Played with LED strip and noticed some diodes glow when we touch them with fingers. The strip is not connected to anything. On one hand, I understand that the electric energy comes from somewhere around. On the other hand, I don't understand what exactly is happening there. Can we leverage this effect somehow? :)
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@caujka afaik it's from the energy in the air such as cell towers, wifi, etc.. where your hand bridging the connection is enough to make the LED to glow a bit.
There are solutions designed for this kind of workflow as well such as
https://www.theverge.com/2019/1/15/18183456/wiliot-bluetooth-chip-paper-thin-battery-free-low-cost
@kreyren if the behavior was reliable... :)
@caujka To confirm this hypothesis you could try to go somewhere where there isn't any cell phone, bluetooth, wifi, etc.. signal and it shouldn't glow anymore