On 10 Jul 2014 at 0:20, peter green wrote:
> I wonder if the trick shown at https://www.sparkfun.com/tutorials/114=20
> could work, by staggering the pins on a header footprint slightly you=20
> make the header a much firmer fit
>=20
> They did it to make soldering the connector easier but I suspect that=20
> with the pins staggered like that it would make a good enough connection=
=20
> for programming without being soldered.

I just tried the staggered pin method, wroks well. On my target PCB I used =
6 x SIL=20
0.1" pitch pads with 0.9mm (0.035") holes offset alternately 0.05mm (0.002"=
) either=20
side of the centre line. Pins are a fairly loose fit, but ok for programmin=
g. Next time I=20
might increase the offset, perhaps by as much as 100%. In this case the PCB=
 is=20
immersion gold finish, likewise mating with gold plated header pins. I'm su=
re it would=20
still work acceptably well for solder plated PCB's, at least for production=
=20
programming when everything is new and clean.



--=20
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