TK's Emisar D4V2 review

Draw a dark circle on the white paper, I think that would help you to ignite a flame.

Does anybody know the o-ring size for the D4v2? Thanks

Don’t know if it was covered earlier in the thread, but is it possible to alter the Anduril source to change the colors of the battery status aux leds? Like change it from the stock blue/green/red to green/yellow/red or green/blue/red, for instance?

could someone please explain how the battery status aux LEDs work? Thanks.

It is a mode you select. The mode will show blue, green or red depending on the battery voltage. The updated UI graphic shows how to select it. When you are cycling through the different aux color/modes there is the slow cycling rainbow and the fast cycling rainbow. The fast cycling rainbow is the battery voltage indication mode. When you finish selecting the mode it will then show one of the three colors.

While I am sure it is possible to do, TK hasn’t released all of the source code files for this model yet (someone correct me if I am wrong).

Just received my D4v2 in SST-20 3000K and wow, it’s a very nice light.

Unfortunately I have found a problem with it:

When I click or click+hold the button from off the flashlight sometimes (maybe 1 in 40 clicks) does not turn on - nothing happens.
The click from the button sounds and feels normal when this happens so I don’t think it is a problem with the switch itself, because it ONLY
happens when I try to turn on the flashlight but never when changing modes or turning it off.

It took me one or two days to notice this problem because it doesn’t happen very often and I wasn’t sure if I made a mistake when playing
with the light and learning the Anduril UI.
But when I picked up the light from my desk and tried to click it on and nothing happened it became clear that something was wrong.

I am using a Sony VTC6 18650. I also cleaned all electrical contacts, this didn’t help.

@ToyKeeper
Do you think this could be software issue? I just found this bug report Bug #1803918 “fsm: sleep ticks interfere with button presses?” : Bugs : Flashlight Firmware Repository which seems to describe a similar problem. I am using the Aux LEDs as battery indicator, though.

Read this post regarding the issue.
https://budgetlightforum.com/t/-/47204/814

The microcontroller wakes up approximately every 30 seconds to measure voltage, and it will not respond to input for a very short period of time.

Please add info about the lens:

~25.64mm x 1.5mm AR coated

Is this bug only there because of the aux leds and them needing LVP? And does this also occur if you turn the aux leds off?

I switched to a static Aux LED colour (green) and it still happens.

It is for LVP so the aux LEDs do not drain the battery below a safe level. It will happen no matter what mode there are in, probably when they are off also. However I have not reviewed the code so I am not sure how TK programmed the feature.

Thanks for the reply Mark.

Well, I really hope this can be fixed. A flashlight that doesn't turn on 100% of the time when clicked is not reliable IMHO. :-/

Changes to the code can definitely fix the issue. If it bothers you it is possible to disable the feature in code and reflash the firmware. Once TK releases the code anyway. I have had it happen once or twice but to me it isn’t bothersome, but I can understand where you are coming from.

Could this be why sometimes when ramping up in muggle mode the ramp goes for a bit and restarts from the floor? It has happened on every single Anduril light I’ve owned or used.

ah crap so no UCL lens for this light. Do you know of any other similar performing lens that do not bump the tint towards green?

When I tried to use my new D4v2 for the very first time it wouldn’t turn on, too. I clicked the switch again and again without any success. Then I unscrewed the battery tube and assembled everything again. Afterwards it ran like a charm without any problems. So, maybe this was the same situation as reported some posts above?

Is the D4v2 the first Emisar with this behaviour ? (sometimes MCU is ‘busy’ checking voltage and does not respond to click)

Yes, older lights do not have LVP for aux LEDs. TK corrected me below.

TK, the sophistication you’ve programmed into this V2 is exceptional! Getting very excited for the arrival of a light on a level I haven’t been in quite some time… almost funny this can happen after all the lights I’ve had come in here!

The free mosquito repellant modes are icing on the cake! :smiley: Thank you for the extreme effort you put in here, once again…

I ordered a plain mineral glass lens from a watch repair site (esslinger.com, never bought from here so we’ll see)