Modded Ceiling Light (Feedback & Improvement)

Hardware
1

Hello there :hugs:

I’ve just finished planning modifying this ceiling light that originally came with CCT capability including also a small remote control.

The Idea was to take some power from the existing power supply for the LED & ESP strips which wasn’t suitable because 180V Are way over specs.
I decided to use a secondary power supply.

I came up with this:
There’s a 12V transformer with an 8A output. It’s protected by a fuse and then connected to a DC/DC converter that changes 12V to 5V with 6A fuse on the output.
From there, it connects to the ESP8266

The ESP8266 controls the relays and also sends signals to the LEDs.
Everything else in the plan should be pretty self-explanatory.

IMG_20231003_072329
IMG_20231003_0723291711×1080 171 KB

The shown parts in the picture are partially right ones, some may not

Overview:

Red Line:
This is where the power for the RGB part comes from.

Green Line:
The Data signal for the WS2811B LED Strip.

Yellow:
These lines control the relays and carry control signals.

Blue:
This is part of the CCT LED Light circuitry.

Parts list
  • WS2812B 60LED/M IP30
  • ESP8266 (D1 Mini)
  • converter Module 12VDC to 5VDC (10A max.)
  • Power supply 12V 8A
  • 2x Relay 5V (SPDT)
  • Fuse (Fast 8A),(Fast 6A)

If you have any thoughts or suggestions to improve this design or you need some more informations, please share/write them! :point_left:

1 Like
2

Actually based on these informations I cannot tell anything… :roll_eyes:

3

You may want to include a level shifter to handle the various outputs.
Even the relays will be easier to source with a guaranteed 5V output driving them.
Make sure you don’t get an I2C type - too slow for the WS281x devices

Hopefully the 12V->5V converter you showed is just a stolen image and not what you actually purchased.
Those “Black w/red writing” models are well known to be the worst choice you can make. Pick something else…

Other than that it looks reasonable over all, should be fun :grinning:

4

Hi, thank you for this idea!

I have some level shifter laying around so, shouldn’t be a problem. :smile:

no worries, I have a another buck converter which is capable within 9A of current:

IMG_20231003_165501
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5

That looks a little more robust.

One thing to watch out for with those dual pot style converters is that one is usually for current limiting, which is not needed for addressable LEDs (crank the current to max and set the voltage).

6

Alright, thanks but I already knew :slight_smile:

I tested this converter before with 7A contentiously for few hours and it just needed some more cooling.
Its output was also stable so I figured this is suitable for my purpose. :smile:

7

These are still questionable looking