If one has an IR reciever module similar to this and a IR flashlight like this, would the IR signal be able to be detected by the module? If not then, why?
From what I understand, these sensors don't have a particularly long range. They seem to be primarily intended for use with remotes. So, I'm not expecting to be able to do anything too fantastical here, but rather I'm simply interested in the proof of concept and/or any tinkering to make them interface better.
Answer
I would say: No, won't work
That's because the IR sensors like the one on the module is intended for remote control. Here's a link to a datasheet of a typical example.
Look at the table on the bottom of the first page, note how there are different types for different "carrier frequencies". This carrier frequency is the "modulation" which is used to detect the IR signal and suppress other IR sources like lights, the sun and the light from IR LEDs that are not modulated, like from an IR flashlight.
The light from the IR flashlight is not modulated but constant and will thus be ignored by such an IR sensor. It is designed that way so that they're more sensitive to the IR coming from a remote.
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