8 PORT CONTROLLER - using max485 and cat6 cable

Usermods
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Hey the hope you all doing well
Im working on a project wich envolves some 20m adressable fairly lights in wich i need to controll 8 of them sometimes with distances over 30meters.
For this project i was trying to get the ‘cleanest’ look possible wich means using less cable as possible From what i saw it is possible to run power & data thru cat6 cable if we opt for TTL comunnication.
I would like to be able to run 12V power and GND and then stepping down the voltage to 5v at the end in order to reduce the issues with voltage drop.

WHAT I NEED HELP WITH:
1 - Your input in whether this a good ’ concept’ or ways to improve it
2 - Circuit digram revision
3 - Someone to design the pcbs

IDEAS:
SLIM PCB AT THE RECEIVING END WITH:
12V > 5V STEP DOWN CONVERTER & MAX485 MODULE TO DECODE THE TTL SIGNAL
https://www.blinkylights.blog/2022/05/23/single-cat-6-power-and-data-for-ws2815-led-strips/

IMG_9770-1
IMG_9770-11008×756 416 KB

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In case of long runs better to use 12V power or even 24V. In this case voltage drop will be acceptable. Regarding circuit it’s a standard RS-485 protocol and a lot of boards available at low cost. Development of a new board will cost you much more than you think.

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Hi

There are ready made PCBs from Mr. Radig, they have the same size as the strip.

also in 12V available.
For the sender side I’ve been using standard RS485 PCBs from Amazon.

Kabel should be made for DMX or RS485
Works great.
When you don’t need white the ws2815 is a good choice, otherwise UCS2904.

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Addendum :
We had the power with separate cable 2 x 4mm² for each 3m of SK6812 144leds/m.
the ethernet cable is definitely a bit too thin for power.
sommercable has quite a variety of hybrid cables power and data.