https://blog.jgc.org/2024/06/two-ways-to-use-led-as-light-sensor.html
I needed to log when a light switched on and off during the night as part of debugging an oddly behaving movement sensor. To do that I built a really simple light sensor logger using an Arduino Leonardo, a large LED and a resistor or three.
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Two Ways to Use an LED as a Light Sensor With Arduino
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(Score: 3, Interesting) by Barenflimski on Saturday June 29 2024, @06:52PM (1 child)
Fun Project. Thats cool.
(Score: 4, Touché) by looorg on Saturday June 29 2024, @08:32PM
I agree. That said I'm still wondering if this solved the initial problem of debugging the oddly behaving movement sensor or not.
(Score: 2, Interesting) by anubi on Sunday June 30 2024, @12:58AM (1 child)
Check for cats, skunks, raccoons, and possums. Occasionally a coyote or lost dog.
They trip mine off all the time. I've watched an go over and trip my neighbors setup after they've tripped mine.
"Prove all things; hold fast that which is good." [KJV: I Thessalonians 5:21]
(Score: 3, Informative) by anubi on Sunday June 30 2024, @01:04AM
Oh yes...it's getting hotter at night now, and as ambient approaches our body temperature, we get harder and harder for thermal sensors to sense us against a background of similar temperature.
It's AGC ( Automatic Gain Control ) might be compensating making it more susceptible to false positives.
"Prove all things; hold fast that which is good." [KJV: I Thessalonians 5:21]