Discussion in "Project Doubts" started by    Darshanparabbnb    Mar 26, 2018.
Mon Mar 26 2018, 07:40 AM
#1
hello sir,
i am doing project 'control pc using tv remote using 8051'.
i searched various shops for tsop1736 but this ir sensor is not available.....
so my question is can i use tsop1738 instead of tsop1736 ?......
if yes then tell me which kind of changes i have to do........and
if not then tell me an alternative for this ir sensor.....plz help me
Mon Mar 26 2018, 09:05 PM
#2
The tsop1736 works at 36 kHz
the tsop1736 works at 38 kHz.
Otherewise they are the same.

You will need to find a transmitter that
works at 38 kHz.
I don't know how common they are.
You will just have to try a few.

This is an old project.
Make sure PCcontrol.exe runs on your system.

PCcontrol.exe uses com1,com2 or com3.
If using a USB serial adapter you will need to re-name
the USB com port eg 'com20' in system settings.
Tue Mar 27 2018, 04:19 AM
#3
If i found an transmitter and connects tsop1738 ....then which kind of changes i have to do in program....?? And suggest me any other tsop which i can use for 36khz


[ Edited Tue Mar 27 2018, 04:22 AM ]
Wed Mar 28 2018, 01:33 AM
#4
This project is for a transmitter using the Philips RC5 format.
For any other type the code will need a large re-write.

The RC5 format does not specify the Infrared carrier frequency,
so modern versions my be 38KHz.
If you have a 38KHz, RC5 format remote,
the code should not need any changes.

I have to say I have a box of remotes and not one
works with any TV or DVD etc, other that the one it came with.
Don't try this project unless you are sure you have a Philips RC5 format
remote control.

These are possible modern alternatives to the TSOP1736
but check the pinout.
TSOP4136
TSOP2136

More specialised
TSOP4336
TSOP2336
TSOP4536
TSOP2536

Many PCs don't have a serial port, so you might need a
USB/serial adapter.
If you use a USB/serial adapter you don't need the
MAX232 chip in the diagram.




[ Edited Wed Mar 28 2018, 02:17 AM ]

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i have seen your replica of I2C programming using AT89C51 but i am unable to understand the "ack_bit" variable usage ...looks like it is always 1...can you elaborate how acknowledgment is working....
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Pins high is the normal state. You need a program to set them low
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