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Re: [colorforth] ForthBox and FPGA (was: Ideas)


Luis,
I appreciate your sense of humor.  I could not help but chuckle out loud
twice, and I learned something too.

John Peters

----- Original Message ----- 
From: "Luis" <forth@xxxxxxxxxxxxxxx>
To: <colorforth@xxxxxxxxxxxxxxxxxx>
Sent: Tuesday, March 02, 2004 2:57 AM
Subject: Re: [colorforth] ForthBox and FPGA (was: Ideas)


>> I ask you now: take out your computer's motherboard.  Look at most of
>> the chips on the motherboard.  Look at how *close* those pins are.
>> Would YOU like to solder those by hand?

>
> Oh no, I'm still recovering from the burns I got from picking up a
> glass casserole dish straight from the oven (the mitt was on the other
> hand... I was in a hurry :)
> Reflow ovens are far too expensive for this type of project. I have
> made solder filings mixed in with some thinned epoxy, dabbed onto the
> QFP pins. The IC then got carefully wrapped in a few layers of tin
> foil. Once placed I heated it up with a gas soldering iron with the hot
> air attachment on full blast. Ok, so it didn't work the first time, I
> blew the foil off with the hot air, but after that it's been ok.
> Even this may be too much for the absolute novice (I classify myself as
> a novice). Standard electric irons would be cheaper too.
> Surely there are modern IC's in DIL packaging?! The PIC to name one,
> there's sure to be more.



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