receiver

nina · Joined: 20 Apr 2007 Posts: 111

hi everybody...

I would like help from you

if I buy RF (transmitter and receiver) modules below

http://produto.mercadolivre.com.br/MLB-153452404-transmissor-receptor-rf-433-mhz-controle-remoto-completo-_JM

in this case should I use a microcontroller to recognize wich button is pressed?
How to know what protocol that transmitter is using for each button when pressed?

thank you in advanced

muganga

SherpaDoug · Joined: 07 Sep 2003 Posts: 1640 Location: Cape Cod Mass USA

I would use a scope or logic analyzer to look at the receiver output when you push the buttons. With only 3 buttons there is not much to figure out.
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nina · Joined: 20 Apr 2007 Posts: 111

SherpaDoug

thank you for your help.

Is there another way to do this instead of use a logic analyzer? because I dont have one

tks again

nina

SherpaDoug · Joined: 07 Sep 2003 Posts: 1640 Location: Cape Cod Mass USA

If you do much work with microprocessors you will need a scope or logic analyzer soon. Check out the Intronix Logicport http://www.pctestinstruments.com/ It is really good for the money.
Other places make them even cheaper, but I can't vouch for the quality.

Or you can get used equipment. Ebay has a HP 1630A listed for $32. I paid 10X that much for mine about 20 years ago. It's big and the fan is loud, but it keeps on running.

Without such gear you have to count on the maker's documentation or help from other users.
_________________
The search for better is endless. Instead simply find very good and get the job done.