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

A little bit of it. Sometimes. And I love bistroHD just among other things for long press to previous mode.
But…
I mean, I put this driver in Convoy BD06. There is a switch on the side. The thread on the tail is without anodization. When I insert the battery after charging back into the flashlight, I sometimes have the switch pressed, flashlight is turned on, but I don’t know that. Then the flashlight starts flashing when screwing the tail and thus activates this menu.

I can’t get the site to load. Anyone else having a problem?

He is probably doing some maintenance. The site loads in to a single ‘led4power’ at the top.

Hi,
I did it on purpose, as a owner of small company in my country (something similar to "workshop" in US) I reached max. allowed income limit for such small companies this year. This means I can't take any new orders till 01/01/2020. Since I'm expecting income increase in 2020, I will also open "real" LLC/GmbH equivalent company early next year, which doesn't have such limits (but taxes are higher and it's more complicated in general).
Good side is I will have 2months of free time available for new products development, so I will focus on those from now on 100% of time.

Page will be visible soon, but all products will be "out of stock".

So I placed my order just in time today… I’m excited about the new products for next year though. Good stuff Neven!

This sounds like a terrible way to treat business owners. Having something like this you will actually sell more but lose money until you surpass the threshold (again). :person_facepalming:

Oh crap...just as i figured what i need to finish my triple build mayhem... bloody Balkan (al smo sjebani)

Good to hear that you have good expectations for your business. Looking forward to the new site and maybe some nice new l4p developments :slight_smile:

But, but :cry:

:stuck_out_tongue:

I’m glad to hear that your business is doing well. I look forward to supporting you in the new year. I’ll try and help you offset those extra costs some :slight_smile:

Well, this business model is created for start-ups,workshops, etc. and it works ok, there is much less paperwork compared to real limited liability company, so I'm not complaining.

Before that model, there was basically nothing that would be good for "start from scratch" companies, rules and amount of paperwork are the same regardless of your income and size of your company, 10 000€ or 100 milion € income - same rules.

Anyway,plan is to have new LLC for bigger customers/orders, and leave this smaller company/workshop for small orders.

You had me worried but I’m relieved to se the page is only temporally down because the business is running well :+1:
Despite the new bureaucratic obligations I think congatiolations is in order!

I wanted to make an order, saw everything out of stock, just read the last posts of this thread. good to hear its just temporary and everything is going well !

Congratulations, I think.

I would like a little help here.. I ordered the MOSX2 4xP-C MCPCB awhile ago (with leds) and ended up ruining it by drilling out the mounting holes too much and shorting the traces to the base. I ordered another one after that and re-flowed the components to the new board but still can't get it to work properly. Below is a picture explaining the problem.

Basically if I solder the led pads onto the board it shorts out some of the traces. I checked the traces to the aluminum base and there is no continuity there so I don't think I've done what I did last time.

You need to use those small FR-4 pad boards on those pads first, without them it's very hard to solder wires because this board is large and sucks heat from soldering iron too quickly:

Without those pad boards, actual + and - pads are these:

Pads in green are just there for mechanical purpose, to make soldering pad boards easier, you can see vias on pad boards only connect actual + and - pads to upper copper layer.

Note: "- pad" here means pad which connects wire to mosfet Source pins, not LED - (cathode).

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.

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.

Great. :+1: 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?

Datasheet explaining the driver connections (see last page):

Here is explanation of how JST connector wires are coded and MCPCB layout: