[Update]Wurkkos dual LEDs 21700 Headlamp design Photos/UI update~

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MoreLumens
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Good thing is that there is a lot of those rubber holders in AE and they wont cost much. My old Nitecore HC30’s holder has gotten loose so adjusting light wont work anymore. Gotta order few extras when sale starts.

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My personal observations concerning Wurkkos HD20:

 

User Interface

Unfortunately, Wurkkos did not fully adopt the UI that we originally agreed upon here on BLF. In some details it is noncompliant to the manual I created for this headlamp. 

Let me highlight the differences to the UI shown in the manual:

  1. Unlike stated in the manual, there is no mode memory for the selected brightness per LED when cycling through Flood > Spot > Flood+Spot. The corresponding LED(s) will always restart on Low mode. However, there is mode memory for the last-used setting when you turn OFF and ON again. That's not an actual problem but it may be worth improving with batch #2.
  2. The moonlight mode has a glitch in the first 5 seconds. When turning ON by pressing 2s it turns on in moonlight mode. When turning OFF and ON again within the next 5 seconds the light will still start again in moonlight mode, i.e. moonlight mode is temporarily part of mode memory (unlike intended). Normally, mode memory only works for Low-Medium-High, not for moonlight or turbo. Again, nothing to worry about but worth considering for improvement.
  3. Unlike stated in the manual, HD20 does not always use both LEDs for turbo mode. Instead, it uses the LED mode for turbo mode that was selected before. For instance, if you used spotlight only, a doubleclick will use turbo mode for the spotlight LED only. The other LED will remain off. The same applies to direct access to turbo mode from OFF. In order to have both LEDs activated for turbo mode you need to select Spot+Flood mode before. This is the most significant difference to what's stated in the manual. I do not know if it should be kept this way as Wurkkos always wanted to use both LEDs for turbo, regardless where you start it from. To my surprise, all strobe modes work exactly as stated in the manual, i.e. HD20 always uses both LEDs at the same time, regardless of the selected LED mode.
  4. Unlike stated in the manual, the LED mode can also be cycled by a tripleclick, not only by 2H (click, click+hold). This is actually quite useful but it's not an official part of the UI.
  5. There’s a nasty random glitch in the firmware when using both LEDs (Spot+Flood). Sometimes when cycling through Low-Medium-High the LEDs are out of sync. That means brightness of each LED will not cycle upwards in parallel but randomly between Low, Medium or High. I did not find out yet how to reproduce this glitch - it just happens every once in while.

To be fair, none of these noncompliances are serious or render the UI unusable. I will try to post a separate, rectified manual for batch #1 lights. You may want to exchange your original manual by the rectified one.

 

I made a short video about the general UI behaviour when cycling LED modes or brightness modes.

 

I also made a short video of the UI glitch in Spot+Flood mode. Another BLF member reported the similar glitch before.

 

Powerbank mode / Reverse charging

I tested this feature using an USB-C to Apple Lightning cable to charge my iPhone 6 Plus as well as a 100W USB-C type C-C cable to charge my Xiaomi Redmi Note 8T. The iPhone would not charge using the HD20 as power source, only asking once to unlock for using the "accessory" and then doing nothing anymore. The Android phone however was charged by HD20 (at slow charging speed). This observation underlines that there seems to be an encoding problem between the USB-C specifications and the (reverse-)charging protocol of HD20. Many smart chargers seem to be incompatible with HD20 when using type C-C cables, probably when asking for 9V, 12V or 20V output voltage. But there seems to be more to it and only closer inspection on Wurkkos's side can resolve this issue.

 

 

 

jp9mm
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Lux-Perpetua wrote:

Unlike stated in the manual, HD20 does not always use both LEDs for turbo mode. Instead, it uses the LED mode for turbo mode that was selected before. For instance, if you used spotlight only, a doubleclick will use turbo mode for the spotlight LED only. The other LED will remain off. The same applies to direct access to turbo mode from OFF. In order to have both LEDs activated for turbo mode you need to select Spot+Flood mode before. This is the most significant difference to what’s stated in the manual. I do not know if it should be kept this way as Wurkkos always wanted to use both LEDs for turbo, regardless where you start it from. To my surprise, all strobe modes work exactly as stated in the manual, i.e. HD20 always uses both LEDs at the same time, regardless of the selected LED mode.

This actually sounds like an improvement and i did suggest this in the UI planning.

SammysHP
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Lux-Perpetua wrote:
I also made a short video of the UI glitch in Spot+Flood mode. Another BLF member reported the similar glitch before.

That was probably me. Here’s my video:

There is also another bug regarding turbo. If you start from spot mode, turn off the flashlight and wait more than five seconds, it will enable both LEDs. Before five seconds it’s just the spot LED. This does not work with the flood LED.

Lux-Perpetua
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SammysHP wrote:
[...] There is also another bug regarding turbo. If you start from spot mode, turn off the flashlight and wait more than five seconds, it will enable both LEDs. Before five seconds it's just the spot LED. This does not work with the flood LED.

Yep, same with my sample. As soon as Wurkkos is available again, I will send them a summarized feedback.

Overload
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SammysHP wrote:
Lux-Perpetua wrote:
I also made a short video of the UI glitch in Spot+Flood mode. Another BLF member reported the similar glitch before.

That was probably me. Here’s my video:

There is also another bug regarding turbo. If you start from spot mode, turn off the flashlight and wait more than five seconds, it will enable both LEDs. Before five seconds it’s just the spot LED. This does not work with the flood LED.

Strange, I don’t have those problems with mine, done several tests.
Looks like not all of the lights have these bugs

Fescron
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jp9mm wrote:
Lux-Perpetua wrote:

Unlike stated in the manual, HD20 does not always use both LEDs for turbo mode. Instead, it uses the LED mode for turbo mode that was selected before. For instance, if you used spotlight only, a doubleclick will use turbo mode for the spotlight LED only. The other LED will remain off. The same applies to direct access to turbo mode from OFF. In order to have both LEDs activated for turbo mode you need to select Spot+Flood mode before. This is the most significant difference to what’s stated in the manual. I do not know if it should be kept this way as Wurkkos always wanted to use both LEDs for turbo, regardless where you start it from. To my surprise, all strobe modes work exactly as stated in the manual, i.e. HD20 always uses both LEDs at the same time, regardless of the selected LED mode.

This actually sounds like an improvement and i did suggest this in the UI planning.

Yeah I also like this “feature!

Fescron
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Lux-Perpetua wrote:
(…)
  1. Unlike stated in the manual, there is no mode memory for the selected brightness per LED when cycling through Flood > Spot > Flood+Spot. The corresponding LED will always restart on Low mode. However, there is mode memory for the last-used setting when you turn OFF and ON again. That’s not an actual problem but it may be worth improving with batch #2.
(…)

Ah yes memory mode throuhout flood/spot could be useful IMO, I’d use spot on low – flood on medium for example.

Lux-Perpetua wrote:
(…)
  1. The moonlight mode has a glitch in the first 5 seconds. When turning ON by pressing 2s it turns on in moonlight mode. When turning OFF and ON again within the next 5 seconds the light will still start again in moonlight mode, i.e. moonlight mode is temporarily part of mode memory (unlike intended). Normally, mode memory only works for Low-Medium-High, not for moonlight or turbo. Again, nothing to worry about but worth considering for improvement.
(…)

I suppose one could also call this is a “feature”? Suppose you turn the moonlight mode off but you need it again fast, just one click away instead of holding…

Lux-Perpetua wrote:
(…)
  1. Unlike stated in the manual, HD20 does not always use both LEDs for turbo mode. Instead, it uses the LED mode for turbo mode that was selected before. For instance, if you used spotlight only, a doubleclick will use turbo mode for the spotlight LED only. The other LED will remain off. The same applies to direct access to turbo mode from OFF. In order to have both LEDs activated for turbo mode you need to select Spot+Flood mode before. This is the most significant difference to what’s stated in the manual. I do not know if it should be kept this way as Wurkkos always wanted to use both LEDs for turbo, regardless where you start it from. To my surprise, all strobe modes work exactly as stated in the manual, i.e. HD20 always uses both LEDs at the same time, regardless of the selected LED mode.
(…)

Yeah this clould also be called a “feature” I think, I sometimes like to put only flood/throw on turbo. However it’s always nice to have quick access to real turbo with both LED’s, so I’m not entirely sure what I like more…

Lux-Perpetua wrote:
(…)
  1. Unlike stated in the manual, the LED mode can also be cycled by a tripleclick, not only by 2H (click, click+hold). This is actually quite useful but it’s not an official part of the UI.
  2. (…)

I really like this “feature”! I almost never use 2H, 3 short clicks is way faster!

Lux-Perpetua wrote:
(…)
  1. There’s a nasty random glitch in the firmware when using both LEDs (Spot+Flood). Sometimes when cycling through Low-Medium-High the LEDs are out of sync. That means brightness of each LED will not cycle upwards in parallel but randomly between Low, Medium or High. I did not find out yet how to reproduce this glitch – it just happens every once in while.
(…)

Ah yes I noticed this when testing it but thought it was related to the memory modes, I haven’t seen it happen recently though…

Lux-Perpetua wrote:
(…) I tested this feature using an USB-C to Apple Lightning cable to charge my iPhone 6 Plus as well as a 100W USB-C type C-C cable to charge my Xiaomi Redmi Note 8T. The iPhone would not charge using the HD20 as power source, only asking once to unlock for using the “accessory” and then doing nothing anymore. The Android phone however was charged by HD20 (at slow charging speed). This observation underlines that there seems to be an encoding problem between the USB-C specifications and the (reverse-)charging protocol of HD20. Many smart chargers seem to be incompatible with HD20 when using type C-C cables, probably when asking for 9V, 12V or 20V output voltage. But there seems to be more to it and only closer inspection on Wurkkos’s side can resolve this issue. (…)

Huh my android phone seems to charge fast and I can also charge the HD20 with a Baseus 65W charger and a Type C – Type C cable…

Overload
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That’s weird, mine does some strange things when using 18650 VTC6
I always used 21700 LG 10A before…
Maybe because of the higher currents of the 18650 the lights acts different?
What type of batteries do you guys use?

SammysHP
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What strange things?

Btw just hooked up the scope. PWM on all levels except turbo, 20 kHz (!) and when both LEDs are active, the spot LED turns on 15 μs after the flood LED. And the strobe mode makes some nasty audible noise from the switching.

Sadly I don’t have a clamp meter here at the moment to measure the current.

rdhood
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Mine definitely has a couple of these “bugs”. It still has important long hold-click to moon, double click to turbo. Its only in the trying to operate the leds independently I get strangeness.

My headband is useless. The two loops are too thin. One of loops came damaged and it means that I can’t use it as a headlamp.

The 5000k beams are absolutely beautiful. Independently and together they have no green or yellow tint, and look great.

I could not get mine to charge c-c, could not get the power bank to work, though I am still testing

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SammysHP wrote:
What strange things?

Both LEDs went on(clicking from off) while last time only 1 led was on and I didn’t came from turbo as others did.

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rdhood wrote:
... I could not get mine to charge c-c, could not get the power bank to work, though I am still testing

For my chargers with USB-C ports that would not charge the Wurkkos HD20 with a USB-C to USB-C cable, I used the following USB-C to USB-A adapter with the adapter plugged into the USB-C port of the charger and a cable with USB-A to USB-C connectors plugged into the adapter and the Wurkkos HD20. The adapter is uni-direction and the adapter's USB-C connector must be plugged into the USB-C port supplying the charge to work correctly.

This is the adapter I used:

https://www.amazon.com/Anker-Adapter-Converts-Technology-Compatible/dp/B...

I was hoping the same adapter plugged into the USB-C port of the Wurkkos HD20 and cables with a USB-A connector on the adapter end would allow me to successfully charge devices using the HD20 as a power bank when cables with USB-C to USB-C connectors or cables with USB-C to Apple Lightning connectors would not work.

However the Wurkkos HD20 USB-C port is not working very well for me as a power bank with either method.

I have not been able to charge any of my devices with Apple Lightning ports using a USB-C to Apple Lightning cable or with the adapter plugged into the HD20 and a USB-A to Apple Lightning cable. I have been able to charge a few but not all of my devices with USB-C ports with either just a USB-C to USB-C cable or by sometimes needing to use the adapter plugged into the HD20 and a USB-A to USB-C cable. I can charge all of my devices with Micro-USB ports using the adapter plugged into the HD20 and a USB-A to Micro USB cable.

How many flashlights does a "real man" need?

None, real men are not afraid of the dark.

river345
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I got my Wurkkos HD20. I was disappointed that neither my Pixel3 nor my Moto G6 can be charged using the HD20 as a powerbank. The main reason I brought this light was for this feature. The Pixel and Moto G6 are pretty run-of-the-mill phones in the US – covering high end to mid-range/low-range smart phone. How well is this powerbank feature really working? What percentage of USB-C phones is it really compatible with?

Edit: roostre, thanks for the input. Is there some trick to using an adapter to make USB_C to USB_C work? It’s probably missing the resistor that makes USB-C act like legacy USB device and just use 5V.

It’d be nice to have Wurkkos comment on this issue. It’s seeming like this does not work for most phones, and the claim of using it as a powerbank isn’t really living up to expectations.

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river345 wrote:
... Is there some trick to using an adapter to make USB_C to USB_C work? It's probably missing the resistor that makes USB-C act like legacy USB device and just use 5V...

I do not understand the electronics enough to know why some devices work and some do not.

I just hope I do not destroy any of my devices testing which ones do and do not work.

How many flashlights does a "real man" need?

None, real men are not afraid of the dark.

Fescron
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river345 wrote:
(…) Edit: roostre, thanks for the input. Is there some trick to using an adapter to make USB_C to USB_C work? It’s probably missing the resistor that makes USB-C act like legacy USB device and just use 5V. (…)

I’m thinking of making a Type C – Type C adapter like this by modifying some Type C – Micro USB and Micro USB – Type C dongles and swapping some components around. This should fix all lights with weird type c – c cable charging behaviour I think Smile

https://imgur.com/a/TOOBzwt

Zia
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Intrested in 3 where can i get
Coupons or i have to wait for group buy?
Thank you

Zee

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I have not had any chance to talk to Wurkkos yet. However, I took the liberty to do some editing of the manual in order to reflect the actual UI that Wurkkos has implemented into HD20. The revised parts are highlighted with red text on yellow background.

I have decided to not post a complete new official manual here before reconfirming with Wurkkos. Sorry again for any inconveniences you may have encountered by following the UI stated in the original manual. Sad

 

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After using the Sofirn IF25, I am envisioning (but not expecting) a user interface that incorporates and merges the best features from both the IF25 and the HD20, but in the long run I would prefer Anduril 2 and the ability to easily customize and update Anduril using the light's USB port. I would use the Anduril 2 improved Muggle mode when I lend a light out.

The Sofirn IF25 has both warm and cool LEDs (this is different from the Sofirn IF25A which only has one type of LED) and it is impressive how the IF25 can continuously ramp between the two types of LEDs blending them together seamlessly using a "click followed quickly by a hold" and can reverse the ramping direction when a "click followed quickly by a hold" is done again within 1.5 seconds.

If this feature from the interface used on the Sofirn IF25 were adapted to be used on the Wurkkos HD20 a "click followed quickly by a hold" could be used to continuously ramp and reverse ramp between the flood and spotlight LEDs blending them together seamlessly or choosing one or the other.

The IF25 allows the user to choose either stepped or ramped brightness level changes which would also be a nice improvement for the HD20.

I would have preferred the following behaviors on the IF25 compared to the stock features:

1) If the stepped mode had used "hold for changing brightness and click for off" instead of "click for changing brightness and hold for off" so that both the stepped and ramped brightness level modes behaved similarly.

2) If the ramping brightness levels changed more slowly while near the moonlight level to allow for more control of the brightness level selected when you stopped ramping.

3) If the "quadruple click" for changing between stepped and ramped brightness levels (while the light is on) and for changing between "electronically locked out" and "not locked out" did not need to be done quite so quickly that it sometimes takes me multiple attempts to successfully perform.

4) If while in electronic lockout a "hold" activated the moonlight brightness level and a "click followed quickly by a hold" activated a low brightness level that was higher than moonlight.

How many flashlights does a "real man" need?

None, real men are not afraid of the dark.

Josen for young
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Wonderful headlight!
Does anyone love a portable and practical penlight? I hope to find person-one test my light.

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I am seeing a lot of seasaw motion when I did my runtime graphs with both emitters on. Has anyone else seen similar results?
When either emitter is on solo, you get a nice linear non regulated curve.

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Almost expected. It’s Sofirn’s ATR (Advanced Thermal Regulation) that oscillates like crazy. First noticed it on the SP33 v3. Keep it cool and it will be fine.

On the other hand: If you use lower levels, you get a hell of runtime from this light, even with an inefficient PWM regulated direct-drive driver.

mbp
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Has anyone modded theirs yet? I want to swap the XP-L HD for SST-20 4000k 95CRI, but it seems like the bezel is glued. I can’t get it to budge at all. I’m only a novice modder, not sure where to go from there.

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mbp wrote:
Has anyone modded theirs yet? I want to swap the XP-L HD for SST-20 4000k 95CRI, but it seems like the bezel is glued. I can’t get it to budge at all. I’m only a novice modder, not sure where to go from there.

Good taste Smile SST-20 is one of the best choices for a thrower flashlight. It can not output too much, but tint-wise, it is the best for thrower flashlights.

Before the emitter choices were finalized, I highlighted LH351*C* for better throw (C has smaller light emitting surface than D), but they insisted on the Cree crap. And they managed to choose the worse out of two. They mentioned XP-L, and common sense would suggest usage of XP-L HI, if it is meant to be a thrower, and not XP-L HD. While XP-L HI is not high CRI, it is at least good regarding tint shift. XP-L HD is not only just same not high CRI, but also much worse with the tint shift within the beam, and they chose that Facepalm

My proposal for this headlamp was:
5000K LH351*C* for the thrower part of the headlamp
and
4000K or 5000K LH351*D* for the flooder part.

That would let both decent output, and a decent 90 CRI for the whole headlamp.

It is still not too late to make better decisions, I just hope, they will reconsider this.

mbp
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Also, powerbank function does NOT work with my Pixel 4 when using a C to C cable, but it DOES work when using a C to A cable with an A-to-C adapter.

river345
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mbp wrote:
Also, powerbank function does NOT work with my Pixel 4 when using a C to C cable, but it DOES work when using a C to A cable with an A-to-C adapter.

Hold the phone! So…you use a regular C-A cable (that you might use to charge your phone from a charger), and you…add this thing to adapt USB-A end to USB-C so it fits the USB-C port on the HD20?

https://www.amazon.com/Syntech-Adapter-Thunderbolt-Compatible-MacBook/dp...

mbp
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river345 wrote:
mbp wrote:
Also, powerbank function does NOT work with my Pixel 4 when using a C to C cable, but it DOES work when using a C to A cable with an A-to-C adapter.

Hold the phone! So…you use a regular C-A cable (that you might use to charge your phone from a charger), and you…add this thing to adapt USB-A end to USB-C so it fits the USB-C port on the HD20?

https://www.amazon.com/Syntech-Adapter-Thunderbolt-Compatible-MacBook/dp...

Correct, this worked for me. Specifically, I used the A to C adapter that came with my Pixel 4. Obviously, I can’t guarantee it will work for you.

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My Pixel 3a charges with the same kind of adaptor (so C-A-C but not C-C) but at well under 1A. Anyone got it to fast charge a phone?

https://davestechreviews.wordpress.com/ / Email: <my BLF username>@gmail.com

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It will output max 1.6 A, but if the phone detects an old-style adapter (like which is emulated with the C-A-C adapter) it might limit charging to less than 1 A.

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