good news today 200 AMC7135 got delivered
so more reflow work for this afternoon and evening
I got no reponse for days from kaizer for days
If he does not answer till wednesday a 17 and 30mm get free from reservation
so finally reflowed all those 200 AMCs and some MCU sides of 17/20/22mm
in the picture on the left side drivers that are ready to be programmed and tested,
already passed visual check, with some that needed some parts aligned right, remove solder blob shorts between pads
on the right side drivers with AMCs missing as I expect 100 from the last order I added after I got more MCUs and fets to build some extra drivers
I did learning by doing for reflowing drivers
I learned how to apply a tiny but sufficient amount of solder paste with some tricks
just see one of the first vs the last, optical far better, but electrical identical
so we got for programming
1 15mm Narsil
4 17mm Narsil
9 17mm Bistro
1 20mm Bistro
1 20mm Narsil
1 21mm Bistro
3 21mm Narsil
1 22mm Bistro
1 22mm Narsil
12 30mm 2S LDO Narsil
4 30mm 1S Narsil
3 38.5 1S Narsil
At this rate you will surpass myself in the most TA drivers built lol.
The latest drivers do look much better, you donāt need much paste at all. This is why the stencils are so nice, they give you the perfect amount and put it in the perfect spot every time and in a a couple of seconds too boot!
A tip for better reflowing is to reflow the top side components first and heat the pcb from the bottom with about ~350-380c air. First off this lets you use much higher air speeds without blowing components off and it also ensures the best possible connection.
The 7135 side just do like normal from the top of the components. They are much easier to deal with like this.
Added indicator resistors to all Narsil drivers
Wiring like in this picture
first driver flashed and under testing and temp calibration
With lots of happy on lookers. 
first 8 Narsil driver cleaned from flux, electrical check
test and temperature calibration
Wooo Hoooo! 
:+1: 
Input
100 AMC7135
3 17mm boards
Output first orders complete to get shipped
this is now the 3. board witch such an issue
not enough solder mask paint, and I get ground short from back of one AMC7135
costed me 1.5 hours so far
board looks messy when you unsolder those AMCs too often
Those shorts are almost always a result of too much solder paste. This is why I recommended the stincles. They make it much easier to get the right amount but not too much.
This is a case where less is more.
The mask looks good, the solder looks to have been pushed up from the FET having too much paste.
Generally if you replace the 7135 and reflow it back on it will work fine as that removed a little bit of solder paste when you do that.
Lexel, can you explain what ātacticalā means on your spread sheet?
Also, on the drivers with resistors added for LEDs, can you explain the difference between indicator LED and lighted side switch LED?
Thanks
I still havenāt decided which version of Narsil to go with.
tactical means if you got a tailswitch the light always get in turbo as you turn the power on
there are 3 settings atm for start up, 2 blinks with low mode, turbo and no light
indicator LED blinks out what you configured it in UI settings
lighted sideswitch just lights the switch as soon as you connect the battery with tailswitch, but it has parasitic drain and can overdischarge batteries
Sorry for the setbacks. I hope youāre having some fun putting these together. I can tell your very organized. Iām sure that has helped make it much less frustrating.
Iām looking forward to having four more lights unified, all running Narsil.
I appreciate the work You, Texas_Ace, TomE and others have done to make these possible.
Okay, mine doesnāt say tactical on the spreadsheet, but it should.
Also, I only need the lighted side switch, so I think Narsil v1.2 is what I should go with. That way I also have the low votage protection.
Thanks
v1.2 has no temperature protection, so if thats Ok for you
Tom E is too busy to make LVP / indicator switch into Narsil triple v1.5
Yes, thatās fine by me. My hand is the temperature protection. Lol
Plus, Iāve recently switched to unprotected Liitokalas for more output so the LVP is more important to me even though Iāll have the lighted side switch to tell me if the rear switch is on or off.
These do look great. Thank you for making these for the community.
mattlward
vinte77
statix57
Kawiboy
Etex
MrJohnny
sent today