Review. LD30 one or two AA driver, 3 mode.

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MRsDNF
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Review. LD30 one or two AA driver, 3 mode.

This is just a quick review on the LD30 driver purchased from Banggood on the 30.5.15. This driver looking at pictures from different sources does appear to be slightly different from each other. 

The driver would not operate correctly above 2.8 volts so all testing was carried out below this voltage. 

Low voltage protection appeared to kick in just below .8 volts with the driver switching off. To get the driver to operate again the voltage had to be raised to around one volt.

There was no mode memory with the driver always starting on low mode regardless of which mode the light was switched off on (makes sense to me). Smile

The led wires for the led were attached to the driver and were large enough being 24AWG for the current output of the driver on high. No contact for the positive on the battery to contact the driver is present so a small spring or button will have to be soldered to the positive pad for the battery to contact. I have noticed and have purchased this driver elsewhere where it has a small pad attached already for the positive on the battery to contact. The driver itself measures 17mm in diameter.

Edit. All testing was carried out on my bench power supply and an XML-2 led on copper MPCB on a suitable heatsink used for the load on the driver. A fan was used to cool the driver and led during testing

 

LD30 3 Mode Driver   Low

Input Voltage

Input current

Led Voltage

Led Current

2.8

.04

2.62

.35

2.6

.04

2.55

.01

2.4

.04

2.55

.01

2.2

.05

2.55

.01

2

.05

2.55

.01

1.8

.05

2.55

.01

1.6

.05

2.55

.01

1.4

.05

2.55

.01

1.2

.05

2.55

.01

1

.06

2.55

.01

.8

.07

2.55

.01

 

 

LD30 3 Mode Driver   Med

Input Voltage

Input current

Led Voltage

Led Current

2.8

.14

2.7

.1

2.6

.15

2.7

.1

2.4

.17

2.7

.1

2.2

.18

2.7

.1

2

.19

2.7

.1

1.8

.2

2.7

.1

1.6

.22

2.7

.1

1.4

.25

2.7

.1

1.2

.29

2.7

.1

1

.35

2.7

.1

.8

.43

2.7

.1

 

LD30 3 Mode Driver   High

Input Voltage

Input current

Led Voltage

Led Current

2.8

.7

2.97

.46

2.6

.74

2.97

.46

2.4

.76

2.97

.46

2.2

.85

2.97

.46

2

.93

2.97

.46

1.8

1.02

2.97

.46

1.6

1.15

2.97

.46

1.4

1.33

2.97

.46

1.2

1.58

2.97

.46

1

1.95

2.96

.45

.8

1.85

2.93

.4

 

djozz quotes, "it came with chinese lettering that is chinese to me".

                      "My man mousehole needs one too"

old4570 said "I'm not an expert , so don't suffer from any such technical restrictions".

Old-Lumens. Highly admired and cherished member of Budget Light Forum. 11.5.2011 - 20.12.16. RIP.

 

Edited by: MRsDNF on 10/12/2015 - 16:14
Rufusbduck
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Looks like it needs a B+ from one of those 5-15V 19mm drivers.

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

Scott

hank
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Hm. Found some at AliExpress and took a chance on a few.  They did come with springs on.

http://www.aliexpress.com/item/LD30-flashlight-driver-circuit-board-CR12...

Fortunately the ones I got were better made than the ones they picture.  Look at the soldering on the connecting wires pictured at the web sales page.

Rufusbduck
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Isn’t the 12F683 a pic mcu?

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

Scott

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Rufusbduck wrote:
Isn't the 12F683 a pic mcu?

Yeah it is. You can see the Microchip logo.

hank
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um, educate me about that? Pls?

MRsDNF
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I guess it stands for the master control unit. What modes did yours have Hank?

 

djozz quotes, "it came with chinese lettering that is chinese to me".

                      "My man mousehole needs one too"

old4570 said "I'm not an expert , so don't suffer from any such technical restrictions".

Old-Lumens. Highly admired and cherished member of Budget Light Forum. 11.5.2011 - 20.12.16. RIP.

 

hank
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Pending assembly.

And, oops, my mistake, the ones I bought came from BG: http://www.banggood.com/LED-Flashlight-LD30-Boost-12-AA-Cell-Circuit-Boa...
SKU 110754 (they sell a package of three)

Quote:
Modes: low(7mA),niddle(100mA),high(500mA)

But the picture on the page at BG isn’t much like the three drivers they sent me with that SKU label.

The ones pictured at Ali http://www.aliexpress.com/item/LD30-flashlight-driver-circuit-board-CR12...
DO look exactly like what BG sent me. But the description is rather different.

Won’t know what I have til I put it together I guess.

MRsDNF
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Mine also came from BG.  I'd be interested to know if they have changed modes or power output at all.

 

djozz quotes, "it came with chinese lettering that is chinese to me".

                      "My man mousehole needs one too"

old4570 said "I'm not an expert , so don't suffer from any such technical restrictions".

Old-Lumens. Highly admired and cherished member of Budget Light Forum. 11.5.2011 - 20.12.16. RIP.

 

hank
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Can you compare the “LD30” pictures at BG and Ali and say which one looks like what you got from BG?
I hadn’t noticed til today that the BG pictures don’t match what came in the envelope from them (the envelope SDK is as advertised)

MRsDNF
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Smile My driver pictures are in the opening post. I believe they will be similar to yours. I do like the driver though it is expensive. Something I should of mentioned was that I cannot detect PWM on any mode.

 

djozz quotes, "it came with chinese lettering that is chinese to me".

                      "My man mousehole needs one too"

old4570 said "I'm not an expert , so don't suffer from any such technical restrictions".

Old-Lumens. Highly admired and cherished member of Budget Light Forum. 11.5.2011 - 20.12.16. RIP.

 

hank
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OK, you got “1R5” on the big coil, so did I, same what Ali shows —- and yet BG shows “3R5” on that part — and other differences (mine came with springs, appears yours did not, etc.) So it seems it’s just their pictures that are wrong. More to come as time and soldering allows.

EDIT:
installed one. With an amber XPE, It won’t light up at all with 2 NiMH cells, and does light up — no choices, just one fairly bright level — with a single NiMH cell.
This is one of the three I got from BG — IR5 on the big coil, came with a spring attached.

Installed another. With a blue-white whatchamacallit cree-clone emitter, one very dim level with one NiMH; three levels with two NiMH.
So maybe I screwed up the first one. They’re supposed to be constant-current … eventually I’ll swap emitters and see what’s the difference.

Rufusbduck
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A few members here can know enough about pic mcu’s to program certain ones. CK and tterev at least. Maybe Tido as well.

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

Scott

hank
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I screwed up the first one. Tried a 3v LiFePO4 in it and the smoke leaked out, but something was wrong with it before that as described above.

Had 2 more.
Put both of them into 2-cell Solarforce “L2 Series” lights — that’s the “D18” long tube they sell.
One with an amber XP-E from FT, the other with a Nichia 219B from DX
Using 4/3AF NiMH cells (the “18650-size” NiMH).

Both behave about the same way, with three modes:
— a very low “moonlight”
— a bright, and
— another bright very slightly brighter

The higher brightness levels aren’t much use because within less time than it takes to walk the dog, they suddenly go very dim, presumably the battery voltage sucked down too low. The low brightness isn’t much use except in total darkness.

The amber at low is a nice nightlight, good enough for walking around indoors, dim enough to leave on all the time, and stays lit for days on end.

I’ll try it with a more efficient XP-E2 amber from MT next.

The Nichia B at low is decent moonlight and fine at the higher brightness as long as it lasts.

I’ll try it with a Nichia C from MT next

I don’t dare try using a 3V LiFePO4, though I really wish I could. But having smoked the first driver, I have my doubts.
And at least as these are now they’re usable.

I do kind of like the size of these Solarforce 2-cell tubes.

My goal was something I can give away to people I wouldn’t afflict with Li-ion cells because I don’t want them to blow themselves up on my advice.

Still haven’t found a driver I can put into 1-cell lights to give away my older 18650-sized hardware.

eebowler
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Hank, I got two from aliexpress (Simon) and they DO NOT behave anything like the originals and different from what MRsDNF posted. Will post info from the other thread here and update both when I get more info.
.
NEW VERSION:
Hey all. I got a couple LD-30s from Simon on aliexpress. They do not have ‘LD-30’ written on them but are similar in design to the original driver from above.
.
I HATE THEM!!
1)With one freshly charged, C size, NiMH cell, I get a low that’s almost sub lumen, medium is 310 mA and high 570mA (LED current). The difference between high and med are hardly noticeable. There is also a horrible flash when going from high to low. Before I freshly charged the cell, it was charged less than a month ago and unused.. The driver would go from moonlight to medium then flash and go to monlight. It did not go to high, it did not give any low voltage warning.
.
2) Before testing with the NiMH, I initially put the driver in a 2D maglite. It would come on in moonlight, go to moonlight 2, (a minuscule amount brighter) then go to medium. I thought the cells were too depleted so bought two energizers and got the SAME RESULTS. This maglite initially had a 400mA nexgen from the sandwichshoppe which performed without a hitch with the same old cells.
.
3) With any of the D cells, new or old, the driver does its moon, med, flash thing again.
4) with a depleted primary lithium, AA, (1.63 unloaded V,) it also does the moon, med, flash…

.
The whole reason for buying this driver was to upgrade the 2D mag so it will have three modes and now, even with two D cells in series, it doesn’t do what it is supposed to do.

EDIT; I have one of those 2596 buck drivers/chargers. I’ll connect a voltage display and connect it up to the driver asap.”

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

MRsDNF
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I think that when the input voltage gets close to the led voltage that the driver I tested played up so at 3 volts the driver played up like yours. I had no flashing or any other issues.

 

djozz quotes, "it came with chinese lettering that is chinese to me".

                      "My man mousehole needs one too"

old4570 said "I'm not an expert , so don't suffer from any such technical restrictions".

Old-Lumens. Highly admired and cherished member of Budget Light Forum. 11.5.2011 - 20.12.16. RIP.

 

Fritz t. Cat
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I found one LD30 from http://www.aliexpress.com/store/product/LD30-flashlight-driver-circuit-b... to be unusable, because low voltage protect kept switching to lower modes. I complained, and Simon sent one that appears so far to be good for disposable cells. It seems to hunt for the best current for the cell, but I don’t think it has any sort of low voltage protect. I don’t have a light to try it in or a good test setup, so that is all I can say at this time. So I recommend getting them there and reminding him that you don’t want LVP.

Flashlight designers should look at lighthouses and pottery.
这些谁设计的手电筒应该看灯塔,以及在陶器。

MRsDNF
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Were you using one or two cells? All these reviews are out of date on these drivers as the ones I have received recently (I dont have in front of me where they came from) are different in all aspects of operation to others I’ve used in the past. Each seller seems to have their own preferences.

 

djozz quotes, "it came with chinese lettering that is chinese to me".

                      "My man mousehole needs one too"

old4570 said "I'm not an expert , so don't suffer from any such technical restrictions".

Old-Lumens. Highly admired and cherished member of Budget Light Forum. 11.5.2011 - 20.12.16. RIP.

 

Fritz t. Cat
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I tried with 1xAAA and 1xCR123A with longer and shorter leads. I think now I do have a RoMiSen RC-A8 that I can spare to put it in, so I may know more soon.

Flashlight designers should look at lighthouses and pottery.
这些谁设计的手电筒应该看灯塔,以及在陶器。

Fritz t. Cat
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I have it in a RoMiSen RC-A8 now. It woks. Three modes starting on low. No LVP. High on an old CR123A is 0.8 A, and it is almost as bright as one that draws about twice the current.

Flashlight designers should look at lighthouses and pottery.
这些谁设计的手电筒应该看灯塔,以及在陶器。

hank
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Do you think Simon made you that driver specially?
Can you compare a picture of the others to that one?

Or does he have a reliable source for a version that will behave that he can sell?

I’d sure like to know if it can work with 2xNiMH (2.4v)

MRsDNF
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This is what I bought on the 15.4 16. I cant vouch for the low voltage protection. They were 3 modes with memory and running two cells doubled the output. Cant remember exactly what that was though. All the rest I have bought were the same current at the led with either one or two cells.

 

djozz quotes, "it came with chinese lettering that is chinese to me".

                      "My man mousehole needs one too"

old4570 said "I'm not an expert , so don't suffer from any such technical restrictions".

Old-Lumens. Highly admired and cherished member of Budget Light Forum. 11.5.2011 - 20.12.16. RIP.

 

Fritz t. Cat
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My guess is that Simon or whoever he got it from deleted the LVP from the firmware for me, because I made an argument that is how it should be. That version might already have existed, but it took a while to come, so I don’t think he had it in stock. Anyway, I don’t think he did it just for me, I think he probably has that version in stock now. I called it a requirements problem.

Flashlight designers should look at lighthouses and pottery.
这些谁设计的手电筒应该看灯塔,以及在陶器。

hank
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Fritz, can you try that with one, and with two, 1.2v NiMH (eneloop) cells?

If it works, it’d be what I’ve been hoping for (to downgrade ‘last year’s’ 18650 lights to use 4/3AF NiMH, and give away)

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hank wrote:
Fritz, can you try that with one, and with two, 1.2v NiMH (eneloop) cells?

If it works, it’d be what I’ve been hoping for (to downgrade ‘last year’s’ 18650 lights to use 4/3AF NiMH, and give away)


I’m interested too!

The Cycle of Goodness: “No one prospers without rendering benefit to others”
- The YKK Philosophy

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As I remember, it did work well on one NiMH. It works well in the RC-A8 which is similar to 2x NiMH. Compared to a simpler driver I have in an RC-A8, it has a little less output but a lot less input, which would be good for a light to give away. It ramps up and down the current in surprising ways, like coming on bright in a low mode then dimming to the mode level.
I am not set up to test drivers, and this thing isn’t simple. My guess is that it will be better than anything else I have tried in most of these applications, and it isn’t too expensive to try.

Flashlight designers should look at lighthouses and pottery.
这些谁设计的手电筒应该看灯塔,以及在陶器。

hank
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Quote:
It ramps up and down the current in surprising ways, like coming on bright in a low mode then dimming to the mode level.

Hm, that sounds like one of the problems I had with the LDCH drivers I’ve tried in the past.

I’m going to keep waiting for the driver RMM says he may sometime have instead.

MRsDNF
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I’ve just carried out a quick test on this driver purchased on the 5.4.16. It has a small spring on it which the pictures dont show. Its 3 mode with last mode memory.

http://www.banggood.com/LED-Flashlight-LD30-Boost-1-Or-2-AA-Cell-Circuit...

On high the driver drove the led at 1 amp between 2.8 volts and 1.6 volts, input voltage to the driver where it stepped down to a moonlight low.

On high the driver drove the led .56 amp between 1.5 volts and 1.1 volts, input voltage to the driver where it stepped down to a moonlight low.

The led used in the testing was an XPG2 R5 3C on a Noctigon 16mm MCPCB mounted to a chunk of aluminium.

 

djozz quotes, "it came with chinese lettering that is chinese to me".

                      "My man mousehole needs one too"

old4570 said "I'm not an expert , so don't suffer from any such technical restrictions".

Old-Lumens. Highly admired and cherished member of Budget Light Forum. 11.5.2011 - 20.12.16. RIP.