US GB, LD-2 driver by led4power. One member hasn't received theirs yet, anyone else? Please chime in.

265 posts / 0 new
Last post
Kloepper Knife Works
Offline
Last seen: 5 years 6 months ago
Joined: 12/07/2014 - 21:28
Posts: 1405
Location: Lincoln, NE

Got my package, haven’t yet opened to check out the goods. Trying to hold off playing with the new toys till I finish a couple of builds.

DB Custom
DB Custom's picture
Offline
Last seen: 1 week 2 days ago
Joined: 01/13/2013 - 22:28
Posts: 20733
Location: Heart of Texas

I felt inspired to use my first LD-2 in a build, so I rebuilt a new Sunwayman T40CS. Putting the moon components on wasn’t horrible, used my standard 2.5mm wedge tip and did it by eye. But then getting the NTS resistor and the fine wires for it and the e-switch and getting all that together was sort of a challenge.

Initially, I saw low lumens output. Realized a few things simultaneously… my HE-4 was down to 3.93V and I didn’t put spring bypasses on the stock springs. So, once I got all that taken care of this baby SHINES! (I should disclose that I ground off the top edges of the pill area and put a 32mm Noctigon on the now flat surface.) With an XP-L V5 1A in place this baby does…

03.86 lumens in moon
61.55 in low
523.37 in Med
1752.6 in High or Turbo

I got 5.86A at the tail once I got a decent dummy cell made for single cell operation in this twin tube light. (I cut a 3/4” thick G10 square, 65mm long, bored it out with a 3/16” bit and hammered a 3/16” brass rod into the middle for the dummy cell. Had to grind off the corners of the 3/4 × 3/4” square piece so now it works beautifully!)

I like having a cut off tail switch that totally kills power AND an e-switch on the side for modes. I got this $120 Sunwayman on sale through touch of modern for $53, now it’s a very nice light that makes loads of output and is very efficient at the same time. Smile

One down, 9 to go…

MG
Offline
Last seen: 5 months 1 day ago
Joined: 01/26/2015 - 18:02
Posts: 1031
Location: US

They arrived. Thanks for the careful and well-thought-out packaging.

Fun and games tonight….The soldering iron is already heating up.

Hope everybody else got theirs.

A Toast to you Rufus B!

netprince
Offline
Last seen: 5 hours 14 min ago
Joined: 06/14/2012 - 13:48
Posts: 647
Location: Virginia

I got mine too. Thanks. Now I just need something to build with them…

Rufusbduck
Rufusbduck's picture
Offline
Last seen: 6 months 1 week ago
Joined: 04/04/2012 - 15:34
Posts: 10389
Location: Golden state

Still have several in limbo.

Three Tanna leaves to give him life, nine to give him movement. But what if he eats the whole bag?

Scott

Rufusbduck
Rufusbduck's picture
Offline
Last seen: 6 months 1 week ago
Joined: 04/04/2012 - 15:34
Posts: 10389
Location: Golden state

Fwiw the mailing cost broke down this way. A photo mailer is normally just first class postage or in this case .49 but because of the non bendable nature of the wafers an extra .22 is added for “non-machinable”. Orders of 10 boards or lots of extra wire were over 1oz so some had an extra oz stamp of .22 in addition. Outside the US(Canada, etc.) has a base of $1.20 to which non-machineable and extra oz postage may be added. Only the large combined order of DB custom and jubeldum was more than 2oz so the mailers are by far the least expensive way to go with items that can be packaged 1/4” thick or less. Springs and led wires would necessitate different packaging and postage.

Three Tanna leaves to give him life, nine to give him movement. But what if he eats the whole bag?

Scott

Lotus_Darkrose
Online
Last seen: 4 min 7 sec ago
Joined: 06/20/2014 - 13:50
Posts: 123
Location: Lower Michigan

Sorry, little late on this.

I got mine in the mail a while back.

It probably works fine, but I think my LED setup needs some work because there’s flickering. Pretty sure it’s not the driver, but I will have to revisit my build in a little while. Thanks for the opportunity to get one of these Smile

DB Custom
DB Custom's picture
Offline
Last seen: 1 week 2 days ago
Joined: 01/13/2013 - 22:28
Posts: 20733
Location: Heart of Texas

And if you were to jump in the car and run something to a friend across town, what would that cost in gas, time and wear and tear to the vehicle (barring an accident or ticket of course?)

Pretty dang cheap to stick even a single driver in a flat rate box and have it go across the country, insured, for $5.25 in 2 days.

Rufusbduck
Rufusbduck's picture
Offline
Last seen: 6 months 1 week ago
Joined: 04/04/2012 - 15:34
Posts: 10389
Location: Golden state

Just a reminder to post when you get them, please.

Three Tanna leaves to give him life, nine to give him movement. But what if he eats the whole bag?

Scott

MG
Offline
Last seen: 5 months 1 day ago
Joined: 01/26/2015 - 18:02
Posts: 1031
Location: US

Why did I only get two of these?

They are really working out well.

Should have taken a clue from DB….

Lotus_Darkrose
Online
Last seen: 4 min 7 sec ago
Joined: 06/20/2014 - 13:50
Posts: 123
Location: Lower Michigan

It was definitely my LED setup. I had the 3 XP-Ls on separate stars when I was having flickering issues.

I scrapped that idea, and just reflowed them onto a 32mm Noctigon triple star. No more flicking.

Driver works perfectly. However, now I have to wait for my even smaller reflectors to come in the mail before I can finally finish this thing lol.

eebowler
eebowler's picture
Offline
Last seen: 8 hours 20 min ago
Joined: 08/13/2012 - 11:34
Posts: 1830
Location: Trinidad and Tobago GMT -4

Thank you Rufus! I got my drivers earlier today! Already stuck the 6A version in a BLF X6 Smile

My gratitude to those who are willing and able to help others (in whatever way you can)! Being human is more than just existing for yourself. Smile

cabfrank
Offline
Last seen: 1 month 1 day ago
Joined: 11/19/2010 - 17:25
Posts: 3119
Location: northern california

How did it turn out?

eebowler
eebowler's picture
Offline
Last seen: 8 hours 20 min ago
Joined: 08/13/2012 - 11:34
Posts: 1830
Location: Trinidad and Tobago GMT -4

I don’t have much tech info since I forgot the DMM home. However, I love it! This is my first ‘off time’ memory driver and it’s a refreshing change from ‘on time’ memory. Big Smile I didn’t do the low resistance mod to the driver side spring since I forgot to put it on before I assembled the light (the excitement lol) and didn’t want to un-solder the wires from the star again, so had to attach a spring with the driver already installed. I also didn’t connect the NTC since I don’t plan to use leave the light on high unattended. The LED is a 4C, XM L2 but will likely be changed to something warmer since compared to another beautiful 4C, this one looks a bit ugly.

My gratitude to those who are willing and able to help others (in whatever way you can)! Being human is more than just existing for yourself. Smile

Rufusbduck
Rufusbduck's picture
Offline
Last seen: 6 months 1 week ago
Joined: 04/04/2012 - 15:34
Posts: 10389
Location: Golden state

Bump. Please tell me you got yours.

Three Tanna leaves to give him life, nine to give him movement. But what if he eats the whole bag?

Scott

syracuse
syracuse's picture
Offline
Last seen: 4 months 4 days ago
Joined: 08/05/2013 - 00:43
Posts: 295
Location: Thailand

My driver doesn’t show up yet. Hope I might get it in a few days. Shocked

will34
will34's picture
Offline
Last seen: 1 day 2 hours ago
Joined: 12/18/2012 - 00:12
Posts: 4092

I got mine last week, took longer because my stuff goes to a cargo warehouse in FL first then it ships to my country.

Thanks Scott for the careful packaging!! Arrived nice and safe.

tristanxoxo
Offline
Last seen: 8 months 4 days ago
Joined: 03/26/2014 - 00:50
Posts: 598

I forgot to respond here. I got the drivers and I am super grateful for your time & efforts.

Rufusbduck
Rufusbduck's picture
Offline
Last seen: 6 months 1 week ago
Joined: 04/04/2012 - 15:34
Posts: 10389
Location: Golden state

Still haven’t heard from n10sivern, electricjelly, scianiac, bribe, or B52.

Three Tanna leaves to give him life, nine to give him movement. But what if he eats the whole bag?

Scott

cabfrank
Offline
Last seen: 1 month 1 day ago
Joined: 11/19/2010 - 17:25
Posts: 3119
Location: northern california

Or me. Wink Thanks again.

Rufusbduck
Rufusbduck's picture
Offline
Last seen: 6 months 1 week ago
Joined: 04/04/2012 - 15:34
Posts: 10389
Location: Golden state

That’s because you’re so special! Wink

Three Tanna leaves to give him life, nine to give him movement. But what if he eats the whole bag?

Scott

electricjelly
electricjelly's picture
Offline
Last seen: 4 days 6 hours ago
Joined: 08/23/2012 - 03:39
Posts: 601
Location: Los Angeles

Hi Rufusbduck, sorry I just saw you wanted us to post when we received the drivers. Yes I received mine right away. Thank you very much for organizing all this.
I burnt out the first one by installing it in my Courui and then shorting the led out on the reflector when putting it back together Sad .
The other one went into my Convoy C8 for now, but I think the driver needs an e-switch host to fully shine.

Thanks again.

Rufusbduck
Rufusbduck's picture
Offline
Last seen: 6 months 1 week ago
Joined: 04/04/2012 - 15:34
Posts: 10389
Location: Golden state

Thanks ej, I was hoping this was the case but in the dark without feedback.

Three Tanna leaves to give him life, nine to give him movement. But what if he eats the whole bag?

Scott

DB Custom
DB Custom's picture
Offline
Last seen: 1 week 2 days ago
Joined: 01/13/2013 - 22:28
Posts: 20733
Location: Heart of Texas

I have used 2 of these to power the new Cree XHP-35 at 12V. Neven was very helpful, letting me know exactly what needed to be changed and what components to order, even provided a DigiKey link.

I have one running 2.39A to the 12V XHP-35 in a Maxtoch SN50 and another doing 3.10A to the same HI variety emitter in an Olight M2X UT Javelot. Seeing 2060 lumens in the SN50, 2300+ in the Javelot. So far so good! Smile

It was recommended that I swap the opamp to a better grade to handle the 4 cells, but by the time I saw that info I had the hotter Javelot epoxied in, literally buried in about 8mm of JB Weld Water Weld. No turning back without a bunch of grinding, if I can even get the driver out of the light to attack it. I did go ahead and order these parts, so we’ll see how everything turns out and I’ll use the new stuff if I build another like this.

The modifications were to use 3 of the 750KOhm resistors on the right hand side of the pair at the opamp (or 250KOhm) and change the opamp to a 27V capable unit instead of the 17V rated one. This little part alone cost me over $5 at Mouser! The big 1M resistor on the inside gets changed to a 2M, and the sense resistor should probably be a 225KOhm for 2A. I left the stock 180KOhm in place and it’s maybe too much, from some testing it might be going over the top of the curve on this new emitter. Lot needs to be done to find out. Oh yeah, if using moon there needs to be a change to accommodate the change to 4 cells as well. Moon output is high otherwise.

Anyway, Just wanted to say this driver is proving very versatile and really enjoying mine so far! Smile

Thanks Neven, for all the hard work and the quick help….

Pages