Cereal_killer is asking about PB3 (MCU pin 2). The pad is a 0805 and it’s there for the offtime cap. When used with the ontime firmware this is also called “Star 4”.
EDIT: Clearly that’s exactly what comfychair said. I was confused about what he said, even though he said it quite plainly. He was correct and I just repeated what he said!
Huh? That's what I said... let me try it this way.
Resistor at pin 2 is for the off-time 1uF/10v capacitor.
Zener diode would go anywhere on the trace from the D1 pad (resistor instead of diode, on a zener-mod driver) and MCU pin 8. Most convenient would probably be to put it between one of the vias and to ground.
Ah should’a figured that one, I’m literally right in the middle of learning eagle (since this time yesterday) so my brain is pretty taxed right now, thanks guys.
If you're using firmware other than the STAR off-time you can use the pads as jumpers (same thing, they're just bigger)... or as the switch connection for the momentary version.
(I did call it 'resistor' when referencing the pads, that's probably what did it) :)
BLF15DD Version 1.0: https://oshpark.com/shared_projects/V4ua4iuK
I have removed ALL the old Direct Driver 15/17/20 drivers. I didn't even realize that I had been leaving old versions up. The only boards you will be able to get your hands on are the DD, DD-Z, and linear version 1.0 boards now.
Hey guys any of you US folks interested in getting in on a larger digikey order? I need to reup my own supply, I’m looking at ordering a few hundred resistors, 50 input cap’s and some 13A’s and AOD510’s, I’m probably going to place my order tomorrow, if anyone is interested in getting any of the standard 105c parts and/or FET’s please let me know ASAP and we can get it setup to get better prices.
Also getting some neutral XP-E2’s but the first level price break doesnt start till 50pcs (but still only $2.57/pc)
It looks like I’ll need to do some editing on the op. Family reunion has kept me pretty well occupied this week and flying home tomorrow. I’ve been checking in when I could but it didn’t seem like the dust had quite settled on some of the newest ideas. I’ll be working on editing over the weekend but if I miss something please let me know either here or by pm so I can get it squared away.
It's a 'Medusa' replacement PCB for SRK lights. Fully integrated LED and driver. It was done more for shits 'n' giggles (will look 'mad wicked') than anything else but if it works then sweeeeet. Has a direct driven quad array with medium optic (hence why I asked for that quad optic), a single direct driven (albeit lower current) XP-E2 through an optic for throw (or whatever optic is chosen), and a single reflector with RGB XQ emitters for color mixing. If I ever revise the design I'll replace the direct driven XPE2 with an AMC7135 and a UV emitter probably.
I won't be able to fire it up until I get my MCU from tterev3 (on it's way) or my 4 nichia emitters...which I just realized I haven't ordered yet. Sh*t. I have everything else already so I'll start work on the host and beefing up the heat sink this weekend.