-Pradeep G
This project uses a 555 timer IC with an optical sensor to create a smoke detection alarm system. The optical sensor consists of an IR diode and a photodiode with a small gap in between. During normal condition the photodiode is receiving the IR signal from the IR diode. The presence of smoke interrupts the signal to the photodiode which in turn activates the 555 timer IC to generate alarm. The timer IC is configured as an astable multivibrator with a frequency in the audible range.
11 comments:
Is it working???
Interesting and important information. It is really beneficial for us. Thanks
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Wow, Fantastic Blog, it’s so helpful to me, and your blog is very good,
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Dropshipper
thanx dude its working nice circuit
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what is the price of the photo interrupter module ???
Very Nice Circuit.......
Electronics Circuits
what would be approx. cost of making this project ?
IT WORKS!!!
IT COSTED ME AROUND 50-60rs
Lcd Tv Repair
Very Nice Post.
Good information nowadays.
Thanks for sharing with us.
could you plz tell me how to collect information to write a project report on this topic,i am a 2nd yr student nd ve to submit a project report on it?
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