Chinese made LED diy

Request new hardware or ideas for the controller
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Joined: Fri Jul 20, 2012 9:42 am
PostPosted: Sat Sep 07, 2013 9:28 am
Kraven check out the link i posted above from wamas. It looks like its analog dimming and you can connect to it pretty easily. Keep us posted!

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Joined: Sun Mar 17, 2013 8:21 am
PostPosted: Sat Sep 07, 2013 4:36 pm
lnevo wrote:Kraven check out the link i posted above from wamas. It looks like its analog dimming and you can connect to it pretty easily. Keep us posted!

Yeah, I had found that one and if all else fails that should work. There is another dimming connection on the driver board that they did not use and I think is for PWM dimming.
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PostPosted: Sat Sep 07, 2013 5:06 pm
Keep me posted :)

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Joined: Fri Dec 28, 2012 2:26 pm
PostPosted: Wed Sep 18, 2013 8:34 pm
can we get a update? im glad others are trying this i just havent had time with getting married next week and everything

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PostPosted: Wed Sep 18, 2013 8:36 pm
Cool :)
Congratz!!!
Roberto.
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PostPosted: Wed Sep 18, 2013 8:40 pm
rimai wrote:Cool :)
Congratz!!!


+1 congrats! Wish i had an answer though...

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Joined: Wed Sep 25, 2013 8:35 am
PostPosted: Wed Sep 25, 2013 9:35 am
I just got 3 of the Evergrow Nova A8s for my 300DD. They were awesome to work with and did custom layout of different chips. Price and shipping were incredible. PM if you want a contact.

I bought the versions with the rheostat instead of their controller as I wanted to hook it up to the RA. Also, their controller not only adds $ it steps in 30 min increments only.

When I got mine, I immediately took it apart ;) (Disclaimer -- doing the below most likely voids your warranty and there is 120V inside the box when plugged in. You may permanently destroy your lights and there is potential for electrocution -- nothing like 120V & salt water! Please proceed at your own risk. It works for me, your mileage may vary).

Here is the rheostat board

Image

and the other side:
Image

There are 4 pins:
1: On/Off -- reads 0V when the rheostats is off and 10.77V when on
2: +12V -- reads 11.78V, comes from the LED drivers
3: PWM (0-10V)
4: GND

You can see (or not!) in image that there are two connectors. That is because each dimmer board controllers 2 LED drivers. In my lights there are 4 LED drivers in total: 2 white and 2 blue (or whatever mix of LEDs you have). The pins are connected so both drivers receive the same signals.

I shorted pins 1&2 to provide the LED drivers with the signal that the light is on.
I connected pins 3&4 directly to the RA Dimming Module and voila! Let there be RA-controlled dimmable lights!

The only problem I have is that some of the lights appear to dim differently than others. Specifically, if I look at the light from the long end, the left bank of lights (controlled by one white and one blue) is brighter than the right bank (the other white and blue). I don't understand this as both are getting the exact same signals. My only thought is that the LED drivers have a small POT inside them and maybe that adjusts the lower end of the dimmers. Open to any and all suggestions!
Last edited by scurvyrat on Wed Sep 25, 2013 4:16 pm, edited 1 time in total.
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PostPosted: Wed Sep 25, 2013 9:40 am
Would love to know which contacts as there are many suppliers :) Also you did it on the Nova A8.. this is a 22" model?

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Joined: Wed Sep 25, 2013 8:35 am
PostPosted: Wed Sep 25, 2013 10:11 am
lnevo wrote:Would love to know which contacts as there are many suppliers :) Also you did it on the Nova A8.. this is a 22" model?


I'd PM you'd the contact if I had permission to PM! Maybe some magic can be worked there, Roberto?

The Nova A8 is the 22" x 11" x 2.8" light with 96 x 3W LEDs. So far I'm really impressed with the build quality and the amount of light (I don't own a PAR meter). I have a 300DD so the I need to cover 6' x 3' x 28" or so. If Marineland didn't have the #$#$#@ cross braces, my world would be perfect. As it stands I do get a bit of shadowing from them and going to 4 lights wouldn't help that much.

I did a custom layout and they turned it around in 72 hours and I had my custom lights from Shenzen in 7 days. Extremely well packed. Amazing.

When I get permissions to post images I'll post them up.

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Joined: Fri Mar 18, 2011 6:47 pm
PostPosted: Wed Sep 25, 2013 10:18 am
I fixed the image post :)
You only need one more post to be able to post links!!!
Roberto.
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