Emisar D4S review

I’m glad to hear people like most of the new stuff. I haven’t gotten much feedback about the stepped ramp yet.

This is the first negative feedback I’ve heard about the instant moon feature. If you’d like to disable that, comment out this part of the code:

    // hold (initially): go to lowest level, but allow abort for regular click
    else if (event == EV_click1_press) {
        set_level(nearest_level(1));
        return MISCHIEF_MANAGED;
    }

So, everyone, what do you prefer?

  • A. Activate the lowest level immediately when the button is pressed. Provides a hint that “click” and “hold” do different things, but requires the user to time the button release without direct feedback. (RampingIOS V3, Anduril)
  • B. Don’t respond when the button is pressed. Takes longer to get any light, but makes moon timing easier. (RampingIOS V2, NarsilM)

Basically, what do you prefer for step 1 here?

  1. At button press…
    • A. … turn on at the lowest level.
    • B. … do nothing. Stay off.
  2. If user releases button quickly, go to memorized level.
  3. If user holds the button for 0.4s, lock in the lowest level. User can release the button at this point to stay at the lowest level, or keep holding to ramp up.

Hello!

Happily, just pulled the trigger on 2 D4S, grey 219C and Green XPL HI 5000K NW from MTN.

I was considering the XPG2 5700K version, but budgetary limits kick in. Would anyone help describe the differences between the XPL HI NW and the XPG2 S4 2B: tint artifacts, throw and output differences, runtime?

Any and all opinions and recommendations are welcome, as I am a long time CW bias recently converted to NW and high CRI, seeking the knowledge of others with experience.

Also, decided on the Shockli 5500 mAh cells, any other recommendations?

Many thanks in advance for your input !

Shockli is the best 26650 I can find…

I have no D4S, but from the reading I tend to B.

Is there a way to calculate lumen for the stepped ramp?
With the known max output, no. of steps, steps for top and bottom ceiling?
I think of a spreadsheet, you type the values in and get the lumens for each step.

Ish.

It’s hard to do because of how different LEDs have different lumen levels, and in the FET modes, it also depends a lot on battery type and voltage.

Aside from that though, basically you’d have to look up the PWM values from the firmware’s ramp table, calculate the power level, then look up that power level on an emitter test graph.

Or try the bin/level_calc.py tool, which produces a relatively naive estimate of how many lumens it expects. These numbers may not match actual measurements though, because it doesn’t know the emitter’s response curve and may have been given intentionally wrong values in order to force the graph into a particular shape. Like, for the D4S, I told the calculator the lowest level was 11.2 lm and the highest was 4000 lm, and that it should use a ninth-root curve shape, because this got the values to line up how I wanted. But in reality it’s more like 0.3 lm to 5000 lm.

Ish would be enough.

I meant per light. Not in general for all FSM lights

Fw3a and D4S
As battery a 30Q.
Data for discharge from HKJ.

Hm, it sounds already complicated.

how about the black Basen with gold writing…it has 60a pulse

I have an authentic basen 5000mah with 50/60a pulse. there’s also the basen 4500mah with 40/60a pulse. have you checked those? I don’t have your set up to check the specs in the light itself. I almost bought the 4500 but it doesn’t have Basen written 4 times on the top of the battery like my other one does

Where can you purchase basen 26650?

Stepped ramp modes for xpl hi 5000k. 4, 34, 110, 246, 481, 1016, 1906 lumen… number will depends on the battery… atleast we get an idea…

Awesome…thanks for that…I have the same emitters.

What happens if change the stepped ramps to like just 2 steps? Does it just split the output in half?

I dont know how to do that… i have 7 modes in stepped, plus turbo…

At first I blinded myself a few times with this feature as well. And I couldn’t figure out what I was doing, or doing wrong anyway.

But after figuring it out, I’m happy with the way it functions. I do have to click and hold longer than expected, but there’s sufficient delaying before ramping up off moon to land in that I’m no longer bothered by it.

I’m still not ever sure what I’m going to get for a double click from off - last used mode, some random mode, or turbo. I’m aiming for turbo, but I’m not sure I always get it. And speaking of double click, the thermal reduction is so smooth you don’t notice it, so if you double click to turbo, and the light backs off a smidgen due to throttling, and you double click again, basically nothing happens cause you go back to turbo.

Since I just ordered my green D4S from Richard yesterday and I don’t actually have one yet, I built another one. This time in solid copper.

I made a Te/Cu head surrounding the Noctigon 33mm Quad MCPCB with Angie optic and mated it to the full copper body of an 18650 Sinner light. Not having my springs yet from Blue, I’m making do with the “measely” 5685 lumens out the front provided by an Sony VTC5A 18650. :wink: (output courtesy of 4 Samsung LH351D 5000K 80 CRI emitters)

Hank is really on a roll, for sure!

From L to R: Fireflies ROT66, D4s, DQG Tiny 26650 3th & Haikelite SC26 (26350 tube).

Since the floor, ceiling, and number of steps can be whatever you want, it spaces the middle modes evenly on a visually-linear scale. Or as close as it can get, at least, from the 150 available levels.

With just 2 steps, you’ll get just the floor and the ceiling. Nothing between. Modes are low, high, and maybe turbo.

I say “maybe turbo” because it depends on where the ceiling is configured. If the ceiling is set to 150 (one click), there is no separate turbo.

With 3 steps, it’ll be floor, ceiling, and halfway between on the ramp. So it’d do low, med, high, and maybe turbo.

Or to set it up for steps of 25, 50, 75, 100, 125, and 150… Do 25 clicks for floor, 26 clicks for ceiling, and 5 steps. Five regular output levels plus turbo.

If you tell it to use just 1 step, it’ll get a little confused and act like you configured it for 2 steps instead. But you can still make it a one-mode light by setting the floor and ceiling to the same number, I think. Unless it divides by zero. That’s a possibility. Probably should have tested that. :slight_smile:

For use as a 1-mode light, I’d recommend just using momentary/tactical mode.

I meant in post 493, the middle light. In reference to the basen, someone gave it to me but the ones I’ve been seeing don’t seem legit. Liion wholesalers has the 4500mah basen in stock

Thanks for sharing these figures. I am probably going to draw fire from saying this. TBH, I am a bit underwhelmed and disappointed that the lumen outputs will drop below 1000 lumens in less than 2 minute? Is this behavior due to timed stepdown? Since this flashlight has more mass compared to the D4, which should help it to dissipate heat better, I was hoping it should be able to output half the max lumens for sustained period.

Are the figures similar for the other LEDs: XP-G2 S4 and XP-L HI ?