Emisar D4S review

RichH · 2020-01-01T03:01:05.000Z

SammysHP:

The blinking happens very early in the code. If it does not flash when screwing everything together, there is a high chance that the hardware has an issue (for example contact issues at the tailcap/threads/springs, loose cable, damaged component on the PCB (the microcontroller in this case)). Where did you order it? You can ask for warranty / replacement head. But first check if all contacts are clean and make a proper connection. Which battery do you use? I’m not sure if protected/button top batteries might cause issues because it might be too long. But it worked before, so I think the battery is fine.

Thanks for your replies. I’m good with checking checking contacts etc due to having had a few lights that need ultra clean threads and contacts at both ends. That’s as deep as I’ll go with it, I know nothing of the PCB or chipset. It’s a weird one, I was button pressing to show the different aux light levels and accidentally put it in momentary mode. Due to the Christmas thing I was a bit busy and didn’t have easy access to the online manual so I squished the button repeatedly. Then…nothing.

I wonder if I’ve put it in some sort of lockout, but tried the 6 presses and also know if the light is live it blinks a single flash when the tailcap screws tight onto the battery. Battery/cell is from a company here in the UK called Fogstar. They have a good rep, batch testing, educating, and helping keep idiots safe from high draw vape devices.

Bought the light direct from Hank at INTL, I’ll have to give him a shout. By the way, the blue D4SV2 with a steel bezel and the XPL-HI 5000k has a nice neutral beam and gives some good throw too. Mainly by projecting massive lumens, but it’s an impressive torch with just the right CRI for my use.

A small part of me wants the SST-20 5000k to compare, but that’s just me down the rabbit hole of flashaholism again. :

SammysHP · 2020-01-01T07:28:06.000Z

Can you give us some more details about the battery? Is it protected?

brightnorm · 2020-01-01T08:13:50.000Z

[quote=RichH]

SammysHP:

… By the way, the blue D4SV2 with a steel bezel and the XPL-HI 5000k has a nice neutral beam and gives some good throw too. Mainly by projecting massive lumens, but it’s an impressive torch with just the right CRI for my use.

Speaking of throw, My D4svn VN2 Has remarkable throw. Top floor 19 floor building from across the street brightly illuminated.

RichH · 2020-01-01T13:52:06.000Z

SammysHP:

Can you give us some more details about the battery? Is it protected?

I have two of these, pretty sure they’re unprotected.

Fogstar

Fogstar 26650 Battery

Buy Fogstar 26650 batteries here. All batteries are Tested | Compliant | Traceable | Quality Products | Order now - Fogstar UK.

They’ve always been fine in the D4S and both power the D4SV2 I bought myself for Christmas.

valera · 2020-01-07T18:04:24.000Z

[quote=valera]

[quote=RollerBoySE]

Agro:

Thanks.

Dear colleagues! Are there any diffusers for Emisar D4S or maybe some are suitable from others ?

Agro · 2020-01-07T18:48:11.000Z

Small Naturehike diffuser is a clear favourite of mine:
https://www.aliexpress.com/item/32974909430.html

Chatika_vas_Paus · 2020-01-08T20:53:52.000Z

valera:

Dear colleagues! Are there any diffusers for Emisar D4S or maybe some are suitable from others ?

Here is a short thread about it.

nick779 · 2020-04-20T13:20:40.000Z

Is level 65 similar to the current draw of the small D4, or the full current of all 3x 7135s?

Im attempting to estimate runtime and wasnt sure.

ToyKeeper · 2020-04-21T02:21:55.000Z

nick779:

Is level 65 similar to the current draw of the small D4, or the full current of all 3x 7135s?

Im attempting to estimate runtime and wasnt sure.

Looking at the ramp table for the D4S, level 65 is a value of 125/255 on the 3x7135 channel. That theoretically works out to about 515 mA if the chip has a linear response curve, but I don’t think it does. It’s probably higher than 350 mA, but the only way to know for sure is to measure it.

nick779 · 2020-04-23T10:48:21.000Z

Anyone by chance have a set of the small machine screws that align the AUX board and mcpcb and attach them to the mcpcb shelf in the host? I had a light that I bricked apart and apparently I misplaced these.

Edit: Richard at Mtn was kind enough to measure a few for me. Theyre Phillips Pan Head 2mm x 0.4mm x ~6mm machine screws.

I was able to order a few assorted lengths from an online hardware store.

lionheart_2281 · 2020-05-12T11:12:58.000Z

What’s the reset?
Just got a D4Sv2 and it seems to go straight to turbo with 1 press from off, or hold from off to stobe mode, what’s doing on?

hodor · 2020-05-12T11:34:41.000Z

Disconnect power, hold switch, reconnect power, wait 3 seconds or until light stops flashing, release switch.

lionheart_2281 · 2020-05-12T13:09:49.000Z

hodor:

Disconnect power, hold switch, reconnect power, wait 3 seconds or until light stops flashing, release switch.

Much thanks!

brightnorm · 2020-07-21T01:54:38.000Z

REVIVING this thread—-D4Sv2 FLASHER for walking at night

My goal was about 1.5 - 2 flashes per second at roughly 400 lumens. The slowest I could get the strobe was around 4 flashes per second at full power. Is there any way to slow it down and reduce lumens?

Brightnorm

Rayoui · 2020-07-21T01:56:22.000Z

You could use beacon mode and set it to one flash per second. It has adjustable brightness too.

brightnorm · 2020-07-21T02:12:57.000Z

IGNORE - Found it. Thanks (Too bad the speed isn’t adjustable)

Are the instructions handy or would I have to scroll through many posts?

ToyKeeper · 2020-07-21T16:37:18.000Z

brightnorm:

FLASHER for walking at night

My goal was about 1.5 - 2 flashes per second at roughly 400 lumens. The slowest I could get the strobe was around 4 flashes per second at full power. Is there any way to slow it down and reduce lumens?

Sorry, it doesn’t have anything quite like that. However, there are four things which might get close…

Tactical strobe at slowest speed: ~3 Hz and very bright
Party strobe at slowest speed: ~4 Hz and less bright
Beacon mode: ~1 Hz or slower, at whatever brightness you want
Bike flasher: ~1 Hz, at whatever brightness you want

The bike flasher mode is intended for high visibility at night, like walking or biking. Have you tried it?

brightnorm · 2020-07-21T09:10:19.000Z

Hi Toykeeper,

Since Bike flasher mode can’t go faster than 1Hz, Beacon mode seems to be the best. When you said 1Hz or faster, can you tell me how to speed it up? 2Hz-2.5Hz would be ideal.

Are you working on any brilliant projects these days?

Stay safe

ToyKeeper · 2020-07-21T16:38:27.000Z

brightnorm:

Beacon mode seems to be the best. When you said 1Hz or faster, can you tell me how to speed it up?

Sorry, that was supposed to say slower, not faster. 1 Hz is as fast as beacon can go.

brightnorm · 2020-07-22T09:40:12.000Z

No problem.