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

[Krazie4Acans]

O2 I have one more question. I guess anyone that has a Makers Heatsync could answer this. On each side of the heatsync fins there is a vertical channel that has a matching channel on the top mounting rail. Can someone measure the height of that slot for me? I want to make use of those for my extra boards. My heatsyncs won't be here for two more weeks. Thanks All! Krazie:jester:

 

[GiulianoM]

O2 I have one more question. I guess anyone that has a Makers Heatsync could answer this. On each side of the heatsync fins there is a vertical channel that has a matching channel on the top mounting rail. Can someone measure the height of that slot for me? I want to make use of those for my extra boards. My heatsyncs won't be here for two more weeks. Thanks All! Krazie:jester:

I don't yet have a MakersLED heatsink, but I have Sketchup - and they have a good model of the heatsink profile in the 3D Warehouse.


I believe this is what you're looking for?



Note that the vertical channel on the bottom is offset, so it would be about 35.9mm, or closer to 35mm to fit a board in there.

 

[zachts]

O2 I have one more question. I guess anyone that has a Makers Heatsync could answer this. On each side of the heatsync fins there is a vertical channel that has a matching channel on the top mounting rail. Can someone measure the height of that slot for me? I want to make use of those for my extra boards. My heatsyncs won't be here for two more weeks. Thanks All! Krazie:jester:

Google has a sketchup model of the makers heatsink in the free 3d warehouse. sketchup is free as well. You can model or at least measure your whole setup pretty easy. It's a great tool for the DIY'er! I'd check and measure the file dimensions for you but this old PC doesn't have the current version running at the moment so I can't open the model file.......

 

[jsnyder]

@Krazie4Acans it's 1.378 in

 

[Krazie4Acans]

Thanks guy! Appreciate it.

 

[Ligershark]

im using one of 02's scw converters and have it soldered to my coralux board. i also have 2 12v pwm fans connected to a coralux fan control board. my problem is that my fans are always running, even with pwm set to zero. where is this voltage coming from? how can i stop it? the fans are dead silent but i still dont want them to be running without any lights on.

 

[O2Surplus]

im using one of 02's scw converters and have it soldered to my coralux board. i also have 2 12v pwm fans connected to a coralux fan control board. my problem is that my fans are always running, even with pwm set to zero. where is this voltage coming from? how can i stop it? the fans are dead silent but i still dont want them to be running without any lights on.

Are you powering the fans from the SCW adapter or the 12V "walwart"? Please post a photo or wiring diagram of your set up and I'll try to help you out.

 

[Ligershark]

see below

 

[Ligershark]

Are you powering the fans from the SCW adapter or the 12V "walwart"? Please post a photo or wiring diagram of your set up and I'll try to help you out.

unfortunately my attempts at drawing diagrams in sketchup and cad lasted 3 minutes before i almost tossed my computer across the room. power comes from the scw to the fan control board.

my walwart fan from my sunpower is what's currently powering my storm controller.

 

[testt]

On the 4upp or 5up board, can anyone show me a picture of how to install a jumper in order to activate the pull down resistor? What does the jumper connect to?

 

[Krazie4Acans]

On the 4upp or 5up board, can anyone show me a picture of how to install a jumper in order to activate the pull down resistor? What does the jumper connect to?

The jumper connects one side of the resistor to ground. The other side of the resistor goes to the PWM pin. Not all of the board layouts had the jumper. If yours doesn't have jumpers then you can scrape off a bit of the green mask close to the PWM pin so that you can solder one side of the resistor to the pin and the other side to the scraped off area to ground. Krazie:jester:

 

[O2Surplus]

unfortunately my attempts at drawing diagrams in sketchup and cad lasted 3 minutes before i almost tossed my computer across the room. power comes from the scw to the fan control board.

my walwart fan from my sunpower is what's currently powering my storm controller.

Make sure that you're cutting off the 5V signal to the SCW adapter after the fan has been PWM'd to 0%. That should stop the fan in it's tracks.

 

[Ligershark]

Make sure that you're cutting off the 5V signal to the SCW adapter after the fan has been PWM'd to 0%. That should stop the fan in it's tracks.

by "cutting off the signal" do you mean killing power from my switching power supply? if i did that then it would kill my moonlight leds as they are powered by the same power supply.

 

[O2Surplus]

by "cutting off the signal" do you mean killing power from my switching power supply? if i did that then it would kill my moonlight leds as they are powered by the same power supply.

No- Make sure your controller stops sending a 5V "High" or PWM signal to the PWM pin that's tied in to your SCW adapter. Without a signal present on that channel pin, the transistor that controls the 12V output will remain "off" and prevent 12V from reaching the fans.

 

[Ligershark]

No- Make sure your controller stops sending a 5V "High" or PWM signal to the PWM pin that's tied in to your SCW adapter. Without a signal present on that channel pin, the transistor that controls the 12V output will remain "off" and prevent 12V from reaching the fans.

my pwm is set to zero for the fan channel. my fan control board has pins that are connected to the storm, perhaps there are no transistors on the coralux fan board.

i will work on getting a diagram for you. there should be no wires connected to the input side of the scw INPUT correct?

 

[Ligershark]

straight from coralux website. "In the absence of any control signal, the fan will go to its default state, which for most fans is ON."

 

[007Bond]

Hey shark which coralux did you get?---Rick

 

[O2Surplus]

straight from coralux website. "In the absence of any control signal, the fan will go to its default state, which for most fans is ON."

Yeah- it's about 1/2 speed without a PWM signal. It should shut off completely with no 5V signal to the SCW adapter's PWM pin. Please post a wiring diagram- There's definitely something screwy going on here.:lmao:

 

[Ligershark]

Yeah- it's about 1/2 speed without a PWM signal. It should shut off completely with no 5V signal to the SCW adapter's PWM pin. Please post a wiring diagram- There's definitely something screwy going on here.:lmao:

here is a sketch i just made. the jumper cable goes from the fan control board to channel 4 on my controller. in my storm settings i have channels 4 and 5 set to fan use.

is its a coralux 6up board. i do not have any pwm input directly to my 6up board to the scw.

 

[O2Surplus]

here is a sketch i just made. the jumper cable goes from the fan control board to channel 4 on my controller. in my storm settings i have channels 4 and 5 set to fan use.

is its a coralux 6up board. i do not have any pwm input directly to my 6up board to the scw.

Check the negative side of your 12V male power jack for continuity to the ground plane of the 6up PcB.If you find continuity- I'm betting the SCW adapter's negative output leg got shorted to ground when you soldered it to the 6up board. The negative lead (led-) should not have any continuity. The SCW adapter uses a transistor to control the connection between the SCW's negative output pin and ground. The transistor makes or breaks the connection based on the presence of a 5V "high" or PWM signal. If there's continuity to ground, the transistor circuit has essentially been bypassed and can longer control the SCW's output. Let me know what you find.