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- README: describe mechanical stacking and the function of the various protective layers - cvr.py: model of the cover sheet, with gnuplot and HeeksCAD output
31 lines
1.1 KiB
Plaintext
31 lines
1.1 KiB
Plaintext
Mechanical stacking
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From the bottom to the top, we have the following elements:
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- Ben case, bottom shell
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- a few drops of glue or silicone, to hold the counterweight in place
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- the counterweight, covered by protective paint
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- a few drops of glue or silicone, to keep the cover sheet in place
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- a cover sheet of thin hard plastic, e.g., the type of plastic film used to
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make transparencies
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- isolating tape, applied to tall components of the Ben's main PCB
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- the Ben's main PCB
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Protection
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The counterweight is covered by one or more layers of paint, to prevent
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direct skin contact with the lead during handling. The paint may also
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offer some amount of protection against electrical contact.
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The counterweight is covered by a layer of hard plastic that isolates
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from electrical contact and that also resists being punctured by pointy
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components or solder joints of the main PCB.
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Finally, all elements on the main PCB that are unusually tall are taped
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over, to further reduce the risk of them working their way into the
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counterweight. Right now, the only component where problems are
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considered likely is the buzzer.
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