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IR transmitter using microcontroller

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anakramalan

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from microcontroller to transmitter

Hi,
I am currently doing a project that is using IR.And I am at the transmitter part.
From what I read,there's a lot of protocol that can be used out there but we can also make our own protocol.So i decided to make my own.

One question that I would like to ask is how do you make the modulated carrier frequency to 38kHz using the microcontroller?

I am currently using atmega48.
 

rushi53

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transmitter using microcontroller

u can generate 38kHz freq either by using delay routines or by using timer interrupts.
if u are using RC5 protocol, then u need to embed the data bits into this 38kHz freq
 

bobcat1

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generate 38 khz 8051

HI

There is a fine application note at NXP site for using a microcontroller as IR transmitter & receiver For the LPC9xxx microcontroller (8051 best)

The code written in C language and it is a bit easy to convert to any other micro

All the best


Bobi
The microcontroller specialist
 

ALMIGHTY TECH

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Re: generate 38 khz 8051

HI

There is a fine application note at NXP site for using a microcontroller as IR transmitter & receiver For the LPC9xxx microcontroller (8051 best)

The code written in C language and it is a bit easy to convert to any other micro

All the best


Bobi
The microcontroller specialist
kindly provide the link...
 

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