Where can I get a 21 mm or 28 mm CC driver at 5.5 amps running decent e-switch firmware like NarsilM or Anduril with as low, or lower parasitic drain? I do really want to know because I can't keep up with all the goin's on.
I'm confused because since when is a 17 mm power switch driver the only one we need? Granted, it's the most popular but for my usage, it's still in the small minority of flashlights I have or am interested in.
Yeah, you’re right.
Limited choice.
Not sure what Lexel has to offer though.
As for diameters, you could use an adaptor ring of some sorts.
Either way, i’m looking for e-switch 17mm FET CC drivers.
I don’t care too much for elaborate UI’s though.
3 modes usually suffices for me.
I will work on D1S and likely some other sizes CC FET drivers, but this will take 5-6 weeks at least to get to production if first design works out well
I’m very impressed. My C8 (BLF A6 DD, NCR18650B) is easily hitting houses at 800m distance(measured with Google maps). That’s the holy grail of LEDs for throwers.
Can’t imagine how the D1S will perform.
Put a white flat 2mm^2 in an Emisar D1S. I wanted to add some resistance to the circuit so I could use the FET driver and limit the current to 6-8A. Switching the springs to high resistance steel would work if you had the right size springs. The battery compartment length is very tight on this light so it would have to be the right spring. I chose to add a separate resistor in the head of the light. I figured I would need to add about 0.1Ohms to limit the current enough with a 30Q cell. The resistance would dissipate around 4W. There is a good amount of room in the head to put the resistor. One could probably use the right combination of 1W resistors in parallel, possibly using thermal adhesive to sink them to the head so they don’t overheat. I chose to use something I had around, some 16 gauge nichrome heater wire. Two inches or so of the nichrome wire has about 0.1Ohms. A difficulty with this wire is that you can’t solder to it. To attach the stranded copper wires I lashed them together using fine gauge magnet wire.
Using a clamp meter I measured 6.0A with a charged (but old) 30Q. Ideally I would have wanted closer to 7.5A, so I might shorten the resistor. I used a XM sized “butterfly” style centering ring that fit the emitter hole of the reflector, then I just fiddled around closing the bezel until it finished centered. I had to add two layers of Kapton tape under the centering ring to get the focus right. I measured 221 kcd. This intensity measurement is consistent with the measurement of this LED at the same current in the EE X6 (111 kcd). This reflector has right around 2x the frontal area (I estimate 1270mm^2) of the EE X6 reflector (~620mm^2). It’s always satisfying when things make sense.