The ssu is the right version we need 8S1 type that is the smaller one, which is on a nanjg. The SU is the wider 8S2 version(like the tiny85 someone mentioned).
Zener mod should work, on the mentioned PCB I have a spot for one of these big Diodes(minimelf?), I ordered some 5.1V types from eBay.
Rufus which type differents do you mean?
The tiny13 tiny85 thing?
If someone needs more space he could also hand solder another small tiny in there, gmarsh used a tiny85 on a nanjg ,in his tv bgone driver, without problems.
FET & 7135s would have to be run from two separate output pins from the attiny, the only reason to do that is to get a lower low than you can get with just the direct drive FET.
With the FET+attiny only, a PWM value of '5' is pretty damn low, though it's higher than what you could call a moonlight. I used 0,5,20,60,130,255 in DrJones' minimo FW, in the direct drive/3x light, and the low is nearly identical on the lux meter as the standard low (not moonlight) in nlite with a single XML2 P60.
I thought that might be the case. If the 13A struggled to control the gates at high frequency and low on time the 7135’s would be used for LMH and Turbo was only the fet only at 100%. But you have completely replaced the 7135’s. Nice work here. I don’t understand it all but been following anyway.
Well it runs fine at a PWM value of 5, or this FET does anyway. It might be different with different drivers (like, multi-channel drivers with more than 1 FET) or a different single FET. I think 5 is the minimum with whatever CPU clock DrJ used, I know less than nothing about the code.
That's a normal 105C still using the 8x7135s, it may be different running the FET. As a test I gave it modes of 0,1,2,3,4,5,100,255 just to see what happens (DrJ has a comment in the source that 5 is the minimum, but I think most folks know by now about me and following instructions...). It makes no light at all in the 1/2/3 value modes - it might behave different in a triple, with LEDs in parallel (lower Vf threshold).
I found a source, in the U.S. even!, for a bunch of Vishay SUD70N02-03P (pdf: http://www.vishay.com/doc?72246)
I've gone a bit crosseyed trying to slog through datasheets, but this one looks to have half the Rds(on) as the K4212... .0042 ohms vs. .0085 ohms. Right? And it should work without changes in the same circuit as the K4212? Logic-level thingamajig and the rest?
I'm really digging Werner's UI. Being able to start on high or low without cycling through is awesome! Very responsive. Just need a lower low (moonlight) and I'll be happy with this setup.
How low it can go and still make light will be highly dependent on the hardware. If he releases the source when it's ready so everybody can plug in their own levels... :love:
And yeah, who needs memory when you can make it do whatever you want? I can never remember what the last mode was, so it's not much help if the light remembers it.
DrJones' MiniMo FW, 7 modes (PWM values of 1,3,8,20,50,120,255), input pin switched from star #4 to #3 to be compatible with the same wiring used with Werner's FW. Both .hex & .txt in here: http://75.65.123.78/fw/
The lowest mode with a PWM value of '1' gives 0.3 lux in the ceiling bounce test. Not quite moonlight... but on the same meter, a stock 2-mode SRK driver's low mode did 10.9. :D
FET is a recycled TO-263 Infineon IPB05N03LB, supposedly a Rds(on) of 6.1milliohms. I left the 10/10k resistors in place, don't know if they're necessary with this FET but it works and I think if this poor PCB has any more soldering done to it there won't be any traces left.
I can only guess at the total current, my meters get flaky even with big fat leads. When measuring and the meter showing around 9.5 amps, shorting the leads (bypassing the meter) just about doubles the light output.
The 6x XML2s are in one of the gold Securitylng lights and using one of the red 'JB' drivers. I don't currently have a home for the blue driver.
Ceiling bounce numbers, using Samsung 20Rs, the 3x XML2 T6 3B light does 241 lux and the 6x XML2 unknowns does 273 lux. A stock ~6.5A 3x XML SRK does 54 (yes, fifty-four, lol) lux.
Heat isn't a problem, not with a user-friendly UI with either 5 (Werner's) or 7 (DrJones') levels available. Level 3 on Werner's and level 5 on MiniMo are both more light than the stock SRK.
