 |
| Author |
Message |
|
|
 Posted: Jun 05, 2012 - 03:23 PM |
|
Joined: Jul 29, 2009
Posts: 2
|
|
Hello,
I would like some help on creating a 433Mhz transmitter based on AVR.
My problem is that I have installed in my home some modules that control relays (to open my garage gate, to control some lights etc.), getting commands from regular key-ring style four button 433Mhz transmitters.
I want to create my own transmitter that will have 8 programmable buttons to replace the ones I currently use.
Does anybody have documentation that explains the way these modules work? The three receivers I have bought are atmega based so I guess there should be information somewhere…
I have searched in Google and I can’t find any useful information to implement a unit that will be able to use the “standard” communication “protocol” these type of transmitters use.
I hope my description is not too vague…
Thank you in advance.
N. |
|
|
| |
|
|
|
|
|
|
Posted: Jun 05, 2012 - 08:48 PM |
|
Joined: Apr 15, 2009
Posts: 4864
Location: San Jose, CA
|
|
"433 MHz" is a very common term for all kinds of protocol and frequencies, so unless you know what modules are used by OEM you won't have much luck without heavy reverse engineering.
If you want to design entire system from scratch, then there are plenty of options. |
_________________
The opinions and views expressed by me on this forum are my own and do not represent my employer or anyone else that I’m affiliated with.
|
| |
|
|
|
|
|
|
Posted: Jun 06, 2012 - 02:55 PM |
|
Joined: Jul 29, 2009
Posts: 2
|
|
alexru, thank you for your answer.
I did a little more research and I noticed that there are several different remote controls and different protocols that are implemented with different ICs like:
2260
2262
FP527
HT12D
HT12E
PT2240
S026-1
S026-2
S026-3
S026-4
SMC918
There are in the market programmable remotes that are PIC based (like mine) that are compatible with all the above.
Is there any library for AVR that can "simulate" the above "protocols"?
Since my receivers are Atmega based, I guess there is somewhere there something that have been implemented...
Thank you |
|
|
| |
|
|
|
|
|
|
Posted: Jun 06, 2012 - 05:09 PM |
|
Joined: Apr 15, 2009
Posts: 4864
Location: San Jose, CA
|
|
| I don't know if such libraries exist, but those protocols are simple enough, you can just create such library. |
_________________
The opinions and views expressed by me on this forum are my own and do not represent my employer or anyone else that I’m affiliated with.
|
| |
|
|
|
|
|
|
|
FAQ
Search
Register
Log in to check your private messages
Log in
Maximize
RSS
