Published March 18, 2026 © MIT

LoRa powered Garage Door Model using ESP32 and RYLR988

This project demonstrates a wireless garage door control system using LoRa communication between two ESP32-based nodes. The system uses the

BeginnerFull instructions provided2 hours48

Things used in this project

Hardware components

SG90 Micro-servo motor

RYLR988

SparkFun Breadboard Power Supply 5V/3.3V

Jumper wires (generic)

Breadboard (generic)

Espressif ESP32 Development Board - Developer Edition

Software apps and online services

Arduino IDE

Story

Project description

Description

This project demonstrates a wireless garage door control system using LoRa communication between two ESP32-based nodes. The system uses the RYLR988 LoRa Module from REYAX Technology to provide long-range, low-power communication.

The RYLR988 is a LoRa transceiver module that operates in the 862–1020 MHz frequency bands (depending on configuration and regional settings). By combining LoRa with the ESP32 microcontroller, this project creates a reliable remote control system suitable for applications where Wi-Fi or Bluetooth range may be insufficient.

System Overview

The project consists of two ESP32 units, each connected to an RYLR988 module:

Remote Transmitter Unit
Garage Receiver Unit

Remote Transmitter

The remote unit consists of an ESP32 connected to an RYLR988 module and a push button. When the button is pressed, the ESP32 sends a predefined command through the LoRa module. The command is transmitted wirelessly over LoRa to the receiver unit located at the garage.

Garage Receiver

The receiver unit is another ESP32 paired with an RYLR988 module configured to listen for incoming LoRa messages. When a valid command is received from the transmitter, the ESP32 interprets the message and triggers a servo motor connected to the system.

The servo motor is attached to a miniature garage door model. When activated, the servo rotates to lift the garage door, simulating the opening mechanism of a real garage door. The servo can also be programmed to return to its original position to close the door.

Features

Long-range wireless communication using LoRa
Two ESP32 nodes communicating through RYLR988 modules
Simple push-button remote control
Servo-driven garage door mechanism
Demonstrates practical use of LoRa for home automation

Applications

This project demonstrates how LoRa can be used for remote control and home automation systems, especially in scenarios where long range and low power consumption are important. The same concept can be expanded to control gates, industrial equipment, or smart home devices over large distances.

This setup provides a simple but effective example of integrating ESP32 microcontrollers, LoRa communication, and actuator control in a real-world inspired application.

Schematics

Code

#include <Arduino.h>

#define LORA_RX 4 //Change these pins accordingly
#define LORA_TX 5 //Change these pins accordingly

HardwareSerial loraSerial(1);
uint8_t buttonState;
uint8_t lastButtonState = 0;
uint8_t lastPressTime;

void setup() {
  loraSerial.begin(115200, SERIAL_8N1, LORA_RX, LORA_TX);
  pinMode(2, INPUT_PULLUP);

  delay(250);
  loraSerial.write("AT+ADDRESS=0\r\n");
  delay(250);
  loraSerial.write("AT+NETWORKID=18\r\n");
  delay(250);
  loraSerial.write("AT+BAND=865000000\r\n");
}

void loop() {
  static bool doorState = false;
  uint8_t currentReading = digitalRead(2);

  if (lastButtonState != currentReading) {
    if (currentReading == LOW) {
      delay(150);
      if (currentReading == LOW) {
        doorState = !doorState;
        loraSerial.print("AT+SEND=2,1," + String(doorState) + "\r\n");
      }
    }
  }

  lastButtonState = currentReading;
}

#include <ESP32Servo.h>

Servo S1;

#define LORA_RX 26 //Change these pins accordingly
#define LORA_TX 27 //Change these pins accordingly
#define servoPin 14 //Change these pins accordingly
HardwareSerial loraSerial(1);

void driveServo(int a) {
  static int position = 40;

  if (a > position) {
    while (a > position) {
      S1.write(position++);
      delay(10);
    }
  } else if (a < position) {
    while (a < position) {
      S1.write(position--);
      delay(10);
    }
  }
}
void setup() {
  loraSerial.begin(115200, SERIAL_8N1, LORA_RX, LORA_TX);

  ESP32PWM::allocateTimer(0);
  ESP32PWM::allocateTimer(1);
  ESP32PWM::allocateTimer(2);
  ESP32PWM::allocateTimer(3);
  S1.setPeriodHertz(50);
  S1.attach(servoPin, 500, 2500);
  S1.write(40);

  delay(250);
  loraSerial.write("AT+ADDRESS=2\r\n");
  delay(250);
  loraSerial.write("AT+NETWORKID=18\r\n");
  delay(250);
  loraSerial.write("AT+BAND=865000000\r\n"); //Please change the band according to your country laws
}

void loop() {
  if (loraSerial.available()) {
    String data = loraSerial.readStringUntil('\n');
    data = data.substring(9, 10);

    if (data == "1") driveServo(100);
    else if (data = "0") driveServo(40);
  }
}

Credits

devansh_tangri

4 projects • 10 followers

I'm a 17 yo student, making Arduino Projects and Electrical Circuits is my favorite hobby. I have been making circuits for about 8 years.

LoRa powered Garage Door Model using ESP32 and RYLR988

Things used in this project

Hardware components

Software apps and online services

Story

Description

System Overview

Remote Transmitter

Garage Receiver

Features

Applications

Custom parts and enclosures

Garage Housing 3D Model

Garage Door 3D Model

Schematics

Garage Side Wiring Diagram

Remote Side Wiring Diagram

Code

Remote MCU Code

Garage MCU Code

Credits

devansh_tangri

Comments

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LoRa powered Garage Door Model using ESP32 and RYLR988

LoRa powered Garage Door Model using ESP32 and RYLR988

Things used in this project

Hardware components

Software apps and online services

Story

Description

System Overview

Remote Transmitter

Garage Receiver

Features

Applications

Custom parts and enclosures

Garage Housing 3D Model

Garage Door 3D Model

Schematics

Garage Side Wiring Diagram

Remote Side Wiring Diagram

Code

Remote MCU Code

Garage MCU Code

Credits

devansh_tangri

Comments

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