how can we send data by infrared diodes?

[segmex]

how can we send data by infrared diodes?
why 38kHZ Freq. used to send data ???

i want to send 20 data code via infrared 3meters .
any help will wellcomed.
any schematices
any avr bascom code
thanks in advance

 

[FvM]

Search forum for "RC5 AND remote".

IR is sent generally using 35 to 40 kHz carrier with simple on/off pulse modulation. Usual 3-pin detector ICs have an internal demodulator and signal presence/absence of the carrier on output. RC5 is the popular coding scheme used by nearly all remote controls.

 

[Khabree]

Following file includes many document (in pdf) related to circuits, IR protocols, IR motion detector and lots more. ENJOY

 

[segmex]

thanks i pressed "helped me "

any other codes will be wellcomed .
thenks in advance .

 

[Khabree]

Is this enough or need more?. Also visit following sites:

SITE1
SITE2

 

[Medtronic]

Hi all
i think i must add another site for IR infomation Look At
WWW.MedTronic.Piczo.com Regards MedTronic

 

[DE2IS]

thanks a lot guys!

 

[mongoose]

Hi,

Where do you buy the infrared diodes?

Ben Erasmus

 

[Khabree]

Ofcourse from the electronics venders like Digikeys, farnell, newark etc etc.

 

[UNIMAP90]

Dear
very useful sides and very basic and good presentation
u can see here
astro.temple.edu/~silage
www.arrl.org
thanks

 

[segmex]

thanks for the files but i need details .. and i thinks ur files are mostly related to PC . not for electronic stuff .

anyway it will helped me ! thanks