Timeline for Decode an infrared signal with an IR demodulator inside a microphone jack
Current License: CC BY-SA 3.0
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| Apr 28, 2014 at 16:00 | comment | added | supercat | It may be worth noting that some IR receiver assemblies are extremely sensitive to power-supply noise. What's drawn above as simply "+5" should probably--at minimum--have a bypass cap located very close to the receiver assembly. I vaguely recall those decoders as often having open-collector rather than totem-pole outputs, in which case some form of pull-up might be necessary. On the other hand, with some sound-card microphone inputs, eliminating the cap might eliminate the need for the pull-up [many microphone inputs include a weak current source to power electret mics]. | |
| Apr 28, 2014 at 15:57 | history | edited | Cornelius | CC BY-SA 3.0 |
added 201 characters in body
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| Apr 28, 2014 at 15:51 | history | answered | Cornelius | CC BY-SA 3.0 |