You can "Mix&Match" all you want. The important thing is to purchase a power supply with enough voltage and current headroom for the Led that you're driving. Since the specs listed for your led go up to 36 volts, I'd error on the side of caution and use a 48 volt supply. The 48v/8amp model would drive 3 of your led's quite comfortably.
Meanwell LDD driver: for those who want to dim to 0 using Arduino
- Thread starter pwreef
- Start date
You can "Mix&Match" all you want. The important thing is to purchase a power supply with enough voltage and current headroom for the Led that you're driving. Since the specs listed for your led go up to 36 volts, I'd error on the side of caution and use a 48 volt supply. The 48v/8amp model would drive 3 of your led's quite comfortably.
iced98lx
New member
So I've added the SE-350-48 to my order, am I following you if I said I could use this power supply to drive 3 of the 5LDD boards and therefore all 3 of my pendants I'm planning?
If so, excellent, makes my shopping list pretty easy, just need to get the board order started!
Skinnysloth
New member
OK- Here it is all finished up. I've attached the PCB (.brd) file along with the Schematic (.sch) and Parts list ( there's a link to Mouser for the screw headers) in one folder.
I also attached the gerber files needed for PCB production @ Itead Studio. Just follow their instructions to rename the files with your order number.
Is there an alternative to using the screw headers besides soldering the wires straight to the board? I can't seem to find anyone selling the screw headers in quantities less than 50.
iced98lx
New member
Mouser looks like they'll do it on the part he's got specc'd in the zip but the total comes around to $61.60 just for the terminal blocks for 3 boards, plus they're back ordered!
Wonder if there are other options there.
Mouser had those in stock last month IIRC, but they're now on back order. That sucks. Give me some time and I'll redesign the board to use some more commonly available 2 position "stackable" connectors. I'll post the revised file ASAP.
Whoops! So much for doing the math in my head. LOL each of your leds will be drawing 3150ma of current. So you'll only be able to drive 2 of your leds on the 8 amp model. You'd need at least a 10 amp model to drive 3. But here's where it gets interesting. The 8 amp model is rated for 350 watts, If you can lower the output voltage on the supply enough, the current capacity at that voltage should be above 8 amps to maintain the 350 watt rating. Using a VF of 36v for your leds as a worst case scenario, each led will be consuming 112 watts. 112 x 3 =336 watts total. That's less than the 350 watt rating of your supply. This is all conjecture of course, but you never know till you try. The power supply has built in over voltage/ over current protection, so the worst that could happen is that it just shuts down until you lower the load by removing 1 led.
iced98lx
New member
I grabbed eagle and was toying with replacing them with Molex style connectors, for instance, just trying to find a more affordable route.
Yea the plan was to do 1 pendant at a time (even though various parts will be here anyway) so I can always add a 2nd power supply and use it to light the fuge if need be
rrasco
Active member
Anything we can do to make them cheaper and easier to setup, is good. I know I am toying with the idea of RJ-45 connectors, I already have them on some other boards and they are only like $1 or $2. It will depend on what you are driving though, they can't handle too much current.
If you know of some PCB molex connectors, throw them up here.
If you know of some PCB molex connectors, throw them up here.
iced98lx
New member
I suppose for $27 you could go this route:
http://www.aliexpress.com/item/10pc...-Screw-Terminal-Block-2P-3P-4P/514149666.html
order 3x10P in each lot- save $30 and you've got enough to do 3 boards.
http://www.aliexpress.com/item/10pc...-Screw-Terminal-Block-2P-3P-4P/514149666.html
order 3x10P in each lot- save $30 and you've got enough to do 3 boards.
Ok- I reworked the connections to use 2 position screw terminals that can be purchased dirt cheap on FleaBay. You'll need 10 per board but they can be had for less than 25 cents each. Just look for 2 position screw terminals w/3.5mm spacing. Here' the PCB and the files needed for production at ITead are attached.
iced98lx
New member
Last edited by a moderator:
Skinnysloth
New member
Ok- I reworked the connections to use 2 position screw terminals that can be purchased dirt cheap on FleaBay. You'll need 10 per board but they can be had for less than 25 cents each. Just look for 2 position screw terminals w/3.5mm spacing. Here' the PCB and the files needed for production at ITead are attached.
Thanks, let's hope they haven't started making my order and use these gerber files instead of the original. I ordered from ITead yesterday.
one clownfish
Member
Is anyone keeping their driver board's separate from their fixture? If so, what type of molex connector are you using from the PCB terminal block to the Leds? I'm looking for something that can be screwed down with (8) places to accommodate one board. I'm putting everything in a computer tower. I found a bunch locally on craigslist for $15-$20 with the 12V 350 watt power supplies still in them. If I use it, I can run all my fans, controller and moon lights off one PS.
rrasco
Active member
Mfr Part: 1751303
Remember there is a BOM on the Google Code site.
http://code.google.com/p/meanwell-ldd-led-driver/downloads/list
