I’ve been testing the 20mm Boost and it’s really nice, robust enough that it just doesn’t give a lick of problem no matter what I do with it. I currently have two of them, one in an L2 with XHP-35 and another in an C8+ with XHP-35… single cell operation and a very wide range of control. Both of these lights are special lights, the L2 is a clear machined finish and the C8+ is a prototype that I got lucky enough to end up with… and now both have outstanding drivers that really deliver! My C8+ is getting 1999-2003 lumens in my newly rebuilt calibrated light box. It manages heat exceedingly well, ramping up and down to find a sweet compromise on it’s own accord, and yet if I want to keep bumping it to Turbo it will take the heat more than I can. Just gotta love it!
Dale - are the boost drivers you using set to 2.3 amps out? I see that's a config option and sounds perfect for a XHP 35 HI, specially with those lumen #'s you are getting. Could be 2.0 amps as well...
Yes, 2.3A out. The UI is Guppydrv3.0, quite a lot of options.
It can work with one or 2 cells, is more efficient and cooler running with 2 cells as it isn’t boosting as hard. I’m really enjoying the C8+ a lot, the L2 as well but use the C8+ more it seems. (size factor I’m sure)
I have the C8+ set for 5 levels, with a short 20ga loop between the MCPCB and driver lead at the emitter I see…
0.02A
0.03A
0.32A
0.65A
2.22A
This from a Sony VTC5A at 4.09V.
He doesn't say but looks like an ATMEL MCU based on firmware offerings? Good it's planned on to offer e-switch support.
The listing says 1S battery config only for the first batch. Is yours a prototype?
ATTiny25, yes.
And because someone will surely notice, yes, I machined the driver bay in my Prototype C8+ to accept a 20mm driver from Richard. 
^DB Custom, I hope you are doing good my friend. 
I want to give my thanks to Richard at MtnElectronics for installing a Nichia R9080 onto a custom board for the Relio light.
He has helped make an awesome light even awesomer!
I managed to resolve the flickering problem on my XHP70 zoom flashlight mentioned earlier. 
I just removed a 26mm MTN driver from another flashlight and swapped the MCUs. The light shines nice and steadily now. Some weird behavior is left, though, as with Crescendo at turn on it stays at a low mode first and after two or three seconds ramps up very fast to maximum brightness. 
The ramping on the other driver worked much more smoothly. But I’m happy with a non-flickering flashlight and don’t mind as much about a not linear ramping.
I guess it has been stated before that Richard was hands full with different projects. But…looking currently at the driver’s section of MTN, many (almost all!) FET DD drivers (and not only these) are out-of-stock.
Does anyone know if or when they will be restocked?
and boost, buck, mtn triple xp
Yes, nearly all of his popular drivers are out of stock.
I suspect it is due to the confluence of the orders mentioned, as well as the summer break, and IIRC a recent baby as well.
I hope he restocks soon, as many of these drivers are virtually impossible to source elsewhere. Richard is an invaluable community resource. However, I do not wish to pressure him in any way to speed things up, because I understand how life goes. I just set some e-mail “back-in-stock” notifiers and continue on - the lights I’m working on/planning currently are for Christmas gifts anyway
Well said sir, well said.
I concur! No need to rush, just was wondering about the “sold-out” in some many pieces!
Maybe he’s working on a “autumn-winter” collection to heat us up :smiling_imp:
Ehehe!
It’s been awhile since i been on the forum but I placed a order 1-2 weeks ago for a led and has not shipped yet ? Does it normally take this long from RMM
I would say that's not normal, specially if you ordered something listed as in stock? He lists availability and qty. I would say 1-3 days is normal, unless he posts he's on vacation or something. I would try reaching out to him. He's really not on BLF anymore.
Yes, I would make an inquiry. I received an order Friday for a few led’s on mcpcb’s and a driver that had to be flashed that I ordered last Monday.
Thanks guys it was just a led on a XHP70.2 sent few messages on there site hope it come soon
All the D4V2 s are out of stock. Wonder what’s up.
He shows qty 58 in stock - the tailcaps are out of stock ??
Some color and led combo’s are out of stock, but there’s nothing sinister about that.