InfraRed ramblings

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  1. - 15th July 2025, 01:52 #1
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    Default InfraRed ramblings

    Using this 940nm LED set on Amazon: https://www.amazon.ca/dp/B01HGIQ8NG

    Can I have the transmitter LED on without any pulsing? (resistor values are temporary, did not do any calculations yet)

    Name: IR schematic.png Views: 35 Size: 15.2 KB

    This circuit was inspired by this tutorial: https://www.instructables.com/Intro-to-IR-Circuits/

    I just want to detect a hole in a disk; no communication.


    Examples on google often use 38kHz or 56kHz, but their receiver has 3 pins; VDD, VSS and DAT. That leads to me to believe there's more going on in that receiver.

    This guy has a really nice way to calculate the values:

    Last edited by Demon; - 15th July 2025 at 01:54.
    My Creality Ender 3 S1 Plus is a giant paperweight that can't even be used as a boat anchor, cause I'd be fined for polluting our waterways with electronic devices.

    Not as dumb as yesterday, but stupider than tomorrow!
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