Electronics > Beginners
24 hour sunrise/sunset dimmer for mains power light?
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james_s:
https://www.amazon.com/Current-USA-Single-Timer-Aquarium/dp/B00FDV1AFA

*edit*
Oops, I think that's a low voltage version, let me do some more looking and see if I can find a line voltage dimmer type.


*edit*
How about this? I'm not a huge fan of fancy smartphone connected widgets but it does appear it will do exactly what you want.

http://shop.avi-on.com/ge-plug-in-smart-dimmer/
tekdan000:

--- Quote from: james_s on June 04, 2018, 06:33:53 pm ---https://www.amazon.com/Current-USA-Single-Timer-Aquarium/dp/B00FDV1AFA

--- End quote ---
Right but it's low voltage. 12-24vdc

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james_s:
This looks more like what I had in mind.

https://www.plumladen.com/en/electronics-and-technology/automatic-dimmer-time-switch.html

There's a US plug version available in the dropdown.
SL4P:
A question for OP,
Are you sensing the daylight state by looking at the sky, or from the light falling on the aquarium?
(or a combination)
This will affect several things, and be affected by clouds, angle if the sun etc.
tekdan000:
Typically I follow a prelogrammed time curve. On the tc420 controller, the software allows the user to program the % power at each 30 minute interval for a 24 hour day.
5:00 - 1%
5:30 - 3%
6:00 - 10%
And so on and so forth. And it gradually increases and decreases so there aren't any visible step ups and downs.

Sent from my VS990 using Tapatalk

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