Infra-Red remote controller

H

Horace

Guest
Dear All,

I would like to build a simple remote controller (only ON /OFF).
Would you kindly advise the transmiter and receiver circuit? Thank
you very much.
 
"Horace" <hkhoracec@yahoo.com.hk> wrote in message
news:c3165a96.0503080106.14560468@posting.google.com...
Dear All,

I would like to build a simple remote controller (only ON /OFF).
Would you kindly advise the transmiter and receiver circuit? Thank
you very much.
Click to expand...
Look at app.notes from all the uC vendors (Texas, Atmel, Microchip etc)....

/A
 
Horace wrote:
Dear All,

I would like to build a simple remote controller (only ON /OFF).
Would you kindly advise the transmiter and receiver circuit? Thank
you very much.
Click to expand...
Check out TSAL-6200 for the transmitter, and TSOP-4838 38khz IR receiver
from Vishay <http://members.cox.net/berniekm/Hot_Parts.html>

You will need to modulate the IR LED at 38khz, the receiver unit puts
out a digital output when this carrier is detected.

--
Luhan Monat (luhanis 'at' yahoo 'dot' com)
"The future is not what it used to be..."
http://members.cox.net/berniekm
 
On 8 Mar 2005 01:06:35 -0800, hkhoracec@yahoo.com.hk (Horace)
wrote:

Dear All,

I would like to build a simple remote controller (only ON /OFF).
Would you kindly advise the transmiter and receiver circuit? Thank
you very much.
Click to expand...

http://kitsrus.com/pdf/k58.pdf
 
I've been doing some IR transcoder stuff using a Motorola (Ok, its
Freescale) 68HC908JK3. Even running with max clock of 32 MHz (8MHz bus)
I can't do the 38kHz pulses without additional hardware (4 bit counter
and a 22V10) though I have this suspicion that it I were a better
programmer, it could work. Can the Atmel or PIC do the pulses directly
in the processor or would added hardware be needed? Using a commercial
IR receive module, the reception and re-transmission is rock solid. BTW
this 'glues' together the Samsung DLP monitor and ATSC set top box.
GG
 
"Glenn Gundlach" <stratus46@yahoo.com> wrote in message
news:1110345310.565943.198460@f14g2000cwb.googlegroups.com...
I've been doing some IR transcoder stuff using a Motorola (Ok, its
Freescale) 68HC908JK3. Even running with max clock of 32 MHz (8MHz bus)
I can't do the 38kHz pulses without additional hardware (4 bit counter
and a 22V10) though I have this suspicion that it I were a better
programmer, it could work. Can the Atmel or PIC do the pulses directly
in the processor or would added hardware be needed?
Click to expand...
I haven't started my design yet... ;-)
But you should definitely do the modulation (38kHz) in a counter (PWM). I'm
sure the Freescale has such (as all the other does ;-). Then you should have
no need for anything near the clock frequencies you've stated. =)

Cheers,
Anders

Using a commercial
IR receive module, the reception and re-transmission is rock solid. BTW
this 'glues' together the Samsung DLP monitor and ATSC set top box.
GG
Click to expand...
 
Glenn Gundlach wrote:
I've been doing some IR transcoder stuff using a Motorola (Ok, its
Freescale) 68HC908JK3. Even running with max clock of 32 MHz (8MHz bus)
I can't do the 38kHz pulses without additional hardware (4 bit counter
and a 22V10) though I have this suspicion that it I were a better
programmer, it could work. Can the Atmel or PIC do the pulses directly
in the processor or would added hardware be needed? Using a commercial
IR receive module, the reception and re-transmission is rock solid. BTW
this 'glues' together the Samsung DLP monitor and ATSC set top box.
GG
Click to expand...
Most of the time, you can just make up the 38khz pulses in software
using a PIC. See the 38khz function of...

http://members.cox.net/berniekm/super.html

This is no problem at all even when running 4Mhz clock on the PIC.

--
Luhan Monat (luhanis 'at' yahoo 'dot' com)
"The future is not what it used to be..."
http://members.cox.net/berniekm
 
On Wed, 09 Mar 2005 08:33:42 -0800, Luhan Monat wrote:

Glenn Gundlach wrote:
I've been doing some IR transcoder stuff using a Motorola (Ok, its
Freescale) 68HC908JK3. Even running with max clock of 32 MHz (8MHz bus)
I can't do the 38kHz pulses without additional hardware (4 bit counter
and a 22V10) though I have this suspicion that it I were a better
programmer, it could work. Can the Atmel or PIC do the pulses directly
in the processor or would added hardware be needed? Using a commercial
IR receive module, the reception and re-transmission is rock solid. BTW
this 'glues' together the Samsung DLP monitor and ATSC set top box.
GG


Most of the time, you can just make up the 38khz pulses in software
using a PIC. See the 38khz function of...
Click to expand...
He already _has_ a 68HC908. What the hell does he need with a PIC?
I love the Motorola timer system (at least on the HC05/08/11 chips).

Doing a square wave, or even a pulse train, is almost trivial.

Cheers!
Rich
 
On Wed, 09 Mar 2005 21:49:31 GMT, the renowned Rich Grise
<richgrise@example.net> wrote:

On Wed, 09 Mar 2005 08:33:42 -0800, Luhan Monat wrote:

Glenn Gundlach wrote:
I've been doing some IR transcoder stuff using a Motorola (Ok, its
Freescale) 68HC908JK3. Even running with max clock of 32 MHz (8MHz bus)
I can't do the 38kHz pulses without additional hardware (4 bit counter
and a 22V10) though I have this suspicion that it I were a better
programmer, it could work. Can the Atmel or PIC do the pulses directly
in the processor or would added hardware be needed? Using a commercial
IR receive module, the reception and re-transmission is rock solid. BTW
this 'glues' together the Samsung DLP monitor and ATSC set top box.
GG


Most of the time, you can just make up the 38khz pulses in software
using a PIC. See the 38khz function of...


He already _has_ a 68HC908. What the hell does he need with a PIC?
I love the Motorola timer system (at least on the HC05/08/11 chips).

Doing a square wave, or even a pulse train, is almost trivial.

Cheers!
Rich
Click to expand...
The peripherals and interrupt systems on Freescale nee Moto parts are
sooo not primitive.



Best regards,
Spehro Pefhany
--
"it's the network..." "The Journey is the reward"
speff@interlog.com Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog Info for designers: http://www.speff.com
 
Rich Grise wrote:

On Wed, 09 Mar 2005 08:33:42 -0800, Luhan Monat wrote:


Glenn Gundlach wrote:

I've been doing some IR transcoder stuff using a Motorola (Ok, its
Freescale) 68HC908JK3. Even running with max clock of 32 MHz (8MHz bus)
I can't do the 38kHz pulses without additional hardware (4 bit counter
and a 22V10) though I have this suspicion that it I were a better
programmer, it could work. Can the Atmel or PIC do the pulses directly
in the processor or would added hardware be needed? Using a commercial
IR receive module, the reception and re-transmission is rock solid. BTW
this 'glues' together the Samsung DLP monitor and ATSC set top box.
GG


Most of the time, you can just make up the 38khz pulses in software
using a PIC. See the 38khz function of...



He already _has_ a 68HC908. What the hell does he need with a PIC?
I love the Motorola timer system (at least on the HC05/08/11 chips).

Doing a square wave, or even a pulse train, is almost trivial.

Cheers!
Rich
Click to expand...
He was asking if he needed extra hardware, probably not, if a PIC can do
it in software, so can about any other micro.

--
Luhan Monat (luhanis 'at' yahoo 'dot' com)
"The future is not what it used to be..."
http://members.cox.net/berniekm
 
"Spehro Pefhany" <speffSNIP@interlogDOTyou.knowwhat> wrote in message
On Wed, 09 Mar 2005 21:49:31 GMT, the renowned Rich Grise wrote:

Most of the time, you can just make up the 38khz pulses in software
using a PIC. See the 38khz function of...
He already _has_ a 68HC908. What the hell does he need with a PIC?
I love the Motorola timer system (at least on the HC05/08/11 chips).
Doing a square wave, or even a pulse train, is almost trivial.
The peripherals and interrupt systems on Freescale nee Moto parts are
sooo not primitive.
Click to expand...
In any case I agree 100% with Rich: Do it in a timer!

/A
 
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