Arduino 433MHz RF Receiver & Transmitter Tutorial: Decoding Pilot Codes & Setup Guide

Question

Hello, some time ago I bought a transmitter, a 433Mhz receiver and followed the guide:

Here's what it looks like for me:

Sketch that I uploaded to arduino:

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No response after pressing the button on the remote control, serial port empty, can someone help me solve the problem?

ghost2000 · Answer

And is the series working properly? Insert yourself sending some text after the reset. Is there any transmission at the 433MHz receiver output?

mateus2002 · Answer

I added to the code:

Serial.println("test");
delay(50);

and the port is communicating correctly.

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How can I check if there is any transmission at the receiver's output?
Will this method work?

The diode does not flash when I press the buttons on the remote controls.

ghost2000 · Answer

Preferably an oscilloscope. Diode current limiting resistor missing. If you're lucky, the receiver is still alive. Diode? It was necessary to check both. Much depends on the design of the receiver output. The solution with a diode and a resistor for basic tests is enough (the problem may be exceeding the permissible current). It is not known whether the receiver and the diode survived. It's hard to comment. Added after 1 [minutes]: PS There is no such thing as connection photography in electronics. Even Adam Słodowy explained that. As a matter of fact, you cannot see where the anode and the diode cathode are. Draw a wiring diagram. It looks like the LED is connected in series between the receiver output (if it is an output) and the uC input. If so, it won't light up. Count yourself what current can flow there and what is required for the diode to light up.

mateus2002 · Answer

Ok, partly solved, wanting to take any step, I decided to create a connection between the transmitter and the receiver. Surprisingly, it worked perfectly, thanks to which it was possible to eliminate failures of the receiving module, but unfortunately it still cannot read the codes from the remote;

The library used for the tests: VirtualWire
Example: Example Program

Example Program - Transmit

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Example Program - Receive

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Scheme of the previous connection and used with the RC Switch library that ghost2000 asked me for, downloaded from Link :

Anyone have an idea how to read codes from the remote control? Are both remotes just not working with this module?

ghost2000 · Answer

This is not a diagram and I meant the diagram of switching on a light emitting diode. Probably a standard mismatch. Preview what you have on the receiver output with an oscilloscope or analyzer. You will know what standard it broadcasts. From the VirtualWire library documentation you can find out if this standard is supported. If not, you will know the library for what standard to look for.

mateus2002 · Answer

By the way, I also wanted to ask because it has a couple of these modules.

I noticed that they differ from each other, I wrote to the seller asking why and he replied that this is the next version, but why does this one not read the remote? Someone encountered different versions of this module? Is this a customer divestment?

The photo at the auction was like this:

And I got this:

ghost2000 · Answer

The problem may be a mod (the remote has a different channel, a different module) or a bad library / remote (different transmission standards). Show what you have at the output of the module when the remote control transmits.

endi1940 · Answer

I also have versions without drawn elements and I have a problem with running the modules, are they working properly for you? Do they work different from the previous version?

Arduino 433MHz RF Receiver & Transmitter Tutorial: Decoding Pilot Codes & Setup Guide

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