2KM Long Range RF link kits w/ encoder and decoder

[arhi]

I'm too having issues in making this work. The transmitter seems to be transmitting when a "button" is pressed. I powered it from a 9V battery.

Problem is the receiver that don't receive anything. The "demo project" show receiver module being powered from 9V too but the RX3400 on board works on 5v only (it is not 9V tolerant) and I don't see any regulation on board (not that I can tell for sure with this small smd's) and I see that Vdd is connected to PD pin directly so I'm reluctant to connect the RX module to 9V. Connecting it to 5V does not show anything on any of the output pins VT nor D(0:3).

I tried to take the RX and TX modules further apart (5m is the max to stay in same room) - no go.

anyone have any ideas?

[Albert.Miao]

Please test and use them in 5V 500mA Power.
We are sorry for the confused spec.
all the best
Albert

[hargus]

Hi Mr. Albert whether the source code you posted above does not use the header (. h) or the like to initialize itself RF

thank you

Hargus

[rbleich]

Hi there,

I have several questions :

The product information states "Working band: 433.92MHz (customize service available)". I contacted the support here and they said, they can't do that. Can I change this by myself? In need two links to connect two arduinos and they shouldn't interfere due to usage of the same frequencies.
Or are those 4 data lines for 4 channels and I can just use pins 1,2 for the one link and 3-4 for the other? It wouldn't be nice because of less data-rate but it would be an option.

And lastly and importantly for me: Is there a lib I can use for communication? I found the nice arduino source code exammple, but I want to transmit more then number 1 to 16 and I am just a beginner in this. So I hope I can just take another lib and this does the magic for me .

Best regards,

R

[rbleich]

hi there,

I just want to ask how you increase the data rate.
When I decrease the delay times (for data and off) so that the data rate should increase, it's only working for me until 200ms. When it's smaller like 150ms it's not receiving anything anymore. I used the sample code from the first forum page here.

I just want to figure out how the transmitter and receiver work, because I want to send something from the "off" state as fast as possible to keep the delay short.

Thank you for any hint!

R

[sest]

Hi,
what are your experiences with these modules? Do they really achieve 2 km?
I am currently using RFM69HW modules, but 2 km are not possible.
What is different with these modules? Just output power?
And what is this "super anti-jamming ability"?

Greetings,
Florian

[calebkuester]

The picture is slightly inaccurate. The Arduino's GND pin is unused.

[adamcrismon]

Hi all. So I am extremely naive when it comes to electronics, especially IC stuff. With that being said (and the laughter about to begin) do you have to control these with some sort of outside component (Arduino, etc) or can these be controlled by a simple analog signal?
I am trying to make a very simple switching system that turns on and off a light, well a relay to a light. I am looking to control the transmitter with a 5.0v signal, and then use the receiver output signal to cycle a relay (transistor maybe?)
If anyone knows whether this stupid question is possible or not, I'd greatly appreciate it, I'm about to start pulling my hair out over here!

[edst]

I know this is an old thread but I just used this TX/RX pair in a non-los install so I thought an update appropriate. I needed a wireless sensor 600' from my home and other 433mhz radios could not handle the terrain. The receiver is mounted on a 6' pole but the transmitter is about 5' below grade. Said differently I would need to raise the Tx about 5' to achieve los with between the two components, not including fir trees and shrubs. Even without los the system is working very well. Remember these radios send only 4bits (of user data) each packet so this is not a high speed link but excellent for a low bandwidth sensor network.

[colin.gagnaire]

Hi !

I bought this kit and tried the demo setup, with 4 buttons on the Tx, and 5 LEDs on the Rx.

As shown on photos, I used 9V batteries. And nothing works...

Here I see that 9V is too much for the Rx ? So did I kill mine ?

What are the real power requirements for both Rx and Tx please ?

Thanks and sorry if my english is bad, I'm french...