| T O P I C R E V I E W |
| surajsun22 |
Posted - Aug 07 2010 : 1:19:27 PM
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.. |
| 6 L A T E S T R E P L I E S (Newest First) |
| surajsun22 |
Posted - Aug 09 2010 : 11:07:56 AM
ok thanxx..
|
| audioguru |
Posted - Aug 09 2010 : 10:53:39 AM
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. |
| surajsun22 |
Posted - Aug 09 2010 : 07:56:28 AM
U mean to say i can change the values of R and C to change the frequencies???
srry but i'm a noob.. |
| audioguru |
Posted - Aug 08 2010 : 08:36:07 AM
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. |
| surajsun22 |
Posted - Aug 08 2010 : 02:45:44 AM
hmm....
where's the oscillator in the circuit.???
and does lm567 ic comes with different frequencies??
|
| audioguru |
Posted - Aug 07 2010 : 4:51:06 PM
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. |
