Led4power.com : LD-4 CC linear drivers, ILC-0/1 illuminated tailcaps, optics, MOSX, copper DTP MCPCBs...

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Barkuti
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I have never seen 3030 or 4040 multi-emitter boards, like this or the quads here (hint, hint). 

Deleting a just published post causes the forum thread answer notification to fail. Thus, if you need to change your just published post, edit it. Thanks.

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drizzydrake100
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so did you start the work on the sofirn 2700 kit yet?

Drizzydrake

forsh
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Any time frame when the shop will be open buddy ?

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MascaratumB
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forsh wrote:
Any time frame when the shop will be open buddy ?

From post #1374:

led4power wrote:

Store will be opened in first week of 2021.

led4power
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Notice: on 28th Dec a quite strong earthquake (for this area at least) with 6,4 magnitude struck Croatia, epicenter was just about 6km from my business address which caused some damage to building, so building is closed for safety reasons.

Because of this, store opening is postponed until further notice.

 

Matjazz
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Good to hear you’re OK. I was worried. Take your time Thumbs Up

Now I see

Scallywag
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led4power wrote:

Notice: on 28th Dec a quite strong earthquake (for this area at least) with 6,4 magnitude struck Croatia, epicenter was just about 6km from my business address which caused some damage to building, so building is closed for safety reasons.


Because of this, store opening is postponed until further notice.


 


Safety first. Flashlights can wait. Glad you’re okay.

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djozz
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Good luck with the repairs, I hope you had some insurance for this. You were very unlucky to have been so close to the epicenter Shocked

Superstocker
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Sorry to hear about this. I hope you are doing ok and that the damage will not affect you too terribly much.

MascaratumB
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led4power wrote:

Notice: on 28th Dec a quite strong earthquake (for this area at least) with 6,4 magnitude struck Croatia, epicenter was just about 6km from my business address which caused some damage to building, so building is closed for safety reasons.


Because of this, store opening is postponed until further notice.


Sorry to hear that Oops
I hope you and your stuff are safe ! I’m sure we’ll be here to fill the orders when the store opens Wink

Take your time and stay safe Thumbs Up

dropman
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Hope that store will be open soon and no damage to people and stuff.

I am facing problem with LD-4a driver in S2+ host with nichia 219C led. I set driver to 4Amp constant current and I get about minute or two runtime till internal temperature protection shuts down the light. By then light is about 50-60 degrees C hot.
Manual says about using silicone sheets inside driver pill.
Will these silicone cubes from kaidomain work? http://kaidomain.com/S024143-DIY-1cm-x-0_5cm-Thermal-Conduction-Silicone-Rubber-Cubes-5-pcs

KevinZA1988
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That will work. I had a similar problem in a S3 host. Squeeze as much in as possible.

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dropman
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I just hope that combination of 219C and 4 amp constant current is not a problem. Will order these cubes and try.
Thanks

KevinZA1988
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I think the diffrence between 219C Vf and cell voltage is too high. And the issue will be more pronounced at lower modes because of less cell voltage sag.

I experienced that issue with a Luxeon V. And with the 3V XHP50.2 it was even more pronounced. Then I tried XP-L HI, No issues at all…

The silicone cubes cured the problem for the Luxeon V but the XHP50.2 Vf is so low that it still caused the driver to overheat after about 5min on lower modes with a fresh cell.

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Most of them have been modded! =)

https://photos.app.goo.gl/JaJaDv4V838AEJf39

led4power
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Thanks Kevin for answering to these questions to dropman.

3-4Amps is usually where power dissipation in driver is max.

Adding some thermally conductive material like those silicone cubes helps a lot, but just putting piece of cube in pill wouldn't help much if cube is not in good contact with both pill bottom and fet top surface.

This means amount of silicone pieces should be such that you feel slight pressure during driver retaining ring installation.

Other solutions is to use lower power/higher capacity batteries (30Q doesn't make sense for 4Amps), not using spring bypasses etc.

 

Yourrid
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Does anyone have a link to the UI for the LD-A4 driver? I just discovered I have 2 of these drivers tucked away and never used them. I’m trying to figure out how to set the amperage on the driver. Thanks!

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Google: ld-4 datasheet

and click on the first link.

Yantar
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Regards!

Yourrid
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led4power and Yantar. Thank you so much!

thijsco19
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My convoy l2 with a ld-4 is acting weird.

If I want to change modes it flashes once and it remains the same brightness level but after one second it drops power, or increases if you go from low to high.

I looks like I only have 2 modes now.

I’m not sure what the exact driver is, I also have a lighted tailcap installed.

KevinZA1988
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Seems like you are in programming mode… do 10 to 12 consecutive half taps, the light will then turn off. Should be fine then. I highly recommend reading the manual thoroughly.

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Most of them have been modded! =)

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thijsco19
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Does it stay in programming mode even after disconnecting the power?

Haven’t tried it so will do.

KevinZA1988
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No, that is now you enter/exit programming mode.

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Most of them have been modded! =)

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NotSoBright
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Yes, it will still be in configuration mode after turning it off/disconnecting power.

Read the data sheet linked above ^ and the added side notes (extremely helpful side notes).

Only way to exit is to click out, or leave the light on/idle for 30 seconds,

thijsco19
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Thanks guys that did the trick.

Would’ve never thought it was in programming mode. Haven’t touched that light in maybe a year.
Even after reading, although it was a quick read, the datasheet I wouldn’t have thought about it.

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You can enable Configuration menu password, this will prevent unwanted entering into config. menu after 10+ half-clikcs (with configuration menu password enabled, only possible way to enter into config. menu is to enter 1865 password via clicks).

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I recently put together a light with LD-4B , 3up Mosled and one of these tail switches…

The light is acting only in single mode and I can’t seem to get into programming. Any suggestions on what i’ve done wrong?

forsh
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Is led4power webshop going be online sometime ?

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Join my Facebook FW3/4/1 selling and buying group guys

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pinkpanda3310 wrote:
I recently put together a light with LD-4B , 3up Mosled and one of these tail switches... !{width:20%}https://led4power.com/wp-content/uploads/2017/07/DSC06570-300x300.jpg! The light is acting only in single mode and I can't seem to get into programming. Any suggestions on what i've done wrong?

 

Does that LD-B4 has bleeder installed? Check driver with normal clicky switch to see if it works ok.

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forsh wrote:
Is led4power webshop going be online sometime ?

Yes, but I cannot get the exact date, I expect to have clearance sale in about 10-15days.

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