Comments on: Decode and Send 433 MHz RF Signals with Arduino https://randomnerdtutorials.com/decode-and-send-433-mhz-rf-signals-with-arduino/ Learn ESP8266, ESP32, Arduino, and Raspberry Pi Wed, 25 Jun 2025 02:32:56 +0000 hourly 1 https://wordpress.org/?v=6.8.2 By: Gabriel https://randomnerdtutorials.com/decode-and-send-433-mhz-rf-signals-with-arduino/#comment-1060743 Wed, 25 Jun 2025 02:32:56 +0000 http://randomnerdtutorials.com/?p=48715#comment-1060743 how it works with esp32? i cant to compile because i dont know how to configure the input pin

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By: Petko Kulaksazov https://randomnerdtutorials.com/decode-and-send-433-mhz-rf-signals-with-arduino/#comment-1053570 Mon, 02 Jun 2025 15:41:03 +0000 http://randomnerdtutorials.com/?p=48715#comment-1053570 Hello, Sara, Rui!

I want to use an esp32-s3 Zero instead of an Arduino UNO. What should I do to tell the rc-switch which pin the RF receiver is on and which interrupt number the esp32-s3 Zero should use?

Thanks in advance!
Best regards!

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By: David P https://randomnerdtutorials.com/decode-and-send-433-mhz-rf-signals-with-arduino/#comment-1028322 Thu, 17 Apr 2025 21:40:52 +0000 http://randomnerdtutorials.com/?p=48715#comment-1028322 I’d love to implement this code on ESP32, but using a different pin/interrupt. I’ve built a simple transmit/receive pair using the radiohead library on pin D27, and would like to do something similar with this example. I’m a bit unclear how to adjust the mySwitch.enableReceive(0; to use another pin. Any guidance is appreciated.

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By: Dondi Daniele https://randomnerdtutorials.com/decode-and-send-433-mhz-rf-signals-with-arduino/#comment-987373 Thu, 28 Nov 2024 21:47:54 +0000 http://randomnerdtutorials.com/?p=48715#comment-987373 In reply to Rui Santos.

Sometimes you need to connect an antenna or at least a piece of wire to the antenna output to increase the gain

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By: Scott Clute https://randomnerdtutorials.com/decode-and-send-433-mhz-rf-signals-with-arduino/#comment-974579 Mon, 21 Oct 2024 18:17:36 +0000 http://randomnerdtutorials.com/?p=48715#comment-974579 Question- Looking for a way to receive/decode a 433 signal and convert that to TCP or OSC message- any suggestions as to where to start reading?

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By: Mmdrez https://randomnerdtutorials.com/decode-and-send-433-mhz-rf-signals-with-arduino/#comment-947533 Sun, 11 Aug 2024 21:01:26 +0000 http://randomnerdtutorials.com/?p=48715#comment-947533 Hello, I have received the binary codes for my remote control using a receiver module, and now I intend to send the binary codes by pressing a button. However, the transmitter is not working. Could the issue be with the code I am using for the transmitter? I want to send the binary codes through the transmitter by pressing the buttons connected to digital pins 4, 5, 6, and 7 on the Arduino board. The code used is as follows:

#include <RCSwitch.h>

RCSwitch mySwitch = RCSwitch();

int button1 = 4;
int button2 = 5;
int button3 = 6;
int button4 = 7;

int button_status1, button_status2, button_status3, button_status4;

void setup() {
Serial.begin(9600);
mySwitch.enableTransmit(3);
pinMode(button1, INPUT);
pinMode(button2, INPUT);
pinMode(button3, INPUT);
pinMode(button4, INPUT);
}

void loop() {
button_status1 = digitalRead(button1);
button_status2 = digitalRead(button2);
button_status3 = digitalRead(button3);
button_status4 = digitalRead(button4);

if (button_status1 == HIGH) {
mySwitch.send(“001011011010011100011000”);
} else if (button_status2 == HIGH) {
mySwitch.send(“001011011010011100010010”);
} else if (button_status3 == HIGH) { mySwitch.send(“001011011010011100010010”); } else if (button_status4 == HIGH) {
mySwitch.send(“001011011010011100010010”);
}
}

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By: mike https://randomnerdtutorials.com/decode-and-send-433-mhz-rf-signals-with-arduino/#comment-874180 Sat, 25 Nov 2023 09:44:56 +0000 http://randomnerdtutorials.com/?p=48715#comment-874180 This was the fastest I have ever gotten a project to work from a tutorial. Less than 10 minutes from plugging in some wires to having this working perfectly. Thank you!

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By: Ranjitha Prasanna https://randomnerdtutorials.com/decode-and-send-433-mhz-rf-signals-with-arduino/#comment-863045 Fri, 29 Sep 2023 14:28:05 +0000 http://randomnerdtutorials.com/?p=48715#comment-863045 HI Sara Santos,

I need some help from you it is not wrt to this project , I am building an RF transmitter using Arduino board and 433Mhz FSK RF transmitter. I am sending the binary or bytes which i need to transmit through RF board through Arduino using python. the data I am sending serially is in Manchester fromate. But when i check Tap the RX pin on the Arduino board I am not getting the same data what I am transmitting. ANy suggestion on this will help a lot .

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By: Nick https://randomnerdtutorials.com/decode-and-send-433-mhz-rf-signals-with-arduino/#comment-862326 Sun, 24 Sep 2023 21:13:02 +0000 http://randomnerdtutorials.com/?p=48715#comment-862326 Hello,
I am very interested in trying to find out the information from my 433 MHz remote, but I cannot get this to provide any output in the Serial Monitor. I am using ESP32, I have tried multiple different boards, changed the GPIO pin and the code, used several different receivers and still no luck. Can you please give ideas to get this to work, or does it not function correctly on ESP32?

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By: Peter https://randomnerdtutorials.com/decode-and-send-433-mhz-rf-signals-with-arduino/#comment-859932 Mon, 11 Sep 2023 20:30:05 +0000 http://randomnerdtutorials.com/?p=48715#comment-859932 In reply to Nick.

Hi Nick
Any luck on your side? I am stuck with the same issue here.

Thanx

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