✌ FREEME - ASTROLUX FT03 Mini OSRAM NM.1 510lm WRGB LED options USB-C 18650/ 18350 Flashlight - ALIVE

Do you happen to know the size diameter of the driver? I just got my white in, not that I even ordered white… I ordered blue, red, green and got orange, white and green… aliexpress…

But the white is… really underpowered. Want to reflow a culpm1 and put simons 8a or at least 6a driver in it. But haven’t taken this apart yet to see what diameter the driver is.

Thanks if you know.

Not sure of driver diameter - wasn't in my notes. Uhhh - Simon's drivers won't work with this light - his drivers are for power switch lights, not e-switch lights, unless you have some way of converting it.

After reading the posts more thoroughly, I'm not sure why no one is saying this, but in any color other than green: Don't Buy This Light, unless you can control max amps via batteries or adding resistance, know what the LED can and cannot take. Another words, Don't Buy This Light unless you know what you are doing and getting.

I was fortunate to order one in green, so it works well with high amps.

The driver is completely wrong to use across all LED colors. These NM1 color LED's all have their own optimum amp range, and this driver could care less about that. If it maxed at the lowest common denominator, at least you could say they did the best with what they got, but from all these posts it sounds like most colors, including white, are over powered depending on the cell of course.

We know the white does best in the 4.5 to 5.0 amp range, so if you measure more, it's wasting power, losing output.

Astrolux/Mateminco didn't think this one out. freeme should be aware of these shortcomings now. Let's please ask them to stop selling this until issues can be worked out. Dunno if it's possible for them to do so quickly, but this needs some re-thinking.

The SST-40 version is a great deal btw - no modding required .

Thanks for the info. Yea, I am in a weird predicament - I ordered green, red and blue LED versions from AX. I got the green, it is AWESOME, throws great.

But… Instead of getting my red and blue LED, i got White and Orange. Both the white and orange are VERY underwhelming and im really pi**ed considering these are my first orders from AX… Im trying to work it out with the seller, but the communication is painful. I am sending pictures and referencing order numbers and they are still not understanding the issue… Plus they only repsond once per day at 2 am so every message single exchange takes 1 day to complete… Im pretty close to just opening the dispute with AX to try and get my money back. I really just want my red and blue LED version…

Plus i ordered 3 different body colors for the different LED’s and all3 were wrong… just a SH**show…

Sorry for random venting, i know this isnt an AX forum, but my situation is now i have two lights, i paid for, that have two LED’s that essentially are crap in this light/driver…

Ok, did some further research and reverse engineering on this light - pulled the driver out. It's a classic FET+1, using a SIR800DP FET. So this is a high power driver. The max amps/power may be restricted in firmware, but certainly this explains the lack of regulation, and testing results on different batteries.

The processor (MCU) is made by Nuvoton, based on the 8051 (old MCU), but with all the modern advances of on board memory, PWM's, timers, etc. It's got an 18 KB space for code which is good - our typical Atmel Attiny85 has 8 KB, so this is more than double the space. Listing/link to spec sheet here: https://www.digikey.com/en/products/detail/nuvoton-technology-corporation-of-america/N76E003AQ20/8747840

So, guess they copied our FET+1 design but went with a cheaper, unknown to us, MCU, without source code :FACEPALM:

Main pieces, easy to take apart (all good here):

Green NM1, secured nicely with screws (all good again):

Shows access to re-program the firmware via 5 pogo pin type of programmer, driver retaining ring removed (again all good):

Dual springs (good):

Need to de-solder the LED wires, than the driver can be pulled out:

Ok, the main contact board is where the driver circuit is, while the vertical board is strictly the USB-C charging. I've tested the charging on a USB-C wall charger and it works, so it's a real USB-C charger (also very good!).

On the driver board, a few parts look very familiar - classic FET+1 design, even the 4.7 ohm from Batt+ feeding the D1 diode, then to the MCU.

The 3AQ20 labeled 20 pin flat pack part is the MCU. The green wires looks to be the AUX LED in the switch, and blue wire for the switch.

It's not a bad design, fine for max amps, but would have to be carefully tweaked per NM1 color. Regulated amps of course would be much better.

For example, if I had a white NM1 version, I'd first experiment with batteries to find one that max's out at about 5 amps, or just less. If a 35E, GA, or MJ1 gets the results fine, if not, I'd replace the LED wires with longer and smaller wires, like 26 AWG and re-test.

It's not a light to just pull out of the box, slap in a battery, and go.

Can I get a code for one of these Freeme? Need a red one. I can live with less than perfect design at this price.

And thank you to everyone else that figured out all the flaws and how to work around them. I’ll throw in something low current and live with it. Or maybe just use a 30q and never use turbo.

Thank you Tom! If i cant get rid of my nm1 white, im going to maybe reflow culpm1 in it. thoughts? i know i will have to adjust the reflector at least.

I'm not 100% clear on all this, but the CULPM1 is what Hank lists as the W2.1, and does take higher currents. I wish I knew more about this driver - I'm not sure if it's limiting amps by either circuitry or firmware, but based on the amps I'm reading on a good cell, it seems like the amps is limited and the amps does depend on the battery. Therefore it's not regulated. In theory they could tweak the driver/firmware based on the LED as shipped, but doubt they are doing that because of these reported results (turning blue, turbo having no change or lower output, etc.)

Amp readings will make things much clearer. Even using the same driver, amps will vary based on the LED as well, because these different LED's have different Vf's.

I can't find any LED tests done on the CULPM1, so not sure what the peak amps are - real world (not spec'd), or what the Vf is, but these djozz tests are a good indicator that the Vf will be low and the peak amps rather high. I'd suspect this driver will be well short of peak, therefore safe to use at least.

In reviewing the CULPM1 specs, it's rated for 8 amps pulsed at 3.5V. I doubt this driver will get it to 8 amps, maybe, but doubtful.

Thank you for this input. The reason I thought maybe it would be an ok option was because of Simons new 8amp driver for the CULPM1 in his L21a convoy. I Thought you or someone else had mentioned maybe a 5 amp max for the ft03 nm1 driver, and considering that made me think of using a CULPM1. Before i saw your input i put in an order with Hank for some deep carry kr4 clips and also ordered a CULPM1 Bare led from him. So, either way in a few weeks I will be reflowing the CULPM1 in this ft03 nm1 white. I’ll let you know how that goes… thanks for all of your probing into this light. I don’t see too many experienced OG forum members tearing into these more “stock lights” like astrolux and Haikelite. It is very helpful for the new guys like me.

OG - that's me, Old Guy . Just trying to be neighborly, neighbor. You're just a little ways up on the north side.

Old guy, original G, tomatoe - tomahto.

And yes, i noticed that as well, my neighbor to the “south”. i actually visited your area for the first time last month (been in CT my whole life), beautiful place out there! Took a couple of ferry rides to get there! had a good time.

I am in, thx

Tom E-

I hate to ask so many questions, but did you happen to measure the diameter of the mcpcb?

Looks like the ax seller isn’t helping me, and I’m switching my orange cslnm1 out to red, gonna get the led on a mcbpcb from Simon, hopefully. Just not sure which size, I will tear apart eventually so no big deal if you didn’t, but figured I’d ask so I can order it.

Thanks again!

Hhmm, not in my notes. Not even sure if the screw holes are compatible to standard MCPCB's. It's probably 20 mm from the looks, but I'd have to check, hopefully this evening.

so am i correct in saying that OSRAM emitters are just pure throwers, no spill at all? cuz i was comparing this to a regular ft03 with sst40, and its almost the same amount of kcd. and the sst40 is already more throw less spill than my xhp. so the mini with osram might not be the same light to walk the dog with?

NM1's are all about throw, period. Forget-a-bout lumens, tint, CRI, above or below some line... -- throw. In a reflector light, of course there's spill but not much brightness, and the hot spot is intense, small and can go some distance.

hm…ok, sounds like a thicker laser basically…nice

Yea, we call it a pencil beam. But it's actually a pretty good match for this FT03 Mini with it's deep reflector. The spill area is narrower than most lights. For dog walking, depends. If you are out in some open country you may want to see what's goin on a 50-100 meters out, but if you want to light up an area in close, not a good match.

Dedicated thrower LED's like these have no domes, domes are for losers, uh I mean flooders. The XPL-HI, XHP35-HI, SBT90.2 are all thrower LED's. If we want to turn a SST-40 into a thrower, what do we do? We cut off that dang dome!

well i have a ft03 xhp50.2 for now, it does both, some flood, some throw, so i think this is more suitable for dog walking, but i do still want a thrower light. so between those and the osram nm1, which one is the best? what are the differences?

Well, it gets complicated. The OSRAM's have a wide variety now, even in white. There's W1, W2, W1.2, W2.2 (these tags are getting confusing...).

The SBT90.2 is relatively new and has high lumens (~5500 max) as well as excellent throw, decent tint even at ~5700K. It's expensive, around $45, can pull 25 amps, has a hugh hotspot, and can be driven by a simple driver (3V FET based) - no pencil beam. The XHP35-HI is a 12V LED, about 2000 lumens max, and available in an assortment of NW tints.

The XPL-HI has been around a while, lower output of ~1500 lumens max, but really like it's beam pattern in NW tints - they are milky white with no tint shift in the beam.

As far as max distance, the NM1 (W1) or newer W1.2/W2.2 (??) are the best, where the ".2" signifies 2nd generation.

ok, and iirc, w1 is pure throw, and w2 has a bit of spill, right?