Shelf with 5 levels with 50 leds each

Questions
1

Hi Wleds,

After playing around with small stripes I am planing a project with 250 leds.

In principle it’s a shelf with 5 levels with 50 products on each level. The idea is to have one led per product …so that each individual product has its own led-spot-light.

I’d like to use this single pcb pixel leds instead of led-stripes. 0,3W each

Wiring questions:
5 strings with 5 separate power supplies and 5 data lines
OR
5 strings with 5 separate power supplies and 1 data line
OR
1 string with one big power supply and one data line

Interface:
There will be a website on a tablet that sends api comms to the wled controller let the customer:
Search a product → product place should light up
Klick on a product attribute → all products with that attribute should light up
Klick on a product category → all products of that category should light up

Is this possible with wled? What issues could i run into?

Thanks for any comment/suggestions

2

I would keep the hardware simple. One string with one big power supply and one data line. You can then do individual LED control via json. You would then need to develop the app to feed wled API commands. You may be able to do it in a usermod, but either way, I think you would need to be able to code pretty well.

3

250*0,3W=75W → 75W ---- @5V → 15A (3A per string)

So i need approx 80W power supply.

Then I connect each string over a fuse to that power supply.

For the data line I put all strings in series to have only one data line? Correct?

@api: is it possible to turn on individual leds via api. E.g. turn on led number 23?

4

Right. In series.

See here for individual LED control via API: JSON API - WLED Project