tsop1738

[shubham Trivedi]

hello, i want to interface TSOP1738 sensor to 8051 microcontroller. now the problem is that, as this sensor product active low output while 38 khz pulse is received to this sensor. that means we can only controller signal device through this sensor. is this possible to controller more number device through this sensor by providing different frequency pulse to this tsop1738 ?

[Ashutosh Bhatt]

its not like that dear.
if its simply detecting low pulse then whats the need of micro controller dude????????????????
you can generate different codes or frequency using transmitter – modulate it on 38KHz carrier
it will be demodulated by TSOP and given to controller.
the controller will perform different tasks as per different codes

[shubham Trivedi]

that means we can send different codes using transmiter and this will recognized by tsop sensor . correct

[Ashutosh Bhatt]

to recognize code you have to develop program in assembly or C language for micro controller

TSOP can only de modulate 38 KHz carrier

[shubham Trivedi]

thank you very much for your support

[Ashutosh Bhatt]

u can use encoder-decoder ICs like HT12A-HT12D. or u can use any standard TV (or AC/DVD) remote and decode its code using micro controller program

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