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

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kelsey
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Thanks for the reply.

A few things.

  • Those pads you circled in green don’t do anything for the function of the board, they are just an anchor point for the larger pads soldered on and I should be able to solder the wires directly to the “actual pads” you marked. Correct?
  • When I apply voltage to the “actual pads” the leds do not light up. Switching polarity makes no difference. However if I apply voltage to the “actual pad +” to the smaller pad + just above or the the top negative pad the leds light up. I desoldered all the components except the bridge and I get the same result. Should this be happening?

If everything is working as intended, should I be able to just apply voltage to the correct pads and the leds should light up, or must it go through the driver first with the other three wires connected? I have been testing with a bench power supply and not using the driver.

I hope this is clear enough.

contactcr
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It’s because the FET is closed. That’s why he keeps using the term in quotes and says that it is not the same as LED -

If you bypass FET with your test leads you can get it to light up (as you found out) but under normal conditions it needs to have the driver control the FET if you are going to use the “normal” pads identified in the picture. It sounds like it is working as intended.

kelsey
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Great. Thumbs Up I’m still a bit stumped on how to hook this up to the driver. I’ve got the LD-B4. I haven’t seen a picture yet of how this would be wired to the board. There are two holes, I think these go the led pads, but where do the blue, red, and white wire go on the connector? I see an M and a G on the driver, I assume these are connected to the MCPCB. Does someone have a picture or explanation?

contactcr
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Datasheet explaining the driver connections (see last page):
https://led4power.com/wp-content/uploads/2017/12/LD-4-datasheet-1.1.pdf

Here is explanation of how JST connector wires are coded and MCPCB layout:
http://budgetlightforum.com/comment/1491546#comment-1491546

kelsey
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Thanks, I didn't realize there was a datasheet. However, I can't get it to light up.

 

2019-12-18_06-16-37

 

2019-12-18_06-13-30

 

Any ideas to why it isn't working? There is no direct short when I hook up the power supply, just an open circuit.

djozz
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I did not have a good enough look to know why it does not light up but you do need better solder/more flux/a hotter solder iron Innocent

kiriba-ru
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djozz wrote:
I did not have a good enough look to know why it does not light up but you do need better solder/more flux/a hotter solder iron Innocent

and heater under pcb
led4power
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kiriba-ru wrote:
djozz wrote:
I did not have a good enough look to know why it does not light up but you do need better solder/more flux/a hotter solder iron O:)
and heater under pcb

This board is easy to solder because of those FR-4 pad boards, easier than average standard DTP board, there is no need to pre-heat MCPCB.

 

Everything looks connected correctly, soldering is a little bit messy, you should try to clean boards and check for shorts, only 3 wires are mandatory for work: thick red and black wires, and thin red (GATE) wire, please check with multimeter if there is connection between pads on driver and pads on MCPCB for those connections, especially gate signal (try to check that connection by placing one multimeter probe directly on mosfet gate pin,which is the most right one if you look from board center).

kelsey
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Ok, I got everything soldered back together, in the process I managed to crush the temp sensor and burn the wire connector so I just soldered them on instead Sad Cleaned the boards up, and the light turns on. I just can’t figure out the UI though, it seems really complicated, and the light doesn’t seem to be following the instructions on the PDF..

Moon seems to be the only mode that works.

kelsey
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Ok never mind that last post. I did in fact ruin the NTC temp sensor unfortunately and melted the connector bit a little, but I got it working, finally! I stupidly had the moon and the gate wires mixed up.

djozz
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I recognize things after a lot of effort just not working, ruining stuff and doing that sort of mixups. Used to do that all the time and it still happens. Glad you got it working! Smile

kelsey
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Here's what I've been working on with this project.

 

2019-12-21_04-05-29

 

2019-12-21_04-10-43

 

2019-12-21_04-06-11

 

It isn't a C8, it's a bit smaller. I bought it on eBay probably around 10 years ago and it was my first light I modded. I thought I would make its final iteration special, it has been through a lot of changes over the years and has been my go-to light. I'm using the Samsung LH351D 4000K burners so it's a great combination of many lumens and a really nice colour. This one won't be banging around in the car getting scratched up. Smile

djozz
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Nice and shiny Cool

contactcr
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Since we are close to store re-opening anything new/updated we should be expecting?

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contactcr wrote:
Since we are close to store re-opening anything new/updated we should be expecting?
LOL Yeah like the dual functioning switch drivers like the old LD-2 and LD-2 M2 in 17/20mm and bigger?

KB1428 “Live Life WOT

djozz
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I hope for the Boost HX becoming stocked Smile

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djozz wrote:
I hope for the Boost HX becoming stocked Smile

Copy that… nice one jozz! Wink

KB1428 “Live Life WOT

led4power
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Hello everyone and happy New Year!

Store is open and it should work, please contact me if something doesn't work.

For now there is no new stuff, but I'm working on it, especially on drivers, but they will take some more time to finish,since it's a lot of work.

But a lot (90%+ I would say) of stuff in store is on New Year/early spring clearance sale, most of mosX MCPCBs,Luxeon MZ, SST-20, alu spacers etc.

Most of those, once they are sold out, will be no longer available.

Also one note, LEDs and optics are not available in "bare" form due to some business reasons, you can still (technically) buy bare LEDs by purchasing 16 or 20mm DTP PCBs and checking "Don't solder LED" box. You will need to buy DTP PCB of course, but most of them is on clearance sale anyway, so price is good. You can also buy optics together with compatible MCPCBs, there is checkbox "add xxx optics" option.

Also, most prices are now nice and "round", on more silly x.9x prices.

In 2020 I will spend more time on developing new generation of DTP PCBs, springs and drivers, with focus on innovation.

 

 

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Yep the site is up and working fine.. ordered a couple CULNM+1.TG *1mm2 20mm and a couple of the Q8 boards.. thanks Neven and Happy New Year!

KB1428 “Live Life WOT

Photonica
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Welcome Back!

More Photons!

Chatika vas Paus
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led4power wrote:
Also one note, LEDs and optics are not available in “bare” form due to some business reasons, you can still (technically) buy bare LEDs by purchasing 16 or 20mm DTP PCBs and checking “Don’t solder LED” box. You will need to buy DTP PCB of course, but most of them is on clearance sale anyway, so price is good. You can also buy optics together with compatible MCPCBs, there is checkbox “add xxx optics” option.

Why?
I had 10 luxeon v2 in the basket without mcpcbs. I would like to buy them without mcpcb because I don’t need them and they inflate the price. If we can buy leds without soldering, why can’t you buy leds separately, without mcpcbs?

If you don’t want to change it, could you at least add the “Don’t solder LED” option to triples and quads?

contactcr
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You mean you are buying 1 LED and 9 spares right? Smile

Chatika vas Paus
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9 leds and 1 spare. I want to put them in G180.

contactcr
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Lol just kidding trying to work around the rules

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Happy New Year!

Neven, would removing the mosfet and bridging the connection on the MosX MCPCB with the Luxeon MZ allow it to be used like a normal MCPCB with only two power leads connected from a standard driver?

Interested in using one in a standard triple host without use of an LD-B4 driver.

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Hey, happy new year, Neven.
I just bought some stuff a few hours ago. Smile

I really hope you’ll have some e-switch drivers for us soon.

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@kelsey Lovely polished bare Aluminium. Love

led4power
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Jerommel wrote:
Hey, happy new year, Neven. I just bought some stuff a few hours ago. Smile I really hope you'll have some e-switch drivers for us soon.

Just one driver teaser information, there will be two main types of drivers, one clicky only (lower cost and size) and other clicky and e-switch (high end) driver, hardware concept is done on paper, next step is prototypes and of course software part. First type of driver(clicky only) will be released first. All drivers will be for 1S (4.3V), HV (1S-4S) version of second type of driver will come later, after 1S development and release.

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Any chance for BLF firmware on that e-switch driver?………..

led4power
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 Let's say new drivers UI should be flexible enough that you will be able to mimic most UIs.

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