Multichannel RF Remote control

Hi.
For a new project I need to control some actuators wirelessly by RF remote control.
We need a handy and small two-button remote control which can be connected to an Arduino or other microcontroller.

I have already managed to find such systems and remote controls with two buttons, but the problem is their channel functionality as they only work on a single band.
As I need to have 3 systems running at the same place without interfering, I need to find a remote control solution where we can pair the transmitter and receiver, fx by setting a DIP switch for the channel.

Does anyone knows as good supplier for this?
Any usefull links or references etc.?

Best regards
Thomas Jespersen

What is the problem with the same band? Couldn't you just use a few start and ID bits in your messaging to filter out the different remote controls to receiver pairs?

cl10greg said:

What is the problem with the same band? Couldn't you just use a few start and ID bits in your messaging to filter out the different remote controls to receiver pairs?

Click to expand...

I agree - pardon me with the bands then.
The problem is that I need to get a transmitter that supports these bits to be set by a DIP switch or similar.

Regards Thomas

Ah, gotcha. So you are looking at 3 receivers with unique id's and a single 2 button transmitter that can switch between the 3 with a dip switch or multislider? So what you want to do is whenever a button demand is read by the controller you would check the state of the selection switch and from there encode your transmitter ID part with the assigned receiver ID. Does that make sense?

cl10greg said:

Ah, gotcha. So you are looking at 3 receivers with unique id's and a single 2 button transmitter that can switch between the 3 with a dip switch or multislider? So what you want to do is whenever a button demand is read by the controller you would check the state of the selection switch and from there encode your transmitter ID part with the assigned receiver ID. Does that make sense?

Click to expand...

Well, yeah exactly.
Either that OR 3 individual transmitters as well will also work - as long as 1 transmitter is ONLY connected/paired with one receiver.

So that is what I would do. Just make sure when you program your receivers and transmitters that you are setting unique identifiers. I would also incorporate a checksum for your messaging because of the possible interference with the same band within the area.

This link may give you some ideas.
**broken link removed**
Page 60 - 65 show how to use the Holtek Xtr/Rcvr combinations.
You can use dip switches to set up the address coding.
Cheers