#6742
Hi.

I have bougth one APC220 Radio Communication Module, but have a question about it already. What should I do with the EN pin? I am going to connect it to a Arduino Pro 5V 16MHz.

Should I connect 5V to it? what is the pin for?
#6743
Hello crusher,

I think you need wiki link :

[url=http://www.dfrobot.com/wiki/index.php?title=APC220_Radio_Data_Module(SKU:TEL0005)]http://www.dfrobot.com/wiki/index.php?title=APC220_Radio_Data_Module(SKU:TEL0005)[/url]

hope it helps
#6744
Hi,

Thanks for the link. I have checked out that link, but I get confused. Should I connect the EN pin to 5V or 1,6V? And my arduino does not got any GPIO port, so what should I connect to the SET pin?

I have just connected the TX pin to RX, the RX to the TX, VCC to 5V and GND to GND. EN, SET and AUX is not connected.
#6745
Hello,

The pin EN, stands for enable. Think of it as a on/off switch. If you set it HIGH it will be on, low will be off. You can just not connected and it will be enabled by default.

Please take a look on the Note at the bottom of the page if you have issues with your operating system using the USB-Serial board.
#6746
Hi.

So if I let the EN pin disconnected, it will be enabled? And with HIGH you mean 5V? Sorry, i am a noob on this. Just got my first arduino and RF module.

The issue on the operatingsystem is on the computer that is not gonna be used. The laptop works just fine with it, so i just use that one.
#6747
Hello,

Exactly, the operating system issue is just in case you are using the module from the computer, if you are using it directly from Arduino you can ignore that. :)

If pin EN is disconnected it will be enabled. Check the wiki for the exact voltage, but HIGH should be 5v. The wiki says something bigger than 1.5.

In case you use Low powered arduino, which uses 3.3v, then high would be 3.3v.
#6748
Hello,

I fixed the os issue on the computer. One of the modules is on the arduino and the other on my pc.

Ok, so the EN pin works the same if I let it disconnected or connect 5V, and it does not make any difference? If so, I just connect 5V to it.

But, another question. On the wiki the SET pin is connected to GPIO, but my arduino has no port like this. So what should I connect that one to?
#6749
[quote="The Crusher"]
Ok, so the EN pin works the same if I let it disconnected or connect 5V, and it does not make any difference? If so, I just connect 5V to it.
[/quote]

Yes

[quote="The Crusher"]
But, another question. On the wiki the SET pin is connected to GPIO, but my arduino has no port like this. So what should I connect that one to?
[/quote]

That pin is used for setting some internal parameters.
You don't need to connect it to be able to use the module.
#6750
Ok. Thanks again.

And I guess that the TX pin goes to the RX pin on the arduino and the RX pin on the TX pin on the arduino? Or is it TX to TX and RX to RX?

Is it some wrong settings in the program? I add a screenshot of the settings it has now.