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Thread: #4 FOURSEVENS Quark Smart QSL !

  1. #751
    Flashaholic* Chauncey Gardiner's Avatar
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    Default Re: #4 FOURSEVENS Quark Smart QSL !

    The Rainbows are my favorite of the series. I just noticed an update is available for the Smarty's.

    I hope you guys have a great Thanksgiving.

    ~ Chance
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    Default Re: #4 FOURSEVENS Quark Smart QSL !

    I would love to pick up some of the lights they're clearancing but I'm just not a memory mode guy.

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    Default Re: #4 FOURSEVENS Quark Smart QSL !

    Anyone else find the hidden menu in the app?
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    Default Re: #4 FOURSEVENS Quark Smart QSL !

    Hidden menu? Which one is that?

    So far when using just a primary CR123 it has been doing good for the last day. No resets etc etc. Even used the app to see if the light was inside my pack. Kinda nice not having to root around to know it was there. Got another for my nephew as a Christmas gift. He liked the phone control of the flashlight. For 19.50 shipped why not. I still like my copper Mini II better as an EDC though have been getting more than 20 dollars worth of fun with the Smart.
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    Default Re: #4 FOURSEVENS Quark Smart QSL !


    This site is hosed............................
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    Default Re: #4 FOURSEVENS Quark Smart QSL !

    Testing out some more features. I wanted to test the Bluetooth as a leash for my survival kit and the light itself. Hypothetically it should work really good for that as the smart light can be set to notify the user if separated. In addition the light flashes as a pager/marker. It worked great testing inside the kitchen but what about 8 miles today through the woods.



    The canned survival situation. Stop to get a drink and something out of my pack.



    My daypack kit. We will be hiking into the night.



    The PSK.





    There is the Smart.

    Canned survival situation. The PSK slides off behind the log. I don't notice it when packing up........



    I made sure both were paired for the test. Walking away noticed the strobe going off first then my phone issues this alert with sound.



    It's hard to see in the photo (will show the night test in this post) but I could clearly see the strobe at distance from inside the kit. The strobe over time goes to high and finally low beacon mode.



    Figured this was the best thing ever. Granted there are GPS trackers but none which are also bright flashlights with a very very bright strobe marker. I verified the pairing, tossed the PSK into my pack moving on. Then I heard the alert and knew the game was afoot. Yup the connectivity isn't the same in an uncontrolled environment. The false alerts came one after another. I put the light in an outside mesh pack pocket and that helped a bit but still got false alarms. Tried different things and despite hopeful rest bits it would fail. Finally had some stability by putting the light in one front pocket and phone in another front pocket. The problem near as I could tell was the connectivity is stable in an unobstructed line but any real work conditions would trigger a false alarm. Worked great on the kitchen table or forest floor but put it in the wrong place on my person and it would fail. Then again with intermittent issues it can be hard to work out the true problem.

    Moving on to night. I put the PSK on the ground then walked away. The strobe fired first at about 20 feet then phone alert at maybe 40 feet. There was no missing that glowing/flashing PSK.



    Put it back in my pack...... then promptly got more false alarms. So reestablished the pairing to test the oh snap I dropped my light in the dark dank woods situation.



    At around 20 feet the woods turned into a disco, another 10-20 feet the phone alert triggered.



    Here is the problem. The real useful tool is the "notify when out of range" feature. But I find turning off this feature is necessary. The light will often reconnect so with this feature turned off you won't notice a problem. That's the problem. I am always fighting the technology to do something. Unless mistaken the smart features are why they needed a reset function but that function can disable the light during a battery change for 3 minutes. Also the reset puts you back into strobe land. One of the issue from the early days of muti mode LED lights was to properly hide the strobe mode. The smart quark takes in your face strobe to a new level. It is set to strobe as a default and during actual use it almost looks for a reason to default back to......strobe.

    The strobe was wonderful when testing the light's paging system in controlled situations. But it seems more often than not I was taking a strobing light out of my pack or pocket when the connection was mistakenly lost. Never been strobed more in my life, the 70's not withstanding. NOT having strobe on default is a strong recommendation however don't see how to change that. I did test the last seen function and it worked so that's something though sometimes if I didn't verify the paring the light wouldn't be paired and the info was not relevant to the situation. Often if the light is somehow used it would be connected but given all the unintentional disconnects and the need to shut down the notification system now sure I would not stake my life on it. Maybe more testing of this feature would help. I do think it can auto reconnect but sometimes it isn't connected for no obvious reason.



    Having fun testing the light but as an actual tool it seems to always be fighting me. I do really like the tail cap. I like the fact the side button glows but somehow it's too uncomfortable to use so employ the back button more. It just digs into my finger. Being stiff is ok to avoid accidental activation but the 4/7 logo shape and cold hands worked out badly for me. Didn't notice it as much till did some colder field testing. The back button was ok in the cold. Also my previous tests seems to indicate the battery testing function was ok however need to run down more batteries.
    Last edited by Woods Walker; 11-25-2017 at 01:50 AM.
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    Default Re: #4 FOURSEVENS Quark Smart QSL !

    Excellent field testing report, too bad it didn't work as it should/expected. I did a similar test around my house and property and had several dead spots but I chalked them up to a tri-band router, 900 Mhz, 2.4 Ghz and Dect 6 phones, several BT devices, living near a substation, etc.... You however had zero RF interference out in the wild so I think it confirms the limitation and or usefulness of certain features.

    LOL at the 70's strobe comment, I still have my Radio Shack strobe light from that era.
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    Default Re: #4 FOURSEVENS Quark Smart QSL !

    Quote Originally Posted by Beamhead View Post
    Excellent field testing report, too bad it didn't work as it should/expected. I did a similar test around my house and property and had several dead spots but I chalked them up to a tri-band router, 900 Mhz, 2.4 Ghz and Dect 6 phones, several BT devices, living near a substation, etc.... You however had zero RF interference out in the wild so I think it confirms the limitation and or usefulness of certain features.

    LOL at the 70's strobe comment, I still have my Radio Shack strobe light from that era.
    Do you really have 10k plus unread emails?
    Maybe more. LOL! I am thinking the "auto off" feature might correct the connectivity issues when not used over time for the last seen function. Though that won't help with intermittent connectivity for the notify when not connected. I think somekinda firmware update might fix the 3 minute bricking. I do find a fast battery change helped mitigate that but can't be 100% certain. Not sure what can be done about the lithium ion size issue beyond trying to back off the tail cap just right. I got plenty of Primary CR123 looking to be eaten anyways. Maybe NOT having strobe as a default from the manufacture might help with the Bee Gees issue. I actually lost my old Bluetooth trackers LOL! but don't remember having this much connectivity issues. I do remember them eating way too much power and somehow sucking my phone dry. This seems much better aka less Bluetooth power consumption but just going by observation

    On a side note picked up a Knight on sale. Hope it gets here soon. I didn't want to pay full price when they first came out. Couldn't understand the design thought behind believing a person needed 4 disco modes yet not a low mode to go along with the medium special modes. It made zero logic. I understood the 2 primary modes but not the rest. However for 37 bucks it was worth giving a try. Plus I like twisty two mode UIs.

    Really liking my Copper Mini 2. Have both the 1 and 2 AA Mini and they're great UL trail/EDC lights. My first copper light as tend to prefer Al over other options.
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    Default Re: #4 FOURSEVENS Quark Smart QSL !

    Quote Originally Posted by Woods Walker View Post
    ...... about 8 miles today through the woods.



    TheWalker, that's a great choice for your Smarty. I chose something a little less clever.

    I like being able to turn off unneeded modes.



    Having so many intermittent issues sure makes for a bumpy learning curve.

    ~ Cg
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    Buttrock Re: #4 FOURSEVENS Quark Smart QSL !

    Quote Originally Posted by Woods Walker View Post
    Not sure what can be done about the lithium ion size issue beyond trying to back off the tail cap just right. I got plenty of Primary CR123 looking to be eaten anyways...
    For me, having to use primaries is my main annoyance with the stock QSL configuration. I have a handful of lights that only work with primary CR123A -- Foursevens Atoms, Foursevens (old) Mini, and a defective Olight S10 Baton that won't work with 16340 for some reason -- and I really don't want another one of those.

    After my earlier experimentation, I came to the conclusion that a loosened tailcap is the cause of my QSL frequently resetting to factory defaults -- and I, too, dislike strobe being the default when the tailcap button is activated . So, I figured out an easy mod to make my QSL work properly with protected 16340s.

    Here is a teardown of the QSL tailcap:




    The tailcap plunger is anodized aluminum, and the pointy part is easily sanded down with 500 grit sandpaper on a rubber sheet:


    Obviously you have to be careful about removing too much, because it cannot be undone short of buying another tailcap assembly for $9. First pass I just went a tiny bit further than removing the anodizing, then smoothed with some 12,000 grit paper. I reassembled...



    ... and found that it worked with both primary and secondary cells, but the tailcap travel with secondaries was too small for my liking. So I took another pass, again being careful to only remove a little bit. After reassembling again, the light no longer worked with primaries, but secondary 'action' is much better. In the end, I'd guess that I removed about half of a millimeter of material from the plunger. The tolerances are very small. It didn't take long to do, just needed to be careful about reassembling/testing frequently. I'm much happier with the light now.



    The only downside is that I'll have to buy another tailcap if I want to use it with primary cells.

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    Default Re: #4 FOURSEVENS Quark Smart QSL !

    Well done, Ronnie! Thanks for sharing your experiment.

    You should frame that sandpaper and sell it to someone for a $1,000. People buy all kinds-a art these days.

    ~ Cg
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    Default Re: #4 FOURSEVENS Quark Smart QSL !

    That's nice work. It seems it's either one or the other. You mentioned the Atom. The Atom headlamp I got has a similar issue. Despite having the voltage range and guessing driver to handle lithium ion they don't work. Reminds me of 2007/08. Makers started to add lithium ion capability yet they never considered actually fitting them into the lights. So hit was hit or miss with miss being more often. Oddly 4/7 was early on this and offered solutions. After 10 years the batteries and chargers are better and with vaping etc etc people are more familiar with them aka no longer hidden inside stuff. Yet here I am talking about it at the tail end of 2017 as an issue (edit to add for me maybe not others). That said the Atom headlamp/flashlight is kinda nice. Reminds me of my ZL H50. Total flat beam but the Atom headlamp adjustments and position avoids glare. The low mode is nice. Two mode twisty UI! My only SS light.

    On a side note I used 4/7 CR123 primaries for the connectivity testing.
    Last edited by Woods Walker; 11-25-2017 at 04:11 PM.
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    Default Re: #4 FOURSEVENS Quark Smart QSL !

    Thanks guys. Hopefully that procedure will prove useful to others whoíd prefer not to use primaries. Ultimately the mechanism is pretty simple, albeit very dependent upon the combined battery and plunger length for comfortably pushing the e-switch located under the spring in the head. Now that itís working the way I like it, I might get another QSL while theyíre on sale... if only to have an alternate tail cap for primaries. Seems silly to buy just the tail cap for $9 while the whole light plus accessories is only $19.

    It occurs to me that building the pokey part of the plunger as a screw that threads into the rest of the plunger - with a small nut to lock it in place - would make the plunger length user-adjustable, and thereby and solve this problem.

    Woods Walker, I appreciate all the testing and documenting you did... itís too bad that the Bluetooth connection isnít reliable enough for critical applications. I donít know much about Bluetooth, but Iím thinking itís not the lightís fault per se... seems like the technology just doesnít measure up to the way weíd like to be applying it. Oh well, this is a pioneering effort on Davidís part, and perhaps in a few years it will be possible to do whatís being envisioned.

    For my part, having gone through a bunch of steps to figure out the (minor) issues with the light and the technology... Itís starting to grow on me. Iím most fond of the Tactical interface. I have the tailcap set to medium, and the side switch memorized low. When I need moonlight, I can long-press the side switch. The Ďinfiniteí ramping is pretty neat as well, especially since it appears to be accomplished without PWM. I also like that I can switch UIs by 5-clicking the side switch, should I want to move to Pro. I also like the battery meter function, following a triple-click of the side switch. So Iím pretty much using the light without the app... but it still has enough features to make it a worthwhile EDC.

    Oh, and speaking of the Atom headlamp... as someone who wears glasses, I *really* appreciate the lack of glare. I use a headlamp pretty much every day, but that ends up being my Zebralight since it runs well on eneloops. The Atom sits in my glove box... loaded with primaries, faithfully waiting for that nighttime flat tire to happen. I do take it camping sometimes, when I can justify burning some primaries, and I find it enjoyable to use. I also like the old Mini ML (+ diffuser film) in the 360 headband b/c itís so light weight. Iíd be curious to see how the new Mini mark II does in the headband ...

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    Default Re: #4 FOURSEVENS Quark Smart QSL !

    Mine fits both primary and secondary without issue. I will see if the other one I ordered is the same.
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    Default Re: #4 FOURSEVENS Quark Smart QSL !

    Quote Originally Posted by Beamhead View Post
    Mine fits both primary and secondary without issue.
    What make/model 16340 are you using?

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    Default Re: #4 FOURSEVENS Quark Smart QSL !

    Quote Originally Posted by ronniepudding View Post
    What make/model 16340 are you using?
    Being a primary cell user I am not up on the new numerology of cells, but I put an Olight rcr123 and an Aw rcr123 in.
    HTH
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    Default Re: #4 FOURSEVENS Quark Smart QSL !

    I tried a 4/7 550 protected 5C (my math says 2.75 amps max draw. Is that right?) and Fenix 700 mAh Protected. Both needed to back off the tail a bit to function. Ironically during the battery change/test I just did the light bricked for a reset. It's kinda dark in the room and needed to take my EDC, a 4/7 copper mini II out of my pocket to read the info on the batteries. I didn't want to wait 3 minutes. Proving once again the stupid flashlight was actually smarter..
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    Default Re: #4 FOURSEVENS Quark Smart QSL !

    Quote Originally Posted by Beamhead View Post
    Being a primary cell user I am not up on the new numerology of cells, but I put an Olight rcr123 and an Aw rcr123 in.
    HTH
    Thanks Beamhead, ó to be clear, you donít need to back off the tailcap when using RCR123?

    Iíve got a few Olight RCR123 (aka, 16340), and all three used up the available play, such that the light would stay on if the tailcap was tightened. Perhaps you ended up with one of the original tail caps?

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    Default Re: #4 FOURSEVENS Quark Smart QSL !

    Quote Originally Posted by ronniepudding View Post
    Thanks Beamhead, ó to be clear, you donít need to back off the tailcap when using RCR123?

    Iíve got a few Olight RCR123 (aka, 16340), and all three used up the available play, such that the light would stay on if the tailcap was tightened. Perhaps you ended up with one of the original tail caps?
    No issues at all, and I thought the original caps had issues with primary only?
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    Default Re: #4 FOURSEVENS Quark Smart QSL !

    Right, TMK the original tailcaps were shorter, and sometimes didnít work with primaries... but were better suited to longer secondaries. In any case, lucky you that your QSL works with both!

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    Default Re: #4 FOURSEVENS Quark Smart QSL !

    So we are back on the fly testing stuff. I really like jogging the dark rural dirt roads and streets. Had two dog chase me a bit proving once again a bright light is worthless against animal encounters. Being big and kinda sketchy is more intimidating to critters than any flashlight but that's another matter. Like the dark roads!!!



    I needed a control to work out what was going on with the connectivity issues in field conditions. On the table top all is fine but the real world things often don't work so smoothly. I setup the pack the same way.



    This time I put the phone in the PSK which goes into the pack.



    For a test Bluetooth device used these wireless earbuds. As luck would have it they hung very near the upper chest pocket I put my phone in during the Smart Quark field use Bluetooth testing.



    I put down just over 6 miles.



    The Bluetooth headset acted almost identical to the Smart Quark. It was obvious within the first 100 feet. Moving them both to the same body position which had a line of sight cleared up the issue just like it did with the Smart Quark. There was one notable difference between the ear buds and Smart Quark test. Both had the same problem but the headset never disconnected. The sound got spotty but never needed to reset it. The reason being if every time there was a weak or fast break in connection resulting in the need for a full reconnection the technology would be too problematic.

    My conclusion is the Smart Quark connectivity is like a married couple who at the first sign of trouble skips counselling. They immediately file for divorce then expedites the court case. The app is simply too fast in determining the device is truly separated and not just having intermittent connectivity issues due to every day life. So it gives too many notifications then disconnects which makes many aspects of the app too programmatic to employ. I bet there is a firmware or app fix for this as seen it in my cheap earbuds. I could be wrong but it seemed really really clear to me during the competitive testing. I am having way too much fun doing this. LOL! I will test increasing the time to deep sleep mode to see if that negates the auto disconnect which often happens over time even on the kitchen table. I bet it will resolve that issue for those who want to use the last known location feature. I think that issue was already addressed looking at the options on the app.
    Last edited by Woods Walker; 11-26-2017 at 09:43 PM.
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    Default Re: #4 FOURSEVENS Quark Smart QSL !

    Quote Originally Posted by Woods Walker View Post
    My conclusion is the Smart Quark connectivity is like a married couple who at the first sign of trouble skips counselling.... The app is simply too fast in determining the device is truly separated and not just having intermittent connectivity issues due to every day life.... I bet there is a firmware or app fix for this as seen it in my cheap earbuds. I could be wrong but it seemed really really clear to me during the competitive testing. I am having way too much fun doing this. LOL! I will test increasing the time to deep sleep mode to see if that negates the auto disconnect which often happens over time even on the kitchen table. I bet it will resolve that issue for those who want to use the last known location feature. I think that issue was already addressed looking at the options on the app.
    Thanks again Woods Walker for all your testing and experimentation

    I don't see any options re: "deep sleep mode" in the 4/7s app, or in my iPhone Bluetooth settings ... was that comment in reference to the headset you're using as a testing control, or is there indeed a way to modify the re-connect behavior of the QSL?

    Since I fixed the tailcap issues this past weekend, my QSL has behaved reliably, with no bricking or crashing incidents. (Again, I'm pretty sure the original problem was the loose tailcap causing a brief loss of electrical conductivity when pressing the tail plunger.) Yesterday I carried the light with me all day -- keeping the QSL in my front pocket, and my phone on my person as well -- and I didn't *notice* any disconnects (disconnect notifications were set to 'off'). At the end of the day, the app still showed the QSL with a green icon, instant access to the UI/mode settings, etc.

    However, I've found that when I separate the light and phone, they do not reconnect automatically... or at least not quickly enough to satisfy my impatience. I have to re-connect to the light via my phone's Bluetooth controls, and then it will reconnect to the app after turning on the light briefly. Not the end of the world, but I'm curious if that behavior matches others' experience, or if there's some setting I can change to improve BT connectivity performance. I'll admit that I'm a bit a of a Bluetooth noob, so it may be that I'm missing something obvious. :\

    A couple more curious observations...
    1) this morning I noticed that there was an *improvement* in BT reconnect performance. The behavior I described above is definitely an improvement over previous experiments, wherein even after the light/phone had been reconnected, I had to take off the tailcap briefly (to reset the light?) to get the app to see it again;
    2) previously I was unable to edit the name of the light in the 'Details' screen in the app (Device Name and all other fields were grayed out)... but this morning I tried again and was able to do that no problem (fields in the 'Details' screen are now hilighted bright green).

    I'm wondering what changed... perhaps it just took a while for a firmware update to get applied?

    Anywho, I'm using the phone today with disconnect notifications turned *on*, and will see how it performs during normal EDC.

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    Default Re: #4 FOURSEVENS Quark Smart QSL !

    The bricking normally (can but not always) happens when changing the batteries though once my light was unresponsive and I needed a reset. Hence why they needed a reset function which also can during a battery chance brick the light for 3 minutes. The connectivity can run good a day then out of the blue (tooth always looking for a good pun) act up. With intermittent issues it's hard for me to draw any conclusions. There is a function to control the sleep time and thinking maybe that will help with the occasional disconnect when not is use or moved.

    edit. The notification system becomes problematic is line of sight is broken even at very near range with the phone. It declares divorce too soon IMHO.
    Last edited by Woods Walker; 11-28-2017 at 09:42 AM.
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    Default Re: #4 FOURSEVENS Quark Smart QSL !

    Click the little blue clock in the middle of the battery level gauge and there is a Auto-off option which is set for 30 minutes.
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    Default Re: #4 FOURSEVENS Quark Smart QSL !

    Quote Originally Posted by Woods Walker View Post
    The bricking normally (can but not always) happens when changing the batteries though once my light was unresponsive and I needed a reset. Hence why they needed a reset function which also can during a battery chance brick the light for 3 minutes. The connectivity can run good a day then out of the blue (tooth always looking for a good pun) act up. With intermittent issues it's hard for me to draw any conclusions. There is a function to control the sleep time and thinking maybe that will help with the occasional disconnect when not is use or moved.

    edit. The notification system becomes problematic is line of sight is broken even at very near range with the phone. It declares divorce too soon IMHO.
    Since my post earlier this morning, my QSL has disconnected twice unexpectedly -- once briefly (while putting it in my pocket), and then it reconnected on its own just fine a few seconds later. The second time it disconnected while I was driving (some time during my ~25 minute commute), and I noticed it was no longer connected once I'd reached my destination. It would not reconnect on it's own, and it defaulted back to factory settings (strobing tailcap). I believe this is what's referred to as 'bricking'. I had to reconnect it to my phone's Bluetooth, take off the tailcap for a few seconds to make it reconnect to the Foursevens app, and then re-setup my preferences.

    Just now, I walked down the hall for ~30 seconds to make it disconnect (I did get an alert on my phone), and when I came back into the room it reconnected on it's own without a problem. As you said, intermittent issue, hard to draw any conclusions. Perhaps it's a function of how long it's disconnected? I'll do some more tests and report back if I come up with anything useful.

    Quote Originally Posted by Woods Walker View Post
    Click the little blue clock in the middle of the battery level gauge and there is a Auto-off option which is set for 30 minutes.
    I thought the 'Auto-off' function is for the the light to turn itself off when it's left on (i.e., producing lumens) for X amount of time. I didn't realize that feature/control had any impact on BT connectivity or the light going to sleep.

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    Default Re: #4 FOURSEVENS Quark Smart QSL !

    Bricking is when this flashlight becomes for all practical purposes a brick. It goes beyond just not being able to connect rather not being able to actually work. It can occasionally refuse to reconnect and become unresponsive but that's really another however I suspect related issue. The only cure is a reset by removing the battery/tail cap. The problem being when changing the battery it can also (intermittently) go into the 3 minute reset. This takes the flashlight totally off line making it a brick for 3 minutes. The flashlight doesn't know that you might just be changing the battery and not really requiring a reset. If I was a fly on the wall of the design team this would of come up as a fatal flaw. It violates the principal promise of a flashlight as a tool. Load batteries and get light immediately. Maybe they need to come with me on a night hike. It's dark out there. That said I have been able to change the battery fast and avoided the full 3 minute bricking. Sometimes it will just reset the UI and give me another disco event of strobe. Other times it will change the battery no problem. Here is the kicker.

    I think if you don't wait the full 3 minutes then attempt to put the battery inside the 3 minute timer runs again. Once before I worked that out It took around 15 minutes to get the light unbricked. But then again with intermittent issues my observations could be flawed. I do know it bricks. I do know the app and or hardware is too fast to declare the device separated. My comparative testing with other Bluetooth devices showed that to my satisfaction. It's so easy in real life to have an obstruction even at point blank range. Other devices I own worked past this issue so I suspect it's possible here as well. Till then the connectivity aspects are really not worth employing. Great on the kitchen table as if a glimpse of what might be possible. Maybe 4/7 will do an update fixing these issues?

    On a side note I rather like the infinite UI. Ramps a bit slow and sometimes moves a percent once set but really cool. Problem being the light will reset unintentionally for one reason or another making any custom adjustment null and void....again....and again.....
    The TK20. Yes it still rocks.

  27. #777
    Flashaholic* ronniepudding's Avatar
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    Default Re: #4 FOURSEVENS Quark Smart QSL !

    Quote Originally Posted by Woods Walker View Post
    Bricking is when this flashlight becomes for all practical purposes a brick. It goes beyond just not being able to connect rather not being able to actually work. It can occasionally refuse to reconnect and become unresponsive but that's really another however I suspect related issue. The only cure is a reset by removing the battery/tail cap.
    OK, thanks -- I have seen the light cease to function briefly, but it usually recovers pretty quickly once I remove & replace the tailcap again.

    In any case, I think it's pretty safe to say that the Bluetooth features are less than fully-baked. So I'm starting a new test/experiment. I've set the UI to Pro (with blinky modes disabled), and I've turned off the light's RF signal using 10 rapid clicks on the side switch. It is now completely disconnected, and it should stay that way. I'm going to see how long it goes before having an issue that erases my preferences/settings, or causes bricking. Perhaps this will help establish whether the trigger(s) for the more severe problem(s) is (are) related to Bluetooth connectivity.
    Last edited by ronniepudding; 11-28-2017 at 05:05 PM.

  28. #778
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    nbp's Avatar
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    Default Re: #4 FOURSEVENS Quark Smart QSL !

    Re: battery fitment issues, I have problems with tailcap activation with AWs as well as Battery Station primaries. I have never experienced such things with any light before - these are both common cells. This is even with the newer plunger installed. I don't know what cells were measured when this light was designed. I have to believe if the average person bought this light, put in a battery and it didn't work, they would have just sent it right back instead of figuring workarounds like us here. That's a huge fail.

  29. #779
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    Woods Walker's Avatar
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    Default Re: #4 FOURSEVENS Quark Smart QSL !

    Quote Originally Posted by ronniepudding View Post
    OK, thanks -- I have seen the light cease to function briefly, but it usually recovers pretty quickly once I remove & replace the tailcap again.

    In any case, I think it's pretty safe to say that the Bluetooth features are less than fully-baked. So I'm starting a new test/experiment. I've set the UI to Pro (with blinky modes disabled), and I've turned off the light's RF signal using 10 rapid clicks on the side switch. It is now completely disconnected, and it should stay that way. I'm going to see how long it goes before having an issue that erases my preferences/settings, or causes bricking. Perhaps this will help establish whether the trigger(s) for the more severe problem(s) is (are) related to Bluetooth connectivity.

    Try removing the battery then keep it out for a minute or two. As if you dropped the battery, had to look in your pocket for a new one or go into your pack. Maybe your hands are cold. Anything that would in real life resulting in a delay. Odds are it will brick.
    The TK20. Yes it still rocks.

  30. #780
    Flashaholic* Chauncey Gardiner's Avatar
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    Default Re: #4 FOURSEVENS Quark Smart QSL !

    Quote Originally Posted by nbp View Post
    Re: battery fitment issues, I have problems with tailcap activation with AWs as well as Battery Station primaries. I have never experienced such things with any light before - these are both common cells. This is even with the newer plunger installed. I don't know what cells were measured when this light was designed. I have to believe if the average person bought this light, put in a battery and it didn't work, they would have just sent it right back instead of figuring workarounds like us here. That's a huge fail.

    Some of us are willing to figure a workaround due to the greatly reduced purchase price. While necessity is the mother of invention, it also has a father.... being broke.

    ~ Cg
    Never point a flashlight at anything you don't intend to illuminate! Never buy a flashlight you have to make payments on.

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