Comments on: How-to: USB remote control receiver

By: nOOb

nOOb — Mon, 09 May 2011 04:50:55 +0000

someone has remove the rc5 (manchester code)in this project?
how to?
any example or hex file

thankyou

By: mitron

mitron — Mon, 09 May 2011 00:05:48 +0000

“We chose to specifically decode RC5 (and RC5x) because it’s a widely used protocol, and the only type of remote we have to work with. Most of the decoding is done in the interrupt handler:

The first signal change triggers an interrupt that starts a 889us (one-half bit period) timer.
On each timer interrupt, one-half of a Manchester coded bit is sampled.
Every other interrupt the measurements are compared, and the bit value is calculated to be 0, 1, or an error. Errors reset the decoding routing.
At the end of each transmission the address and command bytes are decoded, and sent to the host with 4 buffer bytes(0). We discard the toggle bit because it would confuse the PC software into thinking every other press was a unique code. We append the second start bit to the command bit for RC5x compliance; this just adds 0×40 to non RC5x remote codes.

A more general version can be made by removing the Manchester coding step (3), and sending 48 sample bits (all 6 bytes) to the computer.”

someone has done this?
remove the manchester decoding function and set as irman to decode any remote control?
thx

By: bala

bala — Thu, 20 Jan 2011 10:45:11 +0000

i need driver for pic 18f4550 plz

By: crizr

crizr — Tue, 04 Jan 2011 19:49:37 +0000

For the firmware, use the USB IR Toy one from Dangerous Prototypes:

http://dangerousprototypes.com/category/infrared-toy/

http://code.google.com/p/dangerous-prototypes-open-hardware/downloads/detail?name=USBIRToy.firmware.v09.zip

By: DANIEL

DANIEL — Tue, 04 Jan 2011 16:09:20 +0000

LINK TO DOWNLOAD THE PROJECT IS BROKEN, PLEASE POST AGAIN. THANK YOU

By: st2000

st2000 — Mon, 22 Nov 2010 21:13:57 +0000

@Francirius
Agreed, please re-post the project’s files. However, in the mean time, Francirius, google for the project’s zip file: “USBIRr.v1a.zip”. I think you will find it here and there on the web. I suggest getting it from multiple sources. Once you’ve hit a match, consider what you have more likely to be the real thing. However, as with everything found on the web, you should take care it is clean.

By: Francirius

Francirius — Mon, 22 Nov 2010 18:48:35 +0000

The code is missing! can you re-post it?

By: st2000

st2000 — Mon, 15 Nov 2010 05:35:40 +0000

@Jeff:
Go to Amazon and use “usb to irda”. You will find a bunch of products ranging from in the $10s to several times that. Not sure why the spread.

I would suggest not to build one: 1) Where you can find loads of IRASK parts, it is difficult to find IRDA parts. 2) Bluetooth appears to be replacing IRDA. 3) As with Bluetooth, IRDA has several protocols that require hardware and complex software to implement.

By: Jeff

Jeff — Mon, 15 Nov 2010 01:51:29 +0000

Thanks st2000 for the advise.
I have a laptop with no IrDA conn. I intend to build a serial IrDA to do printing thro’ another host PC with IrDA conn. Can you advice me on a suitable circuit for this project?
Thanks

By: st2000

st2000 — Fri, 12 Nov 2010 14:27:30 +0000

Hi…

Does anyone know where the Eagle ZIP file is for this project? The download from the Mahalo page comes up empty.

I want to add some stuff and am just starting with Eagle. Thought it would be better to start with something that works (“smoke hasn’t been let out yet :)”).

-thanks

By: st2000

st2000 — Fri, 12 Nov 2010 14:21:47 +0000

@Jeff:
IRDA is different from the many media center remote control protocol. Most media remotes modulate a pulsing signal around 40KHz. The way they do it is where you get all the different formats (like RC5). IRDA is more like a bunch of really quick pulses. You will find IRDA in hand held devices like Printers, Palm Pilots and Phones. It’s quick enough to send lots of information like a picture or a document. To do that with a media remote would take forever – if possible. Also, where you can use a remote across the room, you can only go 1 maybe 2 meters using IRDA. That commercial where two people exchange phone number from different train cars is a bunch of phoowie.

By: Jeff

Jeff — Mon, 08 Nov 2010 03:44:07 +0000

I’m searching for an IRDA device to operate my lazerjet printer (HP 6MP)with a built-in IR sensor. Is this suitable?

By: NmaN

NmaN — Wed, 27 Oct 2010 08:22:44 +0000

Hi guys,

Look at this project. It is a Usb HID multiprotocol ir multimedia controller. It can decode various protocols: RC5, NEC, SIRC (Sony 12bit). No driver installation or pc software is required. You can use it to control Winamp, Windows Media Player and Microsoft Powerpoint.

http://www.elektrotekno.com/about55331.html

By: argento

argento — Tue, 12 Oct 2010 03:45:19 +0000

@Siva:
humm okey thx i’m testing now

By: Siva

Siva — Sat, 09 Oct 2010 16:32:07 +0000

@argento
The latest updated firmware (USBIRToy.firmware.v08.zip) of USB infrared toy works with this circuit, they have uploaded specific HEX code for hackaday circuit. Download the frimware from this link
http://code.google.com/p/dangerous-prototypes-open-hardware/downloads/list