# Multi Channel LED Light for Aquarium

#### Fabian S

Joined Jul 26, 2015
3
Hi there!

I need some help with a complete design for aquarium lighting.

I've been researching, and i know I can do this with Arduino, but I want to build a complete and specific solution for my project.

I want to do the following:
1. I will use a multi channel LED, 50 W, 4 channels, 750 - 1000 mA each.
2. I want to dim each channel separately and timer controlled. I want to dim with PWM, since I learned it's the best for the LED and the color temperature.
3. A temperature controlled fan, higher the temperature in heatsink, higher the fan.
4. A LCD to view the time and time setting.
5. Buttoms to enter the time data and dimmer adjust.
How can I do this? Which IC do You recomend? A microcontroller is a must?

#### mcgyvr

Joined Oct 15, 2009
5,394
Are you asking about how to make it from scratch and not use an arduino?
If so..
At a minimum you need any micro of your choosing like a AVR/PIC with enough PWM outputs... plus a real time clock chip like the DS1307
plus all the other support components, resistors,crystal,capacitors, etc..
Then an LCD of your choosing.. character/tft,etc...

Then just pick the proper LED drivers with a PWM input.. I might recommend meanwell LDD drivers (5V PWM) for multi-channel LED solutions or the meanwell LPF series (10V PWM) depending on the specs of this LED.

Sounds like you want to make these
http://coralux.net/

Note you can find 5 channel LDD driver boards too specifically for driving multi-channel LEDs. The LDD series will also require a regular power supply vs the LPF or similar which include everything in one package.

#### Fabian S

Joined Jul 26, 2015
3

Yes, You got the idea, I want to build form scratch. Coralux is a nice example of I want to do, but with the power supply and the LED all-in-one.

#### Fabian S

Joined Jul 26, 2015
3
Thanks again mcgyvr.

Yes, I plan to do my own PCB, that's why I don't want to use LDDs. If I use LM3414, I have to use one per each channel right?

Where can I find more information about the power supply, microcontroller, and how to put it all together? Any suggest?

Greetings!!