TK's Emisar D4 review

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khas
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I assume you are going to buy from Mountain Electronics LLC ? I am sure he can make one for you, either reflow on the Noctigon MCPCB or on his own MTN Quad MCPCB, try and send him a PM he is RMM on this forum.

Sledgestone
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Tjohn wrote:
djozz wrote:
The 219B will work but may not really like the heat that this light produces. The Vf is just as low as the 219C so it draws just as much current (15+amps), and with lots of extra heat stress because of the small host. I’d say 219C is the safer bet.
Words of Wisdom… …..within a relatively short period of tests with my experimental D4 (with Nichia 219b sw40 9050 – 93 CRI) one of the leads to the stock MCPCB easily managed to relieve itself.

I don’t think that the 219b has anything to do with that. Even my XP-G2 5D did the exact same thing.

djozz
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Sledgestone wrote:
Tjohn wrote:
djozz wrote:
The 219B will work but may not really like the heat that this light produces. The Vf is just as low as the 219C so it draws just as much current (15+amps), and with lots of extra heat stress because of the small host. I’d say 219C is the safer bet.
Words of Wisdom… …..within a relatively short period of tests with my experimental D4 (with Nichia 219b sw40 9050 – 93 CRI) one of the leads to the stock MCPCB easily managed to relieve itself.

I don’t think that the 219b has anything to do with that. Even my XP-G2 5D did the exact same thing.


Yes, the 219B makes exact the same amount of heat as the 219C, so the ‘ unsoldering capability’ should not be different.
The difference is that at 4A per led, the 219C is still quite happy (max is at 6.5A) while the 219B is right at its maximum output, and this is measured with the led extremely well heatsinked, which is not happening in the small D4.

Quite worrying btw that you guys managed to get the leads unsoldered. You did nothing to circumvent the thermal management when this happened?

khas
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djozz wrote:
You did nothing to circumvent the thermal management when this happened?

Good question, I only managed to do that in a Convoy M1 quad before soldering the MCPCB to the spacer.

Sledgestone
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I don’t think there is anything to worry about, yet. I’m pretty sure that mine did that because I used too much heat when changing the mcpcb as the gold plating on the LED pad came loose in about 6 seconds after turn on.

noboneshotdog
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khas wrote:
I assume you are going to buy from Mountain Electronics LLC ? I am sure he can make one for you, either reflow on the Noctigon MCPCB or on his own MTN Quad MCPCB, try and send him a PM he is RMM on this forum.

Thanks for the heads up. I just emailed him.

Thier ain’t no bones in a hot dog. F. York

ven
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I love the 219b, the 4000k may be my No1 fav of the nichias. In fact most of my nichias are 219b’s , still i have a good few 219c’s in 4000k and 5000k flavours. The 219c 5000k in the D4 i really like. Sometimes its an advantage to have a tint free beam. The slightly warmer colour temps can change lighter colours, be them whites,creams etc . The 219c 5000k keeps colours accurate to my eyes, without any exaggeration/pop!(all subjective though).

At night, tired eyes, a little warmer beam is welcomed. But when i am wanting accurate colours, maybe cables or for pictures, the 219c comes out above the 219b 4000k for me personally. Again subjective, no rights or wrongs………………just depends on the application for my preference.

Smile
Tjohn
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djozz wrote:

Quite worrying btw that you guys managed to get the leads unsoldered. You did nothing to circumvent the thermal management when this happened?

What, me Worry?
-
If I was worried, I would have already taken RMM up on his offer to reflash the beta lot of presale V1 lights.
Since they were designed more like dragsters than street rods, I am thinking of keeping one of the two as stock.
The third D4 was purchased with the TK UI already installed.

No changes were made in thermal management, but both the stock 219c, and swapped 219b models are still V1 lights.
What we most likely have is a difference in hardness of solder, combined with quality of soldering iron/skills……LOL.

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Ah, those are V1 ones, before the thermal management was finetuned.

A geographical question: there is no piece of Brazil east of Greenland, right?

Tjohn
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djozz wrote:
Ah, those are V1 ones, before the thermal management was finetuned.

A geographical question: there is no piece of Brazil east of Greenland, right?

By a quirk of mapmaking, Greenland claims territory all the way from 11 degrees West out to 74 degrees West.
You could say Greenland extends to midway between Iceland and England.
-
I am located 35 degrees West,
which is East of almost all the Greenland population, and most of the land mass.

This part of Brazil was forgotten cattle grazing scrubland and fishing villages until the US Army needed a jump off point to fight Rommel during WWII.

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Thanks for the geography/history lesson Big Smile

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Mine finally came. It definitely took a postal journey, but it was worth it. UI on this thing is wicked, thanks Tom and TK Big Smile

I got 219C in green of course. Beam shape is only noticeable on smooth surfaces. Definitely gonna get a cloudy optic though. Might try dc fix before that just for kicks, I know it doesn’t do much to TIRs compared to reflectors. This thing is small! My E2L seems big now. Tint is also great, makes my other lights look yellow in comparison.

Flashaholics
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I’ve got both a 219c and 6500k on order, I’m going to compare them to my E14 II which I believe has similar turn on power. It’s recording nearly twice as much lumens as my DQG Tiny 3th!

My 4K Lumen Whore Reviews (MS18, X70, MS12, DX80, X80-GT, X45vn etc) - https://www.youtube.com/c/FLASHAHOLICS_GB

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KG_Tuning wrote:
I’ve got both a 219c and 6500k on order, I’m going to compare them to my E14 II which I believe has similar turn on power. It’s recording nearly twice as much lumens as my DQG Tiny 3th!

Excellent!!! Party

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I tried to EDC the D4 in my pocket (with keys) for a few days, and am afraid it is not going to stay there. Without lock-out it fires in the pocket about twice a day (some were to moon, some a lot higher), with lockout (manual or via UI) it takes fiddling before I can use it. I use my light multiple times a day so it is sort of important to me to switch it on in a second.

So for EDC I’m back to my E2L shorty, which was tough competition for the D4 anyway Smile (219BV1SW40R9080,BLFA6driver,slowdiscotail) which works great, it is a bit smaller, and a tail clicky is not just switching on by accident.

The D4 is going camping with me next week, for that it is a great allround light Smile

But perhaps for a future firmware of the D4 a thought or two can be dedicated to how to implement a quicker lockout sequence.

RollerBoySE
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KG_Tuning wrote:
I’m going to compare them to my E14 II which I believe has similar turn on power.

I have the E14 with 219C (stock version) and it’s nowhere near as bright as the D4 (with 219C).

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djozz wrote:
I tried to EDC the D4 in my pocket (with keys) for a few days, and am afraid it is not going to stay there. Without lock-out it fires in the pocket about twice a day (some were to moon, some a lot higher), with lockout (manual or via UI) it takes fiddling before I can use it.
I experienced “hot pants” even with my short S2+Triple EDCs several times. Afterwards I changed my driver firmwares to only cycle through safe modes (in terms of heat) – unless the user double-clicks the switch. The D4 needs something like this.

And it also needs a lanyard hole and space for protected batteries.

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Hi. I just ordered a couple of the D4’s. Received one of them already but it’s so small that I’m afraid that it’ll fall out of my pocket. Where can I buy pocket clips for them?

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djozz wrote:
perhaps for a future firmware of the D4 a thought or two can be dedicated to how to implement a quicker lockout sequence.

About that… and all other UI suggestions… I have a large part of the code foundation written and working already. I doubt it’ll be long before I have a “RampingIOS v3” firmware available which 1) implements all the changes which I think sound good, and 2) is dramatically easier to modify. It’s a complete from-scratch rewrite totally unlike anything else in the repository.

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Just received my second D4, a green in xp-g2 3d. I really like this tint. It’s ever so slightly warmer than the nichia – a nice pale white, still very neutral though.

My only complaint is that the groove for the pocket clip came with a big scratch and the lens had lots of dust underneath. It feels like this was used, maybe a returned unit, or poor qc. Beside the cosmetics the light functions fine. I can disassemble the head and clean the lens and the groove would’ve been scratched eventually, so I’m probably not going to bother with a refund or anything.

UserM4 wrote:
Where can I buy pocket clips for them?

The Convoy deep carry clips work, but beware that it might scratch the anodizing, at least it did on mine.
Any other clip that has a 3mm(max) tall collar with a 18-20mm diameter should work.

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Fuzzylogic wrote:

The Convoy deep carry clips work, but beware that it might scratch the anodizing, at least it did on mine.
Any other clip that has a 3mm(max) tall collar with a 18-20mm diameter should work.

Thanks. I don’t want to scratch it so soon lol. Did you measure the dimensions with a caliper? I have one at work but I’ll have to wait until Monday.

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I’d love a clip or two too, but I haven’t been very happy with any that I found yet. I may see about ordering some of those “205” style clips though, which seemed reasonably decent aside from not being deep enough.

I haven’t found anything at all which would work on the 18350 tubes, which is unfortunate since that’s the size I would most want to clip to things.

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Until I can find a clip, I’m just using a zip tie and a wrist strap lol.

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UserM4 wrote:
Until I can find a clip, I’m just using a zip tie and a wrist strap lol.

!{width:65%}http://i.imgur.com/Hy0TYWD.jpg!

excellent idea with the zip tie!

I couldn’t get this one to work:

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Big Smile

Sig P225? A-Zoom?

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It’s been in my backpack for several days. Got scratches in 3 places and a tiny dent in the tail cap. Maybe it’s just me, but I don’t think it will stay in a perfect condition for long in any pocket. And so I wouldn’t bother much about scratching it with a tail clip.
OTOH DQG Tiny 4th came with a clip and I scratched the light while removing it before the 1st use. That wasn’t nice. Especially that it’s still the only damage.

djozz, twist-lockout works well for me. Though the delay until it stops blinking is sometimes annoying.

TK, you’re great.

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ToyKeeper wrote:

About that… and all other UI suggestions… I have a large part of the code foundation written and working already. I doubt it’ll be long before I have a “RampingIOS v3” firmware available which 1) implements all the changes which I think sound good, and 2) is dramatically easier to modify. It’s a complete from-scratch rewrite totally unlike anything else in the repository.

I think this deserves repeating

(“It’s good that most people can’t remember their previous lives. Otherwise
things would be a lot more complicated than they already are.”
Ajaan Lee Dhammadharo)

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Man some shoebox tests show my FET driven E2L with triple XP-G2s isn’t quite as bright as I hoped, and that as the battery drains my quad 219Cs in the D4 rapidly become twice as bright.

I carried the D4 around tonight and this thing EATS batteries. Going near turbo is just silly, but I LOVE it. I was showing some friends how it works and they started joking, “and press the button this many times for the bat signal” to which I responded by showing them the bat check logo on the UI graphic. “So what do you have to do for it to play music to you?” Told them I hadn’t figured it out that far, but it might be possible.

Lastly, I just use the physical lockout for now. It’s fairly easy, but I did find myself fiddling a bit to twist the end cap on with one hand. I don’t like pocket clips at all so that’s moot for me, however, I will try that zip tie Wink

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will this driver alone be available ??

glide 1
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jack-bkk wrote:
will this driver alone be available ??

I believe there is mention of this a few pages back, MTN will have them available?

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