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

Wow, that was super easy, so much more so than my D4.

Is there still a way to disable (turn off) the switch light? If not, no big deal, but just curious.

Yes. Try 7 clicks from off to rotate through button LED modes.

Or, in lockout, use 3 clicks.

great, thanks! 1 question, does the mode where the button LED “flickers” take more power because the Attiny 85 is on, or is this some sort of sleep mode still?

The beacon or heartbeat mode still uses less power, because it’s in a sleep mode. It just wakes periodically to change the LED state, then goes back to sleep. Internally, it has an event system which has events like “button press” or “clock tick” or “low voltage”. The blinking button mode is handled with a “sleep tick” event… the watchdog timer wakes up the controller, it generates an event, the event falls through the system, and then it goes back to sleep. It takes slightly more power than being completely asleep, but not much. It should still be significantly less than just leaving the button LED in high mode all the time.

I will read through more threads here but figured maybe if I just posted someone could point me in the right direction. I originally purchased 3 of these BLF Q8s from here. They were great for the first couple of months then the button switch light has now died on two of them. Is there any information as to what would need to be replaced or changed to get them working again? Thanks so much in advance. (I will get back to reading through these threads)
Neil

Is it possible the switch LED's just got accidentally disabled? Might want to do a factory reset on them...

Here's how to do it: https://budgetlightforum.com/t/-/39069/16504

You can get a replacement switch from the sofirn store on aliexpress - here is the link - click on the picture of the switch - they are $3.01

https://www.aliexpress.com/store/product/BLF-Q8-Accessories-lighted-switch-assembly-Copper-DTP-MCPCB-Reflector-for-Q8/2933049_32879434650.html?spm=a2g1y.12024536.productList_2692165.subject_15

You guys rock! I’ll check on lunch break!

//factory reset did not fix my issue… looks like she is dead jim… :frowning: on to ordering a new one. oh well gives me a reason to break it open and flash newer firmware as well.
Neil

Are you sure the factory reset worked, meaning it did actually do the reset? Think the earlier v1.0 firmware didn't support it, can't recall though. It's odd because I got a ton of lights with LED switches and haven't seen one failure, including some of my regular used modded EDC's I've used for 2-3+ years. Think I had couple Q8 users who said it failed and the reset fixed it.

Of course it's possible you had Q8's from a batch with suspect parts or quality issues. If you are comfortable with it, I'd check the switch PCB first before ordering a replacement.

The first 500 Q8’s (or was it the first 150?) had quality issues with the switch leds. The later batches had better quality switch led boards. Many people with a failed switch received a new switch-board at the time. But I’m not surprised if switch leds from the first 500 that did work, fail at some later point. So it is good that Sofirn sells the improved board.

But it is also possible that in some cases people claiming failing switch leds in fact had switched them off without knowing.

+1 - forgot there were quality issues in the early batch... Thanx djozz! I'm forgetting more than I remember, or that I forget - I forget which

Yes, I had 3 of the first batch. One switch had bad leds on arrival and a second one failed more than 6 months later

Hey, if I buy BLF Q8 can I use my XTAR VC2S charger or I need to buy 4 slots charger? I’ll buy 4 new cells.

There’s no problem charging them in two batches. The parallel configuration in the Q8 does not require perfect charge matching.
It is always a good idea of course to keep the 4 cells together so that they receive the same wear over time.

The charge matching is one of the big reasons I like the SP36. Having a built-in charger allows me to charge all the cells at once, to exactly the same level… even if that level isn’t 4.20V. Otherwise it’s kind of hard to do a partial charge on a married set of cells.

But if you’re charging until full, there should be no problem charging two cells then charging the other two.

How many are considering adding the new 3v xhp50.2 on a LED4POWER mcpcb?

The Q8 seems like a great choice for this new led.

How many lumens would those give out in a Q8?

Not considering it, it is going to happen the day the leds come in (will take a while, they come via the CRX group buy). Lumens? About 12K

Wow that is a huge difference.

Can this diffuse survive on Q8 12K lumens?

https://www.aliexpress.com/store/product/2pcs-lot-White-diffuser-for-sofirn-C01-C01S-SP10-SF14-Q8/2933049_32991805908.html