Q8, PMS SEND TO THOSE WITH ISSUES BLF soda can light

BLF Special Edition Products
3334

Can you add me to the list if its not too late… Thanks

3335

Yes, it is the time of the year, before you know it you catch a cold, probably worse, better safe than sorry…

3336

Yeah Tom, you need a nice 18650 powered hand warmer :smiley:

Will update OP Wednesday.

3337

I would be really interested. I was looking for an SRK and got referred here.

How do Groupbuys work on BLF and what payment method would work?

I heard a lot of mixed messages about Groupbuys, that were in no way connected to BLF.

3338

Please add me to the list for 1

3339

For now it is keeping an interest list
We will provide info on how and when to actually order in this thread and I’ll send all on the list a PM (in groups of 10, yay looking forward on making 70+ groups with names separated by a comma :D)

3340

That sounds reasonable,
and I am definitely interested in 1.

3341

Got the prototype in my hands now. I do like the feel of it - like the balance. Dropped in some cells, but it's not behaving right - think the fuses might be set wrong. Hard to say what's goin on - working intermittently. Dbl-click works well to max, and it is bright for sure. LED's are a bit off center, as I thought maybe the pictures indicated.

It is a prototype, so I/we shouldn't make too many judgments at this point. More to go...

3342

Thanks for the update Tom.

3343

Sorry, but is that a software thing? Something that can be easily tweaked in firmware?

3344

Fuses are programmed separately from the firmware, but they define critical things the firmware needs to be in sync with, such as the clock rate, brown out detection configuration, etc. Not sure yet what's going on though. It's gotta be clock related - it's all fixable of course .

These are the fuse values I use, and we use this tool to make it easier to configure them: http://www.engbedded.com for ATtiny85

3345

I thought as much. I’ve never done much avr programming so I wasn’t sure. Thanks for the explanation.

3346

First Look

Here's some comparison with some common lights, and SRK style lights:

Alone:

Under the tailcap:

Contact plate on the driver - looks like nice brass:

Couldn't resist to get some #'s. So... It's impressive. Right about dead even with my home brew Q8 proto, built from a Securitylng 4X SRK clone.

On Samsung 30Q BT's fresh off the charger (not rested) @4.20V:

  • Lumens: 5,710 @start, 5,320 @30 secs
  • Throw: 46 kcd (429 meters), taken at 5m (may be higher at 10+ meters)

The Securitylng 4X SRK clone proto on same Samsung 30Q BT's @4.20V did:

  • Lumens: 5,627 @start, 5,447 @30 secs
  • Throw: 52 kcd (456 meters)

The 4X SRK clone had a UCLp lens and had bypasses on the springs. It appears the real Q8 proto has regular non-AR glass lens, and large springs, not doubled and not bypassed. The real proto has more of a drop in the first 30 secs, so not sure if it's voltage sag from the springs, or something else going on with heat. Haven't taken her apart yet to get a look at the MCPCB - that will tell us a lot more.

I would say the tint is in the 2 range, 2A or 2B - not the 3D we were asking for, but I'm assuming they are top binned at V6 or maybe V5 based on the performance, but that's hard for me to judge.

Dimensions:

  • 59.0 mm head
  • 50.0 mm battery tube
  • 52.0 mm tailcap
  • 135.1 mm height
3347

Very nice, can’t wait to see inside the head. Kinda odd that it dropped more then the SRK @ 30 seconds.

I do see they redid the driver, curious if it is even the same setup inside.

3348

It’s not a bad looking light, the numbers don’t seem too bad either especially since nothing is bypassed.

3349

I am in for a second. My first is on #125

3350

I like it a lot!

3351

Thanks so far Tom!

Interesting to see that what is discussed long and hard (the housing and switch) seems OK

But the reflector (thus also led centering) and sudden rework of driver does seem like troublesome now. They wanted to rush a sample so the reflector setup was not heavily discussed and well if they reworked the driver they have a lot of excellent BLF work to catch up on :wink:

We’ll get them there :smiley:

3352

Will the final product have bypassed springs?
I see in the OP specs double springs are mentioned, is that as effective/more effective than a bypass? Or are double springs for a different reason?

3353

Thanks Tom E

for now looks great especially the contact plate on the driver.