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travisgoodspeed / goodwatch

Replacement board for Casio Calculator Watches using the CC430F6147
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Adjust solder stop opening to 0.05 and add Paste layer #71

Closed esden closed 6 years ago

esden commented 6 years ago

As mentioned in #70 the default KiCad 0.2mm solder stop opening is excessive for most SMD based PCB designs. This can lead to exposed ground planes and other issues. Also this prevents the solder stop to create bridges between QFN pads making reliable reflow difficult. A more common and accepted opening value is 0.05mm.

For PCB assembly a stencil is a very useful tool. For that it is nice to have the Paste layer gerbers.

travisgoodspeed commented 6 years ago

@esden Thank you kindly for the pull request!

To ensure that each model number is unique, I've placed the new gerbers into a79f5cb with a manual merge as GoodWatch21. As I've run out of GoodWatch20 boards, I hope to finalize that design and order PCBs this week.

Cheers from Pizza Rat City, --Travis

esden commented 6 years ago

You are welcome. That all sounds very much reasonable! Looking forward to the GoodWatch30 design. :D

Cheers from the sunny Oregon!