2006-09-19, 09:45 PM
Anyone experimented with changing out the visible LED in the PVR150 blaster for an IR one? Any other hacks?
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Increasing Range of Hauppauge Blaster?
Increasing Range of Hauppauge Blaster?
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2006-09-20, 11:56 AM
When I had trouble earlier (with wrong codeset) I fitted an IR LED from an old remote and it worked considerably better than the thing fitted as standard.
2006-09-20, 03:17 PM
Did you just swap out the diode or did you need to put a series resistor in too?
2006-09-20, 03:30 PM
(This post was last modified: 2006-09-20, 04:00 PM by Ted the Penguin.)
you should not need to put a resistor in series unless the led is wierd and has a built in resistor. if you have a multimeter or access to an electronics lab you can figure it out yourself :p . (ok so I am an Electrical and Computer Engineering major)
have you found an LED which will fit into the hauppauge casing? I got better results when I just removed the casing from the LED and used it bare. but that was temporary until I could get serial channel changing working
2006-09-20, 03:51 PM
Ted the Penguin Wrote:you should not need to put a resistor in series unless the led is wierd and has a built in resistor. Well that's what I was worried about. I figured I could look at the board and trace back and see if there is a resistor but I was hoping someone had already looked. A post in another thread indicated that he added a 220 ohm resistor since he wasn't sure about any current limit either. Ted the Penguin Wrote:access to an electronics lab you can figure it out yourself Shoot - no access to a lab - oops found my key, now I do :-)
2006-09-20, 04:03 PM
pastro Wrote:Anyone experimented with changing out the visible LED in the PVR150 blaster for an IR one? Any other hacks? I spliced in about 4ft of speaker wire to route/conceal the cable better.
Fatman_do
[SIZE="1"] HTPC: AMD XP+2500, 512MB DDR (400) ~ Capture Device: Hauppage PVR-150 Storage: 30GB OS & Recording, 160GB Post Processing & Archive Video Output: HD 32" TV via eVGA Geforce 6200le 256MB AGP DVI-HDMI cable out Audio Output: Turtle Beach Riviera S/PDIF Optic Output (Digital pass thru only) to Home Theater Receiver[/SIZE] [SIZE="2"] Moderator | Tutorials | Community Skin | CommunitySkin-SVN[/SIZE]
2006-09-20, 04:09 PM
do you have a multimeter or a friend who has a multimeter? if not you can buy one, they are pretty useful.
looks like radio shack has them for $15-20. just measure the resistance of your LED and the resistance of the hauppauge LED.
2006-09-20, 05:42 PM
As far as I could work out the current limiting resistor is on-board. It's just a plain LED in the sticky bobble thing - I guess they hope there is enough cross-over from the red LED to the IR sensor that it all works.
2006-09-20, 05:42 PM
Ted the Penguin Wrote:do you have a multimeter or a friend who has a multimeter? if not you can buy one, they are pretty useful. I do have a meter but normally when you try to measure a diode especially an LED, since the forward voltage is so much higher, resistance doesn't tell you much. Here's a couple examples using a visible LED. using a Fluke 189- (led forward biased) 1.9 volts on diode scale. 12 meg on resistance. 200 ohm series r added. 2.0ish on diode scale 12 meg on resistance. Yes there is a difference but with an unknown diode the V/I isn't known to start. Using a fluke 8050 led forward biased. open circuit on diode scale and resistance scale. Anyway, when I get home I'll look at it. My guess is there is a resistor on the board.
2006-09-20, 06:31 PM
yeah you will have to forgive me for forgetting the right way to do stuff like this, it has been a while since I have actually had to use a multimeter. most of my classes are now in either cmos design or high level math/probability.
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