Ok, for several months I have been using my Hauppauge WinTV HVR 2250 to watch TV (from Comcast) on my computer, with no STB, so I get channels 1-35ish, which is no problem, as 90% of what i watch falls in that range. Recently, Comcast "upgraded" their broadcast to all digital (or something like that), and now 95% of what I record doesn't come it. Ok, so I have a STB from Comcast laying around (a DC50X), so I run the cable through that, and it all seems to work fine, except WMC can't change channels (because of no IR blasters). I decided I wanted to make my own IR blasters, because I am not going to pay $10-$30 for a plug, some wire, and a LED (all of which cost, oh, about $.30).
Here is where I start to run into problems, I can't find any actual schematics online (for voltage or polarity). Eventually I find reference to 3.3V, and the tip of the plug being positive. I decided to go a tad overboard here, I built an in-line amp circuit, using a wallwort for power, anywho, I connected positive to the tip, and negative to both of the other rings (using a 2.5mm audio plug). When I plug it all in, and start configuring WMC for a STB, I get part way through, and it says "IR hardware not detected", dang!
Upon inspecting the manual for the card, it appears that the "IR" port also supports IR in. I am wondering, is one of the rings supposed to go to an IR detector, and the setup is analog, or is it using digital communication? Or, is there some hidden standard, that to detect it, it needs to be X ohms?
I know I could go out and buy a MCE remote with IR communication, but if I don't have to spend $30 or more, that would be awesome.
Any feedback or help would be awesome!
-Connor
Here is where I start to run into problems, I can't find any actual schematics online (for voltage or polarity). Eventually I find reference to 3.3V, and the tip of the plug being positive. I decided to go a tad overboard here, I built an in-line amp circuit, using a wallwort for power, anywho, I connected positive to the tip, and negative to both of the other rings (using a 2.5mm audio plug). When I plug it all in, and start configuring WMC for a STB, I get part way through, and it says "IR hardware not detected", dang!
Upon inspecting the manual for the card, it appears that the "IR" port also supports IR in. I am wondering, is one of the rings supposed to go to an IR detector, and the setup is analog, or is it using digital communication? Or, is there some hidden standard, that to detect it, it needs to be X ohms?
I know I could go out and buy a MCE remote with IR communication, but if I don't have to spend $30 or more, that would be awesome.
Any feedback or help would be awesome!
-Connor