Turn Your IPod Into A Universal Remote - Page 2 - Electronic Circuits Projects Diagrams Free

eax05 · 23rd October 2005, 05:21 PM

i made this project onces it is really nice

andrew12345678 · 31st October 2005, 04:55 AM

could someone please give me a circuit diagram for both the IR Recording Device and the transmitting device

thankyou

Mark J · 13th December 2005, 03:14 PM

Hi guys,
Just recently found this forum and been reading up loads as new to electronics etc, and stumbled across this thread and have a quick question about the IR on PDA's as I have a Dell Axim X5 and have the TV remote software but found that the range from the pda was pretty poor to say the least

Would it be easy to increase the power of the IR from the PDA to get a better range to control the TV etc?
Would it be a simple matter of replacing the IR transmitter in the PDA with a more pwoerfull one (ie from an old remote control) or would it be something a bit more involved like upping the power to the IR?

Thanks in advance

bloody-orc · 13th December 2005, 07:12 PM

you cant replace the IR transmitter in the PDA but you can make a multiplyer or an amp for it. just make a schematic that reads IR data and then sends out the same data 10 times more powerful. the easyest way to do it is with pic microprocessor (or other similar), but i think i can be done without any programmeble processor. just need some transistors and iverters and op amps and oc cource resistors and IR LED's. can't give you a schematic now sadly

joevennix · 3rd January 2006, 03:49 AM

Quote:

Originally Posted by Someone Electro

This should work whith any mp3 player.

What you do is conect an phototransistors to your PCs microcphone input and record an signall from an remote.Then you save it as an mp3 and the portable player will play back that signal in to an IR LED conected to the headphones plug.

Its an realy simple idea.But 44Khz (the sampeling rate) is a bit close to 38Khz (the freq. remotes work on).

Im thinking of building an PIC music player out of an old 30GB PC harddrive(I have one laying around).The loop that reads it mus not be more than 200 instructions long on an PIC18F. (If more the sampleing rate would become too slow for audio)

What? Although the method described to record the signals might work, the method described to play them back wouldn't. The voltage out of a regular headphone jack isn't high enough to power an IR LED, correct? The Griffin TotalRemote works by incorporating a capacitor, hence the bulgy design. When the IR signal is recorded, it is converted to a sound file so it can be played on an iPod/PDA. A short, high burst of sound waves is added to the beginning of the sound file, just powerful enough to charge up the capacitor until there is enough voltage for the IR recording to be released, powering the LED. Pretty cool, huh? Just thought I'd let you know.

6 divad · 5th May 2006, 06:22 PM

that is a really good idea i might try it

electroniks · 8th May 2006, 10:27 AM

Quote:

Originally Posted by Someone Electro

Its an realy simple idea.But 44Khz (the sampeling rate) is a bit close to 38Khz (the freq. remotes work on).

Is it good or bad that they are close?

Some audio recording softwares can actually record at 38khz. Would this be better ?

**Nigel Goodwin** · 8th May 2006, 10:55 AM

Quote:

Originally Posted by electroniks

Is it good or bad that they are close?

Some audio recording softwares can actually record at 38khz. Would this be better ?

No, worse.

electroniks · 8th May 2006, 01:04 PM

Quote:

Originally Posted by Nigel Goodwin

No, worse.

I cannot think of a reason why. Would you please care to elabourate a bit ?

**Nigel Goodwin** · 8th May 2006, 01:23 PM

Quote:

Originally Posted by electroniks

I cannot think of a reason why. Would you please care to elabourate a bit ?

Because you're sampling at specific time intervals, and the sampling is the same as the incoming carrier frequency, you might sample a LOW every time - you should sample a MINIMUM of 2.5 times the maximum frequency.

concrete_hed · 17th July 2006, 06:28 AM

Hey im new here, sounds like a cool idea. Just a quick question for ya. Dont some IR photodiodes only respond to certain wavelengths eg. 900nm? So what if the IR LED sends out a different wavelength to what the photo diode in an appliance can pick up? Does it matter too much if the wavelengths are different?

**Nigel Goodwin** · 17th July 2006, 08:12 AM

Quote:

Originally Posted by concrete_hed

Hey im new here, sounds like a cool idea. Just a quick question for ya. Dont some IR photodiodes only respond to certain wavelengths eg. 900nm? So what if the IR LED sends out a different wavelength to what the photo diode in an appliance can pick up? Does it matter too much if the wavelengths are different?

It makes hardly any difference, pretty well all IR remotes use similar wavelength diodes.

HiTech · 17th July 2006, 12:37 PM

Cool, I'm going to scarf my daughter's iPod and head to a few bars where they have multiple televisions and wreak havoc during the best part of a sports game!!

uzzors2k · 18th July 2006, 09:30 PM

Has anyone actually made their own Griffin IR module yet? I don't mean to be a noob asking for schematics, but I 've tried a few times without luck. The only solution I see is using an amplifier to actually drive the LEDs.

ecoy28 · 7th August 2006, 10:33 AM

would anyone please post a circuit for the IR transmitter and recorder...

might use my movu as replacement for the Ipod.

Thanks

13th December 2005, 03:14 PM	(permalink)
Mark J New Member	Hi guys, Just recently found this forum and been reading up loads as new to electronics etc, and stumbled across this thread and have a quick question about the IR on PDA's as I have a Dell Axim X5 and have the TV remote software but found that the range from the pda was pretty poor to say the least Would it be easy to increase the power of the IR from the PDA to get a better range to control the TV etc? Would it be a simple matter of replacing the IR transmitter in the PDA with a more pwoerfull one (ie from an old remote control) or would it be something a bit more involved like upping the power to the IR? Thanks in advance __________________ Cheers Mark J

13th December 2005, 07:12 PM	(permalink)
bloody-orc Experienced Member	you cant replace the IR transmitter in the PDA but you can make a multiplyer or an amp for it. just make a schematic that reads IR data and then sends out the same data 10 times more powerful. the easyest way to do it is with pic microprocessor (or other similar), but i think i can be done without any programmeble processor. just need some transistors and iverters and op amps and oc cource resistors and IR LED's. can't give you a schematic now sadly __________________ Need Help? Press F1 If that doesn\'t help you, ask me... I might know better.

5th May 2006, 06:22 PM	(permalink)
6 divad New Member	that is a really good idea i might try it Last edited by 6 divad; 5th May 2006 at 08:42 PM.

17th July 2006, 06:28 AM	(permalink)
concrete_hed New Member	Hey im new here, sounds like a cool idea. Just a quick question for ya. Dont some IR photodiodes only respond to certain wavelengths eg. 900nm? So what if the IR LED sends out a different wavelength to what the photo diode in an appliance can pick up? Does it matter too much if the wavelengths are different? Last edited by concrete_hed; 17th July 2006 at 07:16 AM.

17th July 2006, 12:37 PM	(permalink)
HiTech Experienced Member	Cool, I'm going to scarf my daughter's iPod and head to a few bars where they have multiple televisions and wreak havoc during the best part of a sports game!! __________________ Don't make me reach through this monitor to slap you a good one!

23rd October 2005, 05:21 PM	(permalink)
eax05 New Member	i made this project onces it is really nice

31st October 2005, 04:55 AM	(permalink)
andrew12345678 Experienced Member	could someone please give me a circuit diagram for both the IR Recording Device and the transmitting device thankyou

18th July 2006, 09:30 PM	(permalink)
uzzors2k New Member	Has anyone actually made their own Griffin IR module yet? I don't mean to be a noob asking for schematics, but I 've tried a few times without luck. The only solution I see is using an amplifier to actually drive the LEDs.

7th August 2006, 10:33 AM	(permalink)
ecoy28 New Member	IR circuit for transmitter and recorder would anyone please post a circuit for the IR transmitter and recorder... might use my movu as replacement for the Ipod. Thanks

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