.setTextColor(SSD1306_WHITE);
  display.display();
   pinMode(LEDPin,OUTPUT);
  digitalWrite(LEDPin,LOW);
}
int Received;

void   loop() {
  if(Serial.available()){ 
    incomingstring= Serial.readString();
     display.print(incomingstring);
    display.display();
    if (incomingstring.indexOf("H")   >0) { 
      digitalWrite(LEDPin, HIGH);
    }
    else if (incomingstring.indexOf("L")   >0) { 
      digitalWrite(LEDPin, LOW);
    }
  }
}

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