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Old 11-12-2010, 08:05 PM
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Unhappy simple IR transmitter receiver

I already have the ir transmitter circuit and tsop receiver circuit as shown.

Can anybody send me the link of simple IR transmitter&receiver. thanks beforehand (<SNIP>)

Last edited by bertus; 11-12-2010 at 08:29 PM. Reason: removed email to protect you from spambots
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Old 11-12-2010, 08:28 PM
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bertus bertus is online now
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You just hijacked an existing thread:

Now you have a thread of your own with all the attention for it.

You don't have to know everything, if you know where to find it.
When you do ask questions, you may look stupid.
When you do NOT ask questions, you will STAY stupid.

It would be nice to have the Timezone ( GMT +/- x ) in the location field in the profile.
(User CP -> Edit Your Details)
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Old 11-13-2010, 12:15 AM
Audioguru Audioguru is offline
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Your 555 sends continuous 38kHz. A TSOP IR receiver and most others reduce their gain when they receive continuous 38kHz because they assume it is interference from a compact fluorescent light bulb. The TSOP datasheet explains this and shows that the 38kHz must be modulated in "bursts" usually by data or by an another oscillator for the gain to remain very high.

Your IR LEDS are directly in parallel that is very bad unless they are matched.
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Old 11-15-2010, 12:19 PM
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Tahmid Tahmid is offline
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With this setup, you won't be able to do much. Research on using 555/4017 with HT12D and HT12E. There was one project on EFY that had a complete 4-channel circuit with this. Maybe you could google to see if you find it. I'll see if I can find it for uploading.
In the meantime, do your research on this. If you can use microcontroller, which I don't think you can, there are complete projects with source code available with RC5 protocol starting with simple 8-pin 12F629 and ATTiny to much larger.

Hope this helps.
পৃথিবীর সর্বোচ্চ দালানও প্রথম ইট বসানো থেকেই তৈরি হয়েছে।
The tallest building in the world starts from the first brick.
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