56kHz upgrade?

[planetjay]

Yesterday I received my USB-UIRT from PCAlchemy. After 24 hours with it I have discovered that 90% of my remotes are of the 56kHz and my USB-IRT ISN'T. Nearly every remote I have is either RCA or Dish Network.

Realizing that it would void the warranty, I would like to know. Can I just solder in a 56kHz IR detector? I happen to have one laying around from an old LIRC that I built that was scavenged from an RCA DirecTV receiver.

Is there more to it than that? Is the firmware the same? Do you care if I do this?

Also FYI, I chose your USB-IRT over the TIRA as a replacement to my IRA2 because of the emitter jack. I'm planning to control a Dish Network receiver with my PVR. We also needed experience with sending IR for BYOPVR.com.

[jrhees]

I assume you want to navigate your PC with those remotes...correct? (you don't need the sensor if you only need to learn the remotes for transmission).

You can put in a sensor, but it has to have the correct pinout. The pnout must be:
Pin 1 = Out
Pin 2 = GND,
Pin 3 = VCC

-Jon

[planetjay]

Actually I do want to use this little GE remote that I bought for $10 at Target to control the devices, like the DishNetwork receiver. I'll check the RCA DirecTV schematic I have and compare it to the board for pinouts since it's been a while since I played with it.

Also I did notice that it would learn the 56kHz commands even without an upgrade. You obviously put alot of thought into your design.

Thanks for your quick reply!

[skchai]

Ron,
I have the same problem with using dish network remote control to control my pc using girder with my USB-UIRT without 56khz. I am thinking of doing upgrade as well. After some searching in the web, it come down to this ir receiver from Vishay with those part number TSOP32156/34156/32256/34856, the only different btw them is Continue date rate of 800bit/sec or 4000bit/sec and burst length cycle/burst of "greater than 6" or "greater than 10". Is that any requirement of this 2 spec.

Thanks.

chai.

[jrhees]

skchai,

I would not recommend the Vishay receivers because a) The USB-UIRT's power supply filtering mechanism is not the same as Vishay's recommendation, and b) I tested the Vishays and was very disappointed at their ambient IR/fluorescent light rejection.

I can mail you a 56KHz receiver if you'd like -- send a request to support@usbuirt.com

-Jon

[skchai]

Jon,
That is so nice of you!! I am sending you an email.

Thanks.

Chai.