Commenti a: World’s cheapest remote control replicator: just 1$ !

Di: jumpjack

jumpjack — Fri, 07 Aug 2009 20:45:37 +0000

MP£ wouldn’t work anyway, as it is a lossy compressione method which cuts just the needed frequency!
you should figure out if any WAV player is available for PSP, as WAV is the only uncompressed audio format, as far as I know; any compressd format wouldn’t do the trick.
THese FAQ appear to suggest that PSP does suport WAV format:
http://psp-download-center.com/faq.php

You could try this player:
http://forums.qj.net/psp-development-forum/103679-release-wav-player-psp.html

I think also lower frequency than 96000 Hz should work (try more typical 44100 Hz for example).

Please let me know if you do succeed in using PSP as a remote!
And, in case it works, some pictures would be cool!

Di: iwan

iwan — Fri, 07 Aug 2009 19:14:33 +0000

i’ve try this, and its working fine.
i tried few more condition, with one or two LED and not used the ground cable, its still can working fine.

the question is how to export WAV audio file for playing in my PSP.
the AUDIO format only working in sample bit rate 96000Hz, thats can’t be save as MP3.
WAV with 96000hz bitrate can played on windows media player, but can’t recognize on my PSP

sory my english not good

Di: Some New Projects in the Pipeline « Its The Rules

Some New Projects in the Pipeline « Its The Rules — Fri, 08 May 2009 14:31:31 +0000

[...] read a really cool (read geeky) article here where this dude made a universal remote control for $1 from a set of headphones and 3 IR [...]

Di: Ben Hoskins

Ben Hoskins — Thu, 16 Apr 2009 19:47:26 +0000

Hey,
Nope no spare remotes…
If anything, I keep on losing remotes, which is why a computer based remote is a good idea (I hopefully won’t lose my PC any time soon!)

I’ll give it a try with the ebay bought LED’s (if anything I’ll only lose £1)

Cheers!

p.s. the instructions have been very useful: i read the ‘How-To Turn your iPod in to a Universal Infrared Remote Control’ on engadget, then was looking to buy the Griffin IR device, which looks like isn’t manufactured any more.
This article has made it possible!

Di: jumpjack

jumpjack — Thu, 16 Apr 2009 19:30:09 +0000

I have no I idea, I bought my leds in a store, just asking for “IR LEDs”.
Don’t you have an old remote no more working/used to get the LED from?

Di: Ben Hoskins

Ben Hoskins — Thu, 16 Apr 2009 18:47:29 +0000

Hi, I’ve a really dumb question, but I’m more software than hardware…

I’ve looked on ebay for “IR LED” to gve this a blast, and I’ve got various specs like below:
Size: 5mm
Forward Voltage (V) : 1.5~1.6
Forward Current (mA): 60mA Continuous, 120mA peak for 10% Pulse Width
wavelength (nm):850
View Angle: 15-30 degree.

Does any of this, like the wavelength, or forward current, matter?
Will this mean that the range of the built remote will be affected?

fyi, my ‘big idea’ is to write a universal remote program to run on my kohjinsha UMPC, where you can associate buttons with sound files, and opensource it so I can:
1) Replace the 5 remotes I have
2) Add support into the mediacentre i’ve written

Cheers!

Di: jumpjack

jumpjack — Mon, 28 Jul 2008 06:43:39 +0000

S5vi, thanks for your feedback.
Point 1) is a known issue, that’s way I updated my RAW2LIRC program in such a way it can “flip” the signal if required. Anyway, you can invert the sampling led to avoid this.
Point 2) is quite strange; I have a VIA AC’97 …

About patents: I knew using IR to play sounds was patented, not that recording IR through audio was too; anyway, anybody can use any patented technology as long as he does not sell it. That’s why patents are freely available online:
http://www.freepatentsonline.com/6931231.html

I should have added to credits, indeed…
I will, together with your link.

Di: s5vi

s5vi — Mon, 28 Jul 2008 06:23:17 +0000

I tried it and finally works correctly.
Some remarks:
1. I must invert recorded signal.
2. Transmitter cannot work without a simple amplifier.
These issues due to my soundcard (Via on my mobo)
Recording with Ir led is US patented:
http://www.patentstorm.us/patents/6701091/description.html

Di: jumpjack

jumpjack — Mon, 14 Jul 2008 18:00:29 +0000

Sure you can use the WAV files on your IPOD: my idea actually started from a similar project… to turn IPOD into remote!
But please tell me if yout Ipod accepts these files, or if they must be in a different format.
(number of channels, sample rate, bits per sample, bytes per sample).

Di: Menu Inicio

Menu Inicio — Sun, 13 Jul 2008 02:28:44 +0000

I’ve tried this and it worked great.
I have one question:
Can I save this as a WAV file or something so I can use an iPod for example to reproduce de signal?

PS:Sorry for my english