Meanwell LDD driver: for those who want to dim to 0 using Arduino

I received a PM today that got me thinking- There are a lot of people out there using some of my & others LDD-H PCB designs that don't include an SCW convertor or cooling fan controls. Could there be a way to provide an SCW and fan controls without having to scrap an older design?

Here's what I came up with- It's an PcB adapter that allows an SCW convertor to plug in to a slot that was designed for an LDD-H. The adapter carries the PWM cooling fan controls and allows the user to connect a 2 wire fan to the led output terminals on the original LDD-H PCB. The original PWM pin has been re-purposed to provide an "on/off" signal or speed control. The adapter offsets the SCW slightly off center to the right, so fitment may be an issue on some PcB designs.

Here's a photo-

SCW_to_LDD-H_2wire_Fan_Control_Adapter_zpscf60ff5f.png


Let me know what you guys think? I'll probably order a batch of these just to try them out. If they work as well as I expect, I'll post the build files if there's an interest.
 
rrasco said:
Man, I haven't been in this thread in a while. Awesome to see things are still evolving. I've been too busy to build fun stuff lately, but I'm hoping to start a new build in the near future.

Now you guys have me wanting to read the last 15 pages to see what I missed! I see O2 is still being ingenious.
Click to expand...

I wish you would update the 4up board, or better yet, I need to learn Eagle lol. I love O2's stuff, it's just your 4up board was so clean I had to use it.

270 Watts of Glorious LED POWA!!!!!! (16 drivers/4 boards lol)
 
O2's Rocks :) Not saying other designs are not good just i like Meldrath took the plunge and orded 10 of the boards not got round to doing any soldering yet as he keeps bringing better and better boards out lol
 
Meldrath said:
I wish you would update the 4up board, or better yet, I need to learn Eagle lol. I love O2's stuff, it's just your 4up board was so clean I had to use it.

270 Watts of Glorious LED POWA!!!!!! (16 drivers/4 boards lol)
Click to expand...

I missed a bunch of pages so it's probably obvious, but what would you like to see added to them? I could probably update them easy enough.
 
BOOM!



10cmx10cm
8 channels
2 SCW convertors
4 PWM controlled fan connections
Power Supply inputs Isolated for use with separate power supplies.

It's purely an experiment at this stage, as I don't know if it'll work until I put one together LOL. The PcB's have been ordered and testing should be completed by the end of February LOL.

8upLDD-HampDualSCW_zpsabdc6ddb.png

 
I thought that I had everything to solder my new boards from O2 up, but I can't find my screw terminals and had to order them. Poop.


I can't wait to get this light finalized. Just waiting on Nanobox to finish up my housing and I'm waiting on some bin-specific 465nm XP-E2 to come in. :)
 
Do the 4 pwm fan pins come from the scw also?? What I am getting to is instead of the two scw can I connect 12V external source maybe have a 2 pole connector attached for power input to run larger fans and still be able to use the pwm fan pins
 
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