Easy and Simple Wireless

Projects General Guidance
1

Hi

I am not sure where to start so maybe you could help me :slight_smile:

I want to send very simple data between two modules wirelesly. So I would have one transmitter and one receiver.

Based on the data received, the receiver will then have things to do (led, relays, etc.). But how can I send data from one to another very easily.

I could send maybe codes (ex: A1, A2, B1) or just number (1,2,3,4) or binary (0001, 0010, 0011) or other format.

No big chain of data, Unidirectionnal, no big network, internet thing.

Any ideas?

Thanks in advance!!

2

You forgot what is probably the most vital criterion - the range.

3

Sorry, about 10ft maximum but it would be around 5ft in general.

4

These are very cheap and easy to use. 433Mhz trans/receivers

5

Awesome, I will try these!

Thanks so much!

Would you have a suggestion for something similar but with bigger range (for another project). About 1000ft.

6

For longer ranges, you would want to use Xbees (expensive), these HERE, can go about 100 meters.

There is also this that can go 1000m or +3000 feet

7

The NRF24L01 seems to be a very very good option! Lot of range and not expensive!

However, I guess I need 2 because they are transceivers?

Have you worked with these? Is it easy as plugging them into arduino on each side? Just like the 433?

Thanks!

8

I have not worked with them, only the 433 MHz T&R. But I do believe there is a library you can download if you search "NRF24L01 library".

9

NRF24L01 are easy to use, but from what I remember they are 3.3V devices, so they need level translation,

http://playground.arduino.cc/InterfacingWithHardware/Nrf24L01

http://fritzing.org/projects/nrf24l01-wireless-module-with-arduino

If you are just doing simple stuff sending in one direction, these 433mhz modules would be fine

http://www.ebay.com/itm/433Mhz-RF-transmitter-receiver-link-kit-for-Arduino-ARM-MC-U-remote-control-/201108260404?pt=LH_DefaultDomain_2&hash=item2ed2fc8634

Use virtual wire to send the data

https://www.pjrc.com/teensy/td_libs_VirtualWire.html

Actually, it looks like virtual wire has now been superseded or renamed to RadioHead (umm not sure there isn't a trademark issue with that :wink:

Anyway the 433mhz modules are easier to wire up and work on 5v, so no level shifting is required