you can use a medical needle with a small piece of silicon, or buy a
manual SMT vacume pick tool for the tube and typicaly 3 different
size suction cup.
the main thing is to make a Selenoid needle valve to run the
vacuum on = "pick " and Vacume Off = "place" operation.
for very high desnity parts like BGA , send it to advance Assembly,
they have a SMT Proto special.
BoonS
--- In
Homebrew_PCBs@yahoogroups.com, Henry Liu <henryjliu@...>
wrote:
>
> I've grown lazy and outsource everything it seems these days.
>
> I've found silvercircuits.com can make a doublesided board for $54
shipped
> which is way cheaper than I can do it. By the time I run
everything and
> clean it up it has taken at least two hours extra over just
emailing the PCB
> files over to silver circuits. I figure my free time is worth at
least
> $25/hr.
>
> I still haven't found a good solution to assembly however. I was
thinking
> of trying to find some college student to assemble my fine SMT
parts but
> haven't had any luck.
>
> So I thought it'd be useful to make my own pick and place machine.
>
> I'm lucky and have several XYZ tables accurate to .001" or so that
I picked
> up off ebay for under $1000 and control it with Labview. The last
thing I
> need a good repeatable way of vacuum gripping these chips and tiny
> resistors.
>
> Any suggestions? Thanks.
> Also, my life is so much better now that I moved to Labview FPGA
and a
> PCI-7833R board. No more microcontrollers except premade boards
like a
> wireless one TI RF2500 (complete with battery pack).
>
>
> [Non-text portions of this message have been removed]
>