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Dr. Hax 1y ago

Of the 8 #signets that I just soldered together, 4 of them work.

This is a typical success rate.

I hope to have a better success rate in the next revision by putting all components on the same side of the board, and using smaller, higher quality, more expensive solder paste.

Now, I try to determine what is wrong with each device and take notes so troubleshooting and re-work is easier in the future.

#electronics #OpenHardware #security #infosec #privacy

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The Beave 1y ago

Are you using a board mask to facilitate proper solder paste placement?

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Dr. Hax 1y ago

Yep.

I have issues with not getting enough if the paste is even slightly dried out and it sticks in those tiny holes for pads of the CPU.

Other times I have too much due to something that I haven't quite nailed down yet. Maybe the board moves a tiny bit, or the way I'm peeling the mask off, or some little detail where I am being inconsistent.

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The Beave 1y ago

Do you have a 3D printer?