This Gekko headlamp looks great, looks compact and light, very Zebralight like.
I welcome the Unicorn UI, but they need to have a lower low, the 3 lumen minimum on the Unicorn is too high, and this is even more important for a headlamp, I hope they can add a sublumen moonlight.
As far as I have understood the new driver for the Gekko allows very low output with “0.000… lm”. It will also have a slightly more advanced UI with more features and adjustments. And it will be compatible with the Unicorn (but I don’t think they’ll sell them separately and it is not simple to swap the driver).
Do you mean Gekko? Yep, linear driver without PWM is one of the best solutions for this type of lights (the ones which use a 3V-LED and a 18650 battery) :+1:
Linear drivers aren’t that bad in terms of efficiency. Depends a lot on power and battery voltage. 3V LED would require a complex buck-boost driver. Or a different LED with higher Vf and only a boost driver.
Yes, but the question is how much energy will be lost in the buck-boost converter itself…
The buck-driver will give us advantages at low and medium currents, but will lose at high and very low currents. Buck is a good solution for 3-4 LEDs and 1*18650, maybe… Not for one 3V-LED.
Boost will give advantages at very high currents with an empty battery - but with the empty battery the brightness lowers anyway…
Buck-boosts are good, but they usually require more energy on their own.
… where you have been banned for regular flaming and hate speech… And it’s really an achievement to be banned for hating on Russian forums
As to Lume1 project, I’m actually very interested in it, and find it very promising, especially for the high-current throwers. :+1: We are looking forward to testing Lume1 in comparison with other drivers.
But this topic is about latest offers and new lights by YLP, while there are other topics to discuss driver efficiency issues.