Cree XM-MR 5000K:
It’s not as green as it looks:
I designed and built my own Anduril2 FET+1 driver for it:
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Sweet. I would like to know more about the driver.
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Looks awesome! Can’t wait for mine to show up.
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It’s just a FET+1 that uses a T1616 MCU.
I used a PFET instead of a diode for RVP/RPP, that increases the voltage to the MCU about 0.2v to 0.3v.
That should help with FET RDS(on) to squeeze as much current as possible.
There’s a hole in the center for a + spring bypass,
I’m using 18ga wire in my D2GC/XM-MR.
I don’t have the 3D renderings on my phone but here’s pictures of the PCB:
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So the fet part is basically direct drive? Or is there a current limit? Asking because XM-MR has Vf high enough to drive it straight from a solid 21700 to reach max current
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It uses PWM but on turbo it’s basically Direct Drive.
That’s the Plan, maximum Lumens!
I have a Lumen Tube and will get lumen measurements soon.
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I realy like the look of those DDh hosts! Where’d yu get it? Reminds me of Nightwatch
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That’s the tricky part.
KaiDomain has a bunch(they use different names)
But this particular host isn’t available on KD, though the mechanical switch version is.
I ordered this host and a DDH-M4B from TaoBoa via SuperBuy.
Pictures of my M4B:
As it comes with a single 21700 Tube:
With an optional Dual 21700 Tube:
The M4B uses a 32mm driver and a 32mm MCPCB.
I’m putting a 6v SFP55 in mine:
You’re the second person to tell me that today LOL.
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Nice. I think Nightwatch might borrow hosts from DDh.
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The size is prfect for L21A except for the e switch. It probably wouldn’t work as is with a clicky, would it?
They have a similar sized tail switch light that uses a 26650 battery and they have an optional 26800 extension:
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But I already have 2 L21As 
Just looking for a fet driver that can push 20A or at least 15A
Oh, you were talking about the driver not the host.
I read it as, this host would be a good L21a replacement.
MTN sells 22 mm fet drivers.
Actually, you can use this driver:
My buddy measured 18A in a S21A Quad 519A that I built with this driver.
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This is the driver I’m using with XM-MR and EVE 50PL. I just thought it is somehow limited to 12A but obviously delivers whats available.
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Yeah, Simon’s description leads you to believe that but it’s a FET driver.
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Thanks for the valuable info
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Nice Work , You taking orders 
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