megadeth72-
If you need a PCB with 5 LDD's just let me know and I'll draw one up for you.
A batch 10cm x 10cm PCB from Itead only costs about $25, so it's not a bad deal.
Meanwell LDD driver: for those who want to dim to 0 using Arduino
- Thread starter pwreef
- Start date
megadeth72-
If you need a PCB with 5 LDD's just let me know and I'll draw one up for you.
A batch 10cm x 10cm PCB from Itead only costs about $25, so it's not a bad deal.
Whitebeam
New member
Now that's the board I need! If anyone in the UK gets any of these made and has a spare, give me a call please!
Peter
megadeth72
New member
that looks great, if you finish it I'll order some
megadeth72
New member
same here, for a dreamchip
dwolson2
New member
Mine are for the dream chip too...lol
Dave Thebrewguy
New member
I followed it at first but gave up, it may be somebody's dream but it is certainly not mine. IIRC, it's 40% RB 40% CW (split between 2 temperatures, but both CW) and 20% violet. It's a slight improvement over a straight CW/RB chip but there's still plenty of room for improvement. There are versions for 50W and 100W last I heard.
megadeth72
New member
dream chip for me, compared to everything else out there. If I could change it, i would run 10 less 10k and 10 6500 instead and maybe some red, not sure how that would pan out though, I dont like blue, the dreamchip's are a pretty white chip from what I've seen, which is what I like
you can run 1400ma if your cooling supports it, I'll be running 1000ma but probably dimmed to around 700
20 x 10000K
20 x 455nm (blue, beneficial to chlorophyll C)
10 x 420nm, 10 x 430nm (UV range)
20 x 445nm (blue, beneficial to chlorophyll C)
20 x 15000K
you can run 1400ma if your cooling supports it, I'll be running 1000ma but probably dimmed to around 700
20 x 10000K
20 x 455nm (blue, beneficial to chlorophyll C)
10 x 420nm, 10 x 430nm (UV range)
20 x 445nm (blue, beneficial to chlorophyll C)
20 x 15000K
bhazard451
New member
That's the main issue with those chips. You can't change the layout to something more preferable. IMO the changes you want would make the chip look even better.
A 5 LDD board would probably be perfect for it.
megadeth72
New member
I'm running a pendant, so I always have that problem
there will probably be more of these type chips coming out, there's already a copy of it being sold with the same layout
dwolson2
New member
I am running 2 of the chips, so I am going to use 3 boards(2*5=10 channels, and the 2 extra will be for my reds and greens)
That said, it has a little room for improvement, but considering the 60led hybrid chips are 90~$ and the 50led "dream" chips were 63~, and I didn't need as much power and the hybrid is capable, I went for the dream chip. At least I can adjust to what color I want with the dream chip as opposed to being stuck with whatever color I get.
To answer your question, the Peak for the 50 is 700ma where the 100 is 1.4A(I think) the recommended is 600ma for the 50 and 1A for the 100. I will be using 10- LDD-H 600 and 2-LDD-H 700's for my red and greens.
That said, it has a little room for improvement, but considering the 60led hybrid chips are 90~$ and the 50led "dream" chips were 63~, and I didn't need as much power and the hybrid is capable, I went for the dream chip. At least I can adjust to what color I want with the dream chip as opposed to being stuck with whatever color I get.
To answer your question, the Peak for the 50 is 700ma where the 100 is 1.4A(I think) the recommended is 600ma for the 50 and 1A for the 100. I will be using 10- LDD-H 600 and 2-LDD-H 700's for my red and greens.
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.
I also attached the gerber files needed for PCB production @ Itead Studio. Just follow their instructions to rename the files with your order number.
megadeth72
New member
is there a howto on ordering? I"m on the ilead site and totally lost
It doesn't show up in the image, but the entire top and bottom side of the PCB share a common ground plane. So the VIN- of each LDD and the negative of each screw terminal gets soldered directly to that. It's a common PCB design practice that saves etching additional ground traces.
