… or instead of sacrificing the flashlight to save the user, maybe it could use regulation, thinner wires, or moderation so it doesn’t get scorching-hot in the first place? This way, it wouldn’t hurt the user or the flashlight.
If it’s too hot to touch, it’s probably too hot period. Incandescent lights may operate at 5000 actual Kelvin, so insulation is appropriate for those… but LEDs die faster the hotter they get.
I’ve never had an LED in a light die from too much heat. I tend to go on to the next LED light toy before that happens. As long as my LEDs aren’t getting so hot that the solder melts I’m fine.
I’m also not a programmer. In the DQG I was using a driver with moppydrv firmware with a programmable stepdown. Only problem was the stepdown only went to 50% FET, and in that light even 50% was too much for extended use. I either need a rampdown to 20% or I need a temp sensor.
On the upside, it looks like RMM may start selling drivers with the new firmware on them in different dimensions. So hopefully I can replace the drivers on all my old e-switch lights with drivers with your new v2 firmware
Just got my S4 2B, and it does get dangerously hot. I took the optics out just to see how it would be as a mule and the end started smoking vigorously within 5 seconds. This flashlight doesn’t seem safe?
It’s fine now, the domes aren’t cloudy or anything. It was more surprising than anything else. I do love the light, I just wish LEDs were more efficient here on the ragged edge of emitters in hotrods. Love the UI.
Yeah, without pressure holding the MCPCB against its heat sink shelf, it’ll cook itself pretty quickly. That’s normal. It shouldn’t be operated at high current with the heat sink nerfed.
(this also applies to wrapping the pill to make the surface feel less hot, though that has less immediate results)
D4’s MCPCB is 2mm thick, all other MCPCBs are 1.6mm, it is highly unadvisable to use a thinner MCPCB which will create issues with thermal transfer between the head and the MCPCB as the Bezel is holding down the MCPCB by pressing down on the optic.
Neither should the flashlight be used without the bezel and optics in place, doing otherwise will overheat the LEDs.
The D4 will produce tremendous heat on turbo mode, and heat up very fast (10~20 seconds for the thermal protection to kick in depends on the cell), please make sure the bezel always be tightly enough on D4 although it’s checked very well before leaving the warehouse.
The price has been increased once again… :weary:
EDIT : ordered anyway, I’ve waited for such a compact e-switch flashlight too long… and with that FW I could not pass !