Re: gEDA-user: Success with gEDA tools...

[Peter Clifton <pcjc2@xxxxxxxxx>]

On Fri, 2008-07-18 at 16:14 -0700, Steve Meier wrote:
> Reversed polarized cap? Those ones are easy to find upon power up :)
> 
> I don't think it is sufficient to rely upon the silk screen to provide
> assembly instructions.
> 
> For cases like this you really need to provide written assembly
> instructions and make following them part of the purchase terms.
> 
> But my experience is that especially on larger orders a certain number
> of the parts will be dropped and thus not loaded by the p&p tool. These
> then get hand loaded and can be put in rotated 180 degrees very easily.
> 
> Another example of the fifty fifty rule. Given two choices I will pick
> the wrong one 80 percent of the time. Given one choice the odds of being
> correct only improve to about 70 percent.
> 
> It got to the point that we require each board come with a tag telling
> us which parts were hand loaded so that we could visually inspect the
> board before power up.
> 
> Steve Meier

I never thought of that.. I guess I should send them a note about the
LEDs.. (I just marked "+" and "-" next to them).

-- 
Peter Clifton

Electrical Engineering Division,
Engineering Department,
University of Cambridge,
9, JJ Thomson Avenue,
Cambridge
CB3 0FA

Tel: +44 (0)7729 980173 - (No signal in the lab!)



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