user42808: I'm trying to find information about this 433MHz RF module: QIACHIP

Apparently it can be connected to an Arduino with the RadioHead library, but I don't have diagrams of how to connect them togheter in order to send/recieve data, becasue the module have 4 pins (Vcc, Gnd, Dat and En). I guess Dat pin should be connected to any Arduino pin, but as I only have one module I dont wanna risk it. I have no previous experience with RF modules :-(
I have found some Youtbe video, but the language of the video is in russian, and I don't know that langauge (I even ask the owner of the chanel for subtitles).
Please, if anyone have worker whit this module before, share:

How to connect the module with an arduino?
A simple example of how to send a simple word (let's say: "Hello") from the transmitter to the reciever


user4143: You're right not to just go ahead and wire things up. There's a couple of nuances that you need to take into account.
Transmitter

Ignore the EN pin - that does nothing on that module
The transmitter is 1 3.3V device. You need to power it from the 3.3V pin and use logic level (5V -> 3.3V) translation on the Data pin


simulate this circuit – Schematic created using CircuitLab
Receiver
The receiver is much simpler as it is a 5V device:

simulate this circuit
On the Arduino it shouldn't matter what IO pin you use, the Radiohead library should work fine with any of them.  These modules are pretty dumb - you raise DAT high on the TX and DO on the RX goes HIGH. Very simple.

42808: <p>I'm trying to find information about this 433MHz RF module: <a href="http://www.ozeki.hu/p_6034-information-about-433-mhz-modules.html" rel="nofollow noreferrer">QIACHIP</a></p>
<p><a href="https://i.stack.imgur.com/Uacb7.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Uacb7.jpg" alt="enter image description here" /></a></p>
<p>Apparently it can be connected to an Arduino with the <a href="http://www.airspayce.com/mikem/arduino/RadioHead/" rel="nofollow noreferrer">RadioHead</a> library, but I don't have diagrams of how to connect them togheter in order to send/recieve data, becasue the module have 4 pins (Vcc, Gnd, Dat and En). I guess Dat pin should be connected to any Arduino pin, but as I only have one module I dont wanna risk it. I have no previous experience with RF modules :-(</p>
<p>I have found some <a href="https://www.youtube.com/watch?v=BmfmnfHpapo" rel="nofollow noreferrer">Youtbe</a> video, but the language of the video is in russian, and I don't know that langauge (I even ask the owner of the chanel for subtitles).</p>
<p>Please, if anyone have worker whit this module before, share:</p>
<ul>
<li>How to connect the module with an arduino?</li>
<li>A simple example of how to send a simple word (let's say: &quot;Hello&quot;) from the transmitter to the reciever</li>
</ul>
 4143: <p>You're right not to just go ahead and wire things up. There's a couple of nuances that you need to take into account.</p>
<p><strong>Transmitter</strong></p>
<ul>
<li>Ignore the EN pin - that does nothing on that module</li>
<li>The transmitter is 1 3.3V device. You need to power it from the 3.3V pin and use logic level (5V -&gt; 3.3V) translation on the Data pin</li>
</ul>

<p><img src="https://i.stack.imgur.com/fYPRP.png" alt="schematic" /></p>

<p><sup><a href="/plugins/schematics?image=http%3a%2f%2fi.stack.imgur.com%2ffYPRP.png">simulate this circuit</a> &ndash; Schematic created using <a href="https://www.circuitlab.com/" rel="nofollow">CircuitLab</a></sup></p>
<p><strong>Receiver</strong></p>
<p>The receiver is much simpler as it is a 5V device:</p>

<p><img src="https://i.stack.imgur.com/Z8lzX.png" alt="schematic" /></p>

<p><sup><a href="/plugins/schematics?image=http%3a%2f%2fi.stack.imgur.com%2fZ8lzX.png">simulate this circuit</a></sup></p>
<p>On the Arduino it shouldn't matter what IO pin you use, the Radiohead library should work fine with any of them.  These modules are pretty dumb - you raise DAT high on the TX and DO on the RX goes HIGH. Very simple.</p>
