Convoy L2 can take 30W continous
Of course 20mm, 22mm will be availiable as well
The GT buck 2S/4S will be down to 28mm with more expensive 8x8mm inductor availiable
Even with a 3A max @ 12V, that’s still around 1500lm each for ~4500lm turbo.
I see a upgrade in the future for my E2L. :heart_eyes:
Also, the idea of a EE X6 or a C8 w/ xhp35 would be fun.
Hmmm, X5 pocket thrower
Lots of possibilities w/ this 17mm boost driver.
You can get similar numbers with 3V LEDs, for ex. 3x Luxeon V would do ~3x1500lm at 4A each, and with good regulation time becuase of low Vf (~3.15V)
You can fit tiny85 here.
Attiny85 with Narsil switch pad added
also all 3 pads unused now availiable,
one shares the voltage divider, which is in Narsil the indicator LED pad
Will you be releasing schematics and parts list? It looks like the ATtiny1634 will fit nicely.
I will release everything when it’s tested.
Which is part of why I will be working on and testing yours (plus the latest design is better).
Only interested in this design too. Loneoceans did release his stuff, but to my knowledge no one other than him actually built one. Now he ain’t here no more.
yeah Shoki is working with Eagle and I am with Diptrace, but final design should be technically identical
Then why bother messing with the design? Just use Schoki’s design once it is released.
Just in case and to cross-check for any errors creeping in?
basically why I was not happy with poor cooling of the boost chip with no viases to the other layers and the option to put more boards on a Seeed 10x10 board in production
and I got no Eagle, no advanced license for it and I think getting used to a 2. program is too much
did a 24-30mm variant
OPA parts got closer together
12mm inductor to save money with better performance
Patiently waiting for the single cell XHP50.2 goodness. Any tests!? 
Still waiting for parts and PCB’s to arrive.
I did some light load bench tests, before I fried my driver. The most I did was 8W for 15min in free air, with an XHP35.
No problem for the driver at all. The XHP35 was a few centimeters next to the driver, and was shining on it a bit (when I blocked the light shining on the driver with my hand, it got pretty warm). Even with that, the driver got just a bit warm. If I had to guess, it was around 40°C (with 24°C ambient).
The board that I used was the first revision and had bad thermal properties. The newer boards should do better.
I hadn’t seen it mentioned but would it be possible to use 1 or 2S input to output 12v in lights with extension tubes?
Yes it will be possible
Will this driver be able to be programmed to supply 12v 700ma and lower currents?