bigclive
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Flickery 2-wire dusk sensor teardown
🕑 Added 2024-01-25 03:09:42 +0000 UTCA very basic dusk sensor supplied with a bulkhead light from a prominent UK trade supplier (Toolstation). It is so minimalist that it has slight stability issues at the transition from on to off.
Comments
Daniel
Instead of adding a light to indicate when that test unit is on Iād just replace the switch with one with built in light, I always put switches with built in 230v illumination in everything I build so I at least know if the thing has 230v when I suspect a bad PSU for example.
Mike Page
I did a skiplight design back in 2004 which used a photodiode for dusk sensing. And yes - it is totally necessary to include some hysteresis to avoid chatter. It also helps to mitigate feedback from the light being controlled to the light sensor. Otherwise congratulations you just built an optical oscillator!
John Lundgren ~ Acme Fixer
Sometimes I have to rant about a word I've heard more than once. A somnambulist is someone who is afflicted by somnambulism. A minimalist should be someone who is into minimalism. Is the object that is minimal trying to be anthropomorphized into a person? Other synonyms for minimal are simple and uncomplicated. Is it just that I'm not familiar with British colloquialisms and terminology? Thanks, Clive, for your excellent channel; I'm hoping that you take this as a technical improvement.
