433mhz rf receiver and rgb led remote

[russdx]

I have noticed the teensy has a library to work with rf 433mhz receiver and sender modules (seem to buy these as a pair)
http://www.ebay.co.uk/itm/433mhz-RF...681?pt=LH_DefaultDomain_3&hash=item23415a5619


You can also buy these really cheap RGB led rf kits which comes with a nice little rgb multi button remote and then the custom rf receiver with the built in led controller.
http://www.ebay.co.uk/itm/RF-Contro...-Light-/371021872799?var=&hash=item5662a07e9f


My question is will the rgb led remote talk to the rf 433 receiver (from the kit) are the protocols the same?
Does any one have any experience with these rf devices? Can they all talk to each other? Do they all speak the same language or is it down to who ever made the firmware / chipset?

I assume it will be like the IR stuff where you have the sony,nec,sanyo etc.. protocals.

 

[GremlinWrangler]

Unfortunately there are a near infinte range of 433mhz protocols.

You may be in luck and find they use one of the protocols supported by the RCswitch library https://code.google.com/p/rc-switch/

I have found a range of devices using that but it's a case of getting one and trying it out. The library is well built and robust. Be aware that it's interrupt process does hog the CPU due to the random noise produced by the receivers so things like software PWM or neopixels don't work reliably.

If that doesn't work then you have to get a scope and look at the wave forms and working from there see if anybody has found something like it before. The 433mhz hardware can support an amazing range of encoding schemes so while somebody has quite possibly built some code for the lights in question finding it will not be much fun.

If you are shopping for the very cheap hardware be aware you get what you pay for and ranges on the low end can be 1-2 meters. Properly engineered they should be good for 10s of meters and/or getting through at least one wall, but the ones you linked to won't.

If you want to roll your own version of the light see also the virtualWire library, which is nicer for moving data than the 'on/off' centric codes of RCswitch.

 

[russdx]

Yeah I was kind of hoping I could buy the cheap rf 433mhz receiver and one of these rgb led remotes and they would just work together hehe. I dont really need this for my project but it would be a nice add on so not going to put to much effort into getting it to work. But if I can get a receiver and remote talking nicely relativity easily it could be a nice feature

I have bought a few receivers and a few remotes and will have a play using pauls virtualWire lib for now

Thanks for your help.

 

[neep]

Sorry to be incredibly late to the party.

Unfortunately there are a near infinte range of 433mhz protocols.

You may be in luck and find they use one of the protocols supported by the RCswitch library https://code.google.com/p/rc-switch/

I have found a range of devices using that but it's a case of getting one and trying it out. The library is well built and robust. Be aware that it's interrupt process does hog the CPU due to the random noise produced by the receivers so things like software PWM or neopixels don't work reliably.

This is exactly the problem I ran into when trying to do RF433 remote control on my Teensy which was*driving a POV toy, and first I just tried polling the output often, but would find it was almost impossible to read the signal in time and still drive the POV in the same cycle. I also tried interrupts but it would often crash the Teensy. Perhaps just poor programming on my part, but in any case it didn't seem easy. And all I was doing was some simple commands, e.g. to switch programs. In my case I was actually using a cheap RF433 sender and receiver module that I hooked up to a teensy on either end, making use of the VirtualWire library.

If that doesn't work then you have to get a scope and look at the wave forms and working from there see if anybody has found something like it before. The 433mhz hardware can support an amazing range of encoding schemes so while somebody has quite possibly built some code for the lights in question finding it will not be much fun.

I tried that and gave up much too early, at the time:

https://forum.pjrc.com/threads/24465-driving-RF-from-Teensy-instead-of-RF-remote

If you are shopping for the very cheap hardware be aware you get what you pay for and ranges on the low end can be 1-2 meters. Properly engineered they should be good for 10s of meters and/or getting through at least one wall, but the ones you linked to won't.

I found that attaching wires to the transmitter and receiver at the right length can make for decent antenna's, doing a decent job at extending their range.

If you want to roll your own version of the light see also the virtualWire library, which is nicer for moving data than the 'on/off' centric codes of RCswitch.

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