Welcome to Laser Pointer Forums - discuss green laser pointers, blue laser pointers, and all types of lasers

LPF Donation via Stripe | LPF Donation - Other Methods

Links below open in new window

ArcticMyst Security by Avery

FREE DIY open source BOOST driver!!! Tested & working!!






Joined
Aug 30, 2008
Messages
6,891
Points
83
40727d1359434766-closed-ben-boost-mini-boards2.jpg
BenBoost Mini V5 board.
 
Joined
Aug 30, 2008
Messages
6,891
Points
83
Here are the specs on the boards of Osh Park.
All boards are FR4 170Tg/290Td which are suitable for lead-free processes and temperature.
They have ENIG (gold) finish for superior solderability and environmental resistance.
They’re 1.6mm thick (0.063 inches) with 1 ounce copper on both sides. For four layer boards, the internal copper is 0.5 ounce.
 
Joined
Nov 23, 2012
Messages
29
Points
0
The gold is a bit overkill for this application, but that's not a problem. Just hope you didn't pay extra for it.
IIRC, you've got a mylar stencil for heat reflowing, the gold shouldn't cause you any problems. However, anyone attempting to use a soldering iron should be aware that gold will mix with solder so be quick and don't muck around too much. Which I suppose is always good advice.
 

trag

0
Joined
Sep 4, 2010
Messages
32
Points
0
Are there any tips for building this driver without reflow equipment? For my build I don't really need it to be tiny so I'm thinking of using a soldering iron and maybe buying some of the parts in larger packages. I wouldn't use the same PCB obviously, if I did this.
 
Joined
Apr 6, 2013
Messages
30
Points
0
I assembled a ben boost driver, but its not seeming to work. I was wondering if someone would look over my board and tell me if I placed any components incorrectly?

20130526172905.jpg

20130526165720.jpg
 
Joined
Nov 23, 2012
Messages
29
Points
0
I know not everyone has hundreds of hours of soldering experience, but that looks like shit. Probably could quicker tell you what's NOT wrong with it.
I suggest you watch some videos on youtube to learn how to do a half decent solder job.. "eevblog" is a good starting point.
 
Joined
Apr 6, 2013
Messages
30
Points
0
Sorry, that was my first time reflow soldering. I kinda just gooped on solder paste. I'm putting another one together that I was alittle more careful with. If it doesn't turn out well I'll laser cut a solder paste stencil.
 
Joined
Nov 23, 2012
Messages
29
Points
0
here's a tip for you - on a board that small, just use an iron. you can solder surface mount parts with an iron and if you're careful it should turn out fine.
 

benmwv

0
Joined
Sep 10, 2010
Messages
1,380
Points
48
Pretty sure the bottom side of those 3 caps are all on ground. What worries me is the lm3410 and the LD+ pad. You used too much paste for the lm3410 and I think it may have some shorts. Also it looks like the ld+ pad might be shorting to ground on the capacitor.

A little practice and theyll start coming out better. The DFN "no pins" package isnt easy.
 
Last edited:




Top