Aaron's Homepage Forum
Aaron's Homepage Forum
Home | Profile | Register | Active Topics | Members | Search | FAQ
Username:
 Password:
Save Password
Forgot your Password?

 All Forums
 Electronics
 Light/LASER
 multi channel ir remote control		  New Topic  Reply to Topic
 Printer Friendly
Author Previous Topic Topic Next Topic  

surajsun22
Apprentece

India
16 Posts
Posted - Aug 07 2010 :  1:19:27 PM  Show Profile  Reply with Quote
Hi
i've made the ir remote control posted on this site here
http://www.aaroncake.net/CIRCUITS/irremote.asp

and it works great..

now i want to ask whether we can mod it to transmit/recieve more than one channel????

thnx..

audioguru
Nobel Prize Winner

Canada
4218 Posts
Posted - Aug 07 2010 :  4:51:06 PM  Show Profile  Reply with Quote
The oscillator and LM567 are set to one frequency. Make the oscillator produce different frequencies for different channels and make the LM567 receive the different frequencies.

Maybe you need separate oscillators and LM567 ICs.
Go to Top of Page

surajsun22
Apprentece

India
16 Posts
Posted - Aug 08 2010 :  02:45:44 AM  Show Profile  Reply with Quote
hmm....
where's the oscillator in the circuit.???

and does lm567 ic comes with different frequencies??
Go to Top of Page

audioguru
Nobel Prize Winner

Canada
4218 Posts
Posted - Aug 08 2010 :  08:36:07 AM  Show Profile  Reply with Quote
The oscillator is the IR transmitter. Its R and C are calculated to produce one frequency.
The R and C in the LM567 circuit are calculated to receive one frequency. Look at its datasheet.
Go to Top of Page

surajsun22
Apprentece

India
16 Posts
Posted - Aug 09 2010 :  07:56:28 AM  Show Profile  Reply with Quote
U mean to say i can change the values of R and C to change the frequencies???
srry but i'm a noob..
Go to Top of Page

audioguru
Nobel Prize Winner

Canada
4218 Posts
Posted - Aug 09 2010 :  10:53:39 AM  Show Profile  Reply with Quote
quote:
Originally posted by surajsun22

U mean to say i can change the values of R and C to change the frequencies???
srry but i'm a noob..

Yes.
But the frequency of the very simple oscillator changes all over the place and the bandwidth of the LM567 is fairly wide so you cannot use more than about 4 channels reliably.
Go to Top of Page

surajsun22
Apprentece

India
16 Posts
Posted - Aug 09 2010 :  11:07:56 AM  Show Profile  Reply with Quote
ok thanxx..
Go to Top of Page
  Previous Topic Topic Next Topic  
 New Topic  Reply to Topic
 Printer Friendly
Jump To:
Aaron's Homepage Forum © 1995-2020 AARONCAKE.NET Go To Top Of Page
This page was generated in 0.08 seconds. Snitz Forums 2000