Meanwell LDD driver: for those who want to dim to 0 using Arduino
- Thread starter pwreef
- Start date
oreo57
Well-known member
So a PEBKAC error.
:lol: Literally made me laugh out loud!
I'd almost forgotten about that old saying, had to resolve one of those today with a coworker! I'ts so hard to do in person when they can see your facial expression as you explain the "problem"..........
Ligershark
Member
Im still having problem cutting my power off when my pwm signal is set to zero. I also have my setting on my storm controller set to "fan" for channels I'm using (which essentially reduces the frequency or something of the signal/channel to be more compatible with fans)
Also, something completely different.
How does my scw effect the size of my power supply? Do I leave it the same as I would have when doing the math to my led strings or should I increase the voltage to accommodate the voltage the fans will be pulling?
Since I am using the scw05b-12, should I increase my power supply to accommodate the additional 12v?
Also, something completely different.
How does my scw effect the size of my power supply? Do I leave it the same as I would have when doing the math to my led strings or should I increase the voltage to accommodate the voltage the fans will be pulling?
Since I am using the scw05b-12, should I increase my power supply to accommodate the additional 12v?
jedimasterben
LED world domination!
The power supply will output xx volts no matter what you plug into it.
FYI, the SCW05B-12 has a maximum input voltage of 36v. The SCW05C-12 is probably what you wanted since it can have 72v input.
Fans will only use a watt or two each, so I wouldn't worry about adding that to the power supply calculations.
FYI, the SCW05B-12 has a maximum input voltage of 36v. The SCW05C-12 is probably what you wanted since it can have 72v input.
Fans will only use a watt or two each, so I wouldn't worry about adding that to the power supply calculations.
Ligershark
Member
my power supply is 24v the c is 36-72, but i understand now, so I don't have to worry about the voltage being used by the fans.
jedimasterben
LED world domination!
correct, because the power supply will always output 24v no matter what is connected to it (since it is constant voltage).
Krazie4Acans
New member
Was there ever an 8up with two SCW's? Or do you mean the 8up board and you are going to put two SCW's on it? I don't remember seeing an 8up with two SCW on it as well (basically 10 LDD layout). I could have missed it though. Krazie:jester:
_shorty_
New member
I believe O2 made a board with 8LDD-H + 2SCW (& 4 fan pin-outs)
Krazie4Acans
New member
I must have missed it then. The only one I remember was his 8up board that he replaced two of the LDD-H's with two SCW's on his SCW to LDD adapter board to give 12v and 5v out fans. I'll do some searching and see what I can find. Krazie:jester:
I don't think the 8up board was ever posted was it? Wasn't that the one that O2Surplus did as a project for a company?
God I need to learn how to use Eagle
I feel so lost as I understand the basics involved, but have had (a very quick) play with Eagle using someone else's files and had no idea! Wish I had the time to follow the online guides. I will eventually, but how soon, is a different matter
Tim
God I need to learn how to use Eagle
I feel so lost as I understand the basics involved, but have had (a very quick) play with Eagle using someone else's files and had no idea! Wish I had the time to follow the online guides. I will eventually, but how soon, is a different matter
Tim
I don't think the 8up board was ever posted was it? Wasn't that the one that O2Surplus did as a project for a company?
God I need to learn how to use Eagle
I feel so lost as I understand the basics involved, but have had (a very quick) play with Eagle using someone else's files and had no idea! Wish I had the time to follow the online guides. I will eventually, but how soon, is a different matter
Tim
You're right- I never posted the build files for the 8up/dual SCW board and a couple of others. As soon as I have some free time, I'll go though my collection of designs, tweak them a bit so they're pefect, and then post all of the build files to this thread. LOL This thread is so long now- that even I don't remember what designs I've put up, let alone where in this thread to find them. :headwally:
Time for a little group advice I will be using 3 8x20 heat sinks across the top of my 180 6x2x2. each heat sink has 4 50w leds on it.. here is where I need some help I have 2 36v 11Amp power supplies to run them with and 2 of the newest 8up boards from 02 with fan connections and the mean well SCW DC 12v converters and the 8up boards each have 8 drivers on them running at 1.4A and each bank of 4 can be powered separately so should I run all 3 sets of lights and cooling fans from 2 or should I get a 3rd PSU (36v 11Amp) I am kind of thinking I need a 3rd PSU
Ok- so you're driving a total of 12 50 watt leds spread across 3 heat sinks and you've got 2 8up boards with 12 1400ma drivers. Here's what I'd do- only install 6 drivers on each 8up pcb and power each PcB with 1 of the 36V supplies. That way you'll stay under the maximum wattage for each supply. The drivers will pull about 8.4 amps per board, well under the 11amp maximum. Probably even less, since the drivers trade some voltage for current. You'll have enough wattage capacity leftover to drive your cooling fans and a few more leds if you want.
