Yes the fact that they are not mentioning Cree seem like a indication.
TEST to see how BLF reacts to a spreadsheet copy paste
Q8 BLF Special SRK inspired flashlight
BLF Q8 Marking/logo “BLF Q8” for the groupbuy, manufacturer can choose own marking/logo afterwards
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Pricing $ 40 including shipping
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EMITTERS 4 pieces 3535 footprint
Cree XPL HI V2 3B More choices of tints are prefered
Cree XP G3 NOT SURE Pendng testing of these
COPPER DTP stars Noctigon for example
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Internals Integrated LED shelf for good thermal dissipation at least 4mm thick
18 AWG Wires Wires to led not through center of integrated shelf but the sides of it
Driver retainer ring
Double springs with the smaller being Phosphor Bronze springs
Threads square or trapeziod (not triangular) for battery tube
Anodised threads part battery tube that screws into the head for lock out
Tailap can be unscrewed to access the pcb connecting the – side of the cells
Threads square or trapeziod (not triangular) for tail cap
Threads bezel can be anything manufacturer chooses
Electronic side switch
Mounting for tripod mounting nut hole not drilled though the whole body to ensure waterproofing
placed opposite of the button
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Optics Aluminium reflector same top sizes as the older SRK reflectors
Glass lens 2mm thick
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Protective O-ring bezel quality thick and perfect fit
O-ring battery tube quality thick and perfect fit
O-ring tail cap quality thick and perfect fit
HA2 anodisation not HA3 for the groupbuy
waterproof switch
Stainless steel bezel
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Software Tom E Narsil firmware Several mode and blink modes
User configurable
Fixed modes and ramping
Voltage check
Low voltage cut off
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Driver design Tom E Electronic switch driver for Narsil firmware
Very low parasitic drain
Able to run 1,2,3 and/or 4 button top 18650 cell(s)
MCU Atmel ATTINY85V-10SH or ATTINY85-20SU
package is important: 8S2
FET Manu: Vishay Siliconix,
Manu PN: SIR800DP-T1-GE3, Digikey PN: SIR800DP-T1-GE3CT-ND
form factor: PPAK SO-8
Resistor 0805 SMD 47K OHM 1% 1/8W
Resistor 0805 SMD 220K OHM 1% 1/8W
Resistor 0805 SMD 12K OHM 1% 1/8W
Diode Schottky, 10v 570 kA SOD323
Manu PN: ZLLS410TA, Digi-Key PN: ZLLS410CT-ND
Capacitor 0805 Ceramic, 12uF 16V X7R
If possible 12 uF or higher instead of 10 uF — may be required
7135 7135 350 mA 7135 amp regulator
used for low modes
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Quality Samples 100% as agreed and specified
Final production lights 100% as agreed, specified and samples
Video of drop test shipment packaging made available before lights available for sale. This video showing
at least 10 drops of the light in packaging from at least 2 meters high
All lights tested before shipping to spot and fix problems and avoid DOA.
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Driver Design Notes:
The 47K and 220K resistors are the voltage divider, where the 220K is R1, the 47K is R2
The 12K resistor is a FET gate resistor (on the trace from the MCU I/O pin to the FTE Gate,
connected to ground.)
Diode is for reverse polarity protection
The SIR800DP FET is expensive, but can easily handle the high amps we get in driving 4 parallel LED’s
from 4 parallel cells, without any degradation or heat. It’s an extraordinary performing FET for it’s size