How to use RYLR998 LORA module with Arduino

Working with RYLR998 LORA and Arduino Pro Min 8v.

May 30, 2022

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reyax

lora

Components and supplies

Tactile Switch, Top Actuated

RYLR998 LORA from Reyax

LilyPad LED Blue (5pcs)

Arduino Pro Mini 328 - 3.3V/8MHz

Apps and platforms

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;
}

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);
    }
  }
}

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  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);
    }
  }
}

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);
    }
  }
}

Downloadable files

Receiver

Transmitter

Receiver

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mdraber

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