From: Bengt M. <bu...@be...> - 2017-10-20 19:00:31
|
On 10/20/17 19:53, VDR User wrote: ... > In my case, the HP usb ir receiver doesn't do a good enough job > filtering out interference from my plasma tv. Put about 4 layers of > masking tape behind the red plastic cover helped but still didn't fix > the problem completely. So, my hp box just sits in a drawer untouched > now. This is a matter of the quality of the demodulating receiver used. I looked into mine, and it appears to be using a VS1838, which is a cheapie far-east product, sold for 10 cents or less. It is likely that a high quality TSOP-xxx38, preferably with AGC-4 (see https://www.vishay.com/docs/82491/tsop382.pdf) would perform better in a noisy environment. (Changing the receiver might be a better alternative than masking tape...) >> IMHO, it is time to retire irrecord. You can use IrScrutinizer instead, >> either reading from /dev/lirc or by using mode2. > > Isn't IrScrutinizer a graphical app only? Can you create remote > configs from command-line only like you can with irrecord? If not then > I wouldn't consider it a replacement. I know a lot of people who don't > have a desktop environment (or a keyboard/mouse attached for that > matter) to run gui apps. For those users it's not reasonable to > recommend they install one just for something like creating a remote > config. The error in this argument is that it is not necessary to capture/learn the IR signals on the target system; you do that on your favorite desktop system. Just as you may cross compile the Lirc programs. Having said that, suggestions for improvements are always welcome. > I don't know if this is an option for you but a homebrew serial ir has > been by far the most reliable & successful receiver for all my systems > farther than about 8ft. away from the boxes they're connected to. The arguments for and against should be well known. (The "range" of a good demodulating receiver has been given as 45m (135ft), FWIW...). > I > also tried the GIR/arduino setup as well, which IIRC worked but also > suffered from plasma interference. Try with receivers optimized for noisy environments, as per above, like TSOP38438 or TSOP34438. Noisy environments is a problem that has been tackled by professionals, like Vishay. Let's take advantage of this. Greetz, Bengt |