4 ms·
Haha awesome. I once was fooled by the sun, too. I noticed an unusual high power consumption of several KWh in my logs. They always appeared at the same time,
by nom 10y ago
Haha awesome. I once was fooled by the sun, too.
I noticed an unusual high power consumption of several KWh in my logs. They always appeared at the same time, almost up to the same minute.
So it turns out there is a very small time slot where the sun can reach through a window into the hallway. That was enough to offset the light sensor that I attached to the power meter inside the closet. The threshold was set too tight.
Think about the possible sources that influence this 'bug':
- the month
- the time of day
- the weather / state of the clouds
- open/close state of the bathroom door
- reflectivity of the hallway (objects, doors open/closed)
- prawn 10y agoWe had an office alarm system that would occasionally trigger incorrectly. It was movement and heat sensitive. The alarm would trigger on weekend afternoons. We were puzzled for weeks until it turned out to be a combination of the second hand on a clock and the sun shining through a window and warming it up.
- heywire 10y agoTowards the end of summer, one of my Raspberry-pi security cameras starts detecting "motion" in the form of the sunlight dancing on the wall when the fluffy clouds float by :)
- justinpombrio 10y agoAlert! Either break-in, or fluffy cloud!
- throwanem 10y agoAlert! What a lovely afternoon!