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[WP 34S] I finally bricked it :-(
02-03-2015, 03:40 AM
Post: #20
RE: [WP 34S] I finally bricked it :-(
(02-03-2015 03:08 AM)John Galt Wrote:  I agree a reliable programming port connection is essential Barry.

The connector I had been using was far from perfect. Making it so that it won't move isn't terribly difficult, just tedious, and I had been putting that off. It's now "rock solid" as you describe and from now on I'll tolerate nothing less.

By the way I believe the connection that may have broken half way through programming was J31 (Vcc). I was intentionally supplying calculator power through that pad, and it was that side of the connector that needed adjustment.

MarkHaysHarris777 you might want to keep that in mind, since your design is using the same idea.

I too agree that a tight clean connection on the pogo pads is essential; which is why I chose the larger pointed pogo tips (they are more expensive, but worth it). John makes a good point too about the J31 Vcc pin. i have decided to place an electrolytic cap 1 mf 6v across Vcc (J31) to ground. My connector is tight and clean (I mean electrically it doesn't move at all) but why take the chance?


Kind regards,
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RE: [WP 34S] I finally bricked it :-( - MarkHaysHarris777 - 02-03-2015 03:40 AM

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