Wireless communication with arduino

Projects General Guidance
1

Greetings to all :slight_smile:

I have a question concerning wireless communication with arduino with this simple and cheap product : Neuftech® 433mhz transmetteur RF.

This device is used for a one way transmission-reception between two arduino boards. It costs only around 3-5 euros.

Problem statement : suppose we have three potentiometers, and two push buttons. These components are put on the transmitting arduino. The objective is to send the information coming from these components to the receiving arduino. The potentiometers are sending three analog values and the push buttons are sending discrete values. The question is : can we do it with one 433MHz RF module? or we need more?

I hope my question isn't very stupid since I am quite new to arduino :confused:

Thanks

2

Read the values of your potentiometers and state of buttons into variables. Send these values via the link, then use them as required.

Search the site for more information on using the wireless link. It is a common question.

Weedpharma

3

You may be able to use Radiohead.b

4

Hi,

Google 433mhz rf transmitter and receiver arduino

You will be surprised what you will find.

Tom..... :slight_smile:
On ebay you can get them for next to nothing with free postage.

5

The issue with those cheap 433 Mhz radios is that they are uni directional, so you need to decide how reliable
do you want the radio link to be , as theres no way you can determine whether the receiver actually received what you want to send.
There are many factors which affect the reliability of the transmission, range being one , and the other being that the frequency is shared with anyone else who also has a similar radio.
Whats the range required and whats the impact if some of the transmissions arnt received.
If you need better reliability, then a bi directional radio like a NRF2401 is a better choice as you then get an acknowledgement back that the transmission has been received.

6

The NRF radios do not have much range unless you get the +LNA or +PA version, which draw more current. You could also get a radio TX and RX like what is used for RC. On the TX side, just the actual radio module, and on the RX side, the PPM output. You would have to somehow encode data in the PPM.