djozz
(djozz)
November 15, 2017, 8:02am
13
That is wonderful Lexel, if built up one-sided I can even use 2 chips and have up to 700mA regulated (mode spacing with A6-firmware should not be too bad)! I ordered 3, will check them out, and report here.
I’m not sure if I’m a rare exception: can solder very well but can’t do computer stuff. For this board I can just rob all components off a common BLF-A6 board (or BLF X5/X6 board) and that is all there is to it.
Lexel
(Lexel)
November 16, 2017, 6:13pm
14
I just realized that the Fet +n has wrong pinout compared to A6
thulfiqar
(thulfiqar)
November 16, 2017, 6:38pm
15
it happens .
we will wait your fixed Version
Thanks for the Updates Lexel
Lexel
(Lexel)
November 16, 2017, 7:32pm
16
I fixed the Fet+ n 7135 one, should be pin compatible to A6 now
Pin 6 FET pin 5 AMCs
https://oshpark.com/shared_projects/MSr9VRbY
thulfiqar
(thulfiqar)
November 16, 2017, 7:04pm
17
Many thanks lexel, helpful as always :+1:
djozz
(djozz)
November 16, 2017, 8:27pm
18
Good that you noticed the mistake, ordered again
Luckily Oshpark is dead cheap for these little boards…
thulfiqar
(thulfiqar)
November 16, 2017, 8:30pm
19
will the OSRAM 4715AS handle a reversed BLF a6 Driver (Like lexel’s) on a DTP Board ?
djozz
(djozz)
November 16, 2017, 8:39pm
20
Not sure, I guess it is safer to go for the 8x7135 version above without FET.
thulfiqar
(thulfiqar)
November 16, 2017, 8:43pm
21
I started with 2000ma , Then 3000ma , Now FET
GREED :laughing:
djozz
(djozz)
November 16, 2017, 8:46pm
22
In that case:go for it! :partying_face:
Lexel
(Lexel)
November 17, 2017, 2:21am
23
4715AS wont survive a FET, this is a IR LED with a forward voltage way below our white LEDs
2-3A on DTP should be possible, but FET would go >10A and boom
Black flats should work with FET
Lexel
(Lexel)
November 17, 2017, 2:22am
24
you could still cut one trace and do 2 thin wires to rewire PWM pins
djozz
(djozz)
November 17, 2017, 8:29am
25
Lexel:
4715AS wont survive a FET, this is a IR LED with a forward voltage way below our white LEDs
2-3A on DTP should be possible, but FET would go >10A and boom
Black flats should work with FET
A quick look on the datasheet mentions a Vf well above 3V, so this may be one of those 2xseries-die leds?
Lexel
(Lexel)
November 17, 2017, 2:25pm
26
datasheet shows 3A at 3.8V this may work, but could still fry the tiny 1mm² emitter that has 9K/W thermal resistance
even our white XPL LEDs don’t like to be driven at much higher than double rated current
Gea2427
(Gea2427)
December 5, 2017, 3:31am
28
Has anyone received and put one of these together yet? Looking to use an osram flat black just wondering if anybody has done this combo with one of these boards yet
djozz
(djozz)
December 5, 2017, 8:22am
29
I have ordered them but have not received them yet. Perhaps folks in the US have them sooner than me?
Gea2427
(Gea2427)
December 6, 2017, 11:21pm
30
So does anyone know if this is this an inverted copy of a blf a6 driver? Can I just remove all components from the a6 driver and put them on this board?
Lexel
(Lexel)
December 7, 2017, 7:23am
31
The board uses another FET size
The AMC only one is compatible to Convoy or 105 drivers
djozz
(djozz)
December 7, 2017, 8:52am
32
I received the inverted FET+7135 boards and will check the BLF-A6 components+tiny FET on them probably this weekend.