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Mail Archives: geda-user/2018/07/25/13:47:37

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From: John Doty <jpd AT noqsi DOT com>
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Subject: Re: [geda-user] Re: Project file
Date: Wed, 25 Jul 2018 13:46:22 -0400
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> On Jul 25, 2018, at 1:18 PM, Bdale Garbee <bdale AT gag DOT com> wrote:
>=20
> I'm curious about this too, because I work really hard to not have =
anything change at this level between prototype and production, =
myself=E2=80=A6

When you=E2=80=99re designing stuff to go into space, prototype parts =
have to be things you can acquire without too much delay. Production =
parts often have to be blessed by the shamans. These are incompatible =
requirements.

I=E2=80=99ve worked on missions where we were allowed to tell the =
shamans to go away and leave us alone, and the resulting electronics =
worked fine in space. Production boards were identical to prototype =
boards, but with more care in inspection and testing. Saved time, mass, =
and of course money. The spectacularly successful HETE-2 was largely =
constructed of prototype boards upgraded to flight status through =
inspection and testing after the failure of HETE-1=E2=80=99s launch =
vehicle. But the shamans don=E2=80=99t want to hear things like this.

>=20
> Bdale
>=20
> On July 25, 2018 10:34:46 AM MDT, Roland Lutz <rlutz AT hedmen DOT org> =
wrote:
> On Tue, 24 Jul 2018, John Doty wrote:
>  You may have different symbol libraries for prototype and production.
>=20
> How would these symbols be different: in top-level attributes, in pin=20=

> attributes, in pin geometry, or in graphical design?
>=20
>=20
> --=20
> Sent from my Android device with K-9 Mail. Please excuse my brevity.

John Doty              Noqsi Aerospace, Ltd.
http://www.noqsi.com/
jpd AT noqsi DOT com



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<html><head><meta http-equiv=3D"Content-Type" content=3D"text/html =
charset=3Dutf-8"></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" =
class=3D""><br class=3D""><div><blockquote type=3D"cite" class=3D""><div =
class=3D"">On Jul 25, 2018, at 1:18 PM, Bdale Garbee &lt;<a =
href=3D"mailto:bdale AT gag DOT com" class=3D"">bdale AT gag DOT com</a>&gt; =
wrote:</div><br class=3D"Apple-interchange-newline"><div class=3D""><div =
class=3D"">I'm curious about this too, because I work really hard to not =
have anything change at this level between prototype and production, =
myself=E2=80=A6</div></div></blockquote><div><br class=3D""></div>When =
you=E2=80=99re designing stuff to go into space, prototype parts have to =
be things you can acquire without too much delay. Production parts often =
have to be blessed by the shamans. These are incompatible =
requirements.</div><div><br class=3D""></div><div>I=E2=80=99ve worked on =
missions where we were allowed to tell the shamans to go away and leave =
us alone, and the resulting electronics worked fine in space. Production =
boards were identical to prototype boards, but with more care in =
inspection and testing. Saved time, mass, and of course money. The =
spectacularly successful HETE-2 was largely constructed of prototype =
boards upgraded to flight status through inspection and testing after =
the failure of HETE-1=E2=80=99s launch vehicle. But the shamans don=E2=80=99=
t want to hear things like this.</div><div><br class=3D""><blockquote =
type=3D"cite" class=3D""><div class=3D""><div class=3D"">
<br class=3D"">
Bdale<br class=3D""><br class=3D""><div class=3D"gmail_quote">On July =
25, 2018 10:34:46 AM MDT, Roland Lutz &lt;<a =
href=3D"mailto:rlutz AT hedmen DOT org" class=3D"">rlutz AT hedmen DOT org</a>&gt; =
wrote:<blockquote class=3D"gmail_quote" style=3D"margin: 0pt 0pt 0pt =
0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
<pre class=3D"k9mail">On Tue, 24 Jul 2018, John Doty wrote:<br =
class=3D""><blockquote class=3D"gmail_quote" style=3D"margin: 0pt 0pt =
1ex 0.8ex; border-left: 1px solid #729fcf; padding-left: 1ex;"> You may =
have different symbol libraries for prototype and production.<br =
class=3D""></blockquote><br class=3D"">How would these symbols be =
different: in top-level attributes, in pin <br class=3D"">attributes, in =
pin geometry, or in graphical design?<br class=3D""><br =
class=3D""></pre></blockquote></div><br class=3D"">
-- <br class=3D"">
Sent from my Android device with K-9 Mail. Please excuse my =
brevity.</div></div></blockquote></div><br class=3D""><div class=3D"">
<span class=3D"Apple-style-span" style=3D"border-collapse: separate; =
border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Helvetica; =
font-size: 12px; font-style: normal; font-variant: normal; font-weight: =
normal; letter-spacing: normal; line-height: normal; text-align: auto; =
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-apple-text-size-adjust: auto; text-transform: none; orphans: 2; =
white-space: normal; widows: 2; word-spacing: 0px; "><span =
class=3D"Apple-style-span" style=3D"border-collapse: separate; =
border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Helvetica; =
font-size: 12px; font-style: normal; font-variant: normal; font-weight: =
normal; letter-spacing: normal; line-height: normal; text-align: auto; =
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0.0px 0.0px 0.0px 0.0px" class=3D""><font face=3D"Helvetica" size=3D"3" =
style=3D"font: 12.0px Helvetica" class=3D"">John Doty<span =
class=3D"Apple-converted-space">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<span =
class=3D"Apple-converted-space">&nbsp;</span><span =
class=3D"Apple-converted-tab">&nbsp; &nbsp;<span =
class=3D"Apple-converted-space">&nbsp;</span></span></span>Noqsi =
Aerospace, Ltd.</font></p><p style=3D"margin: 0.0px 0.0px 0.0px 0.0px" =
class=3D""><a href=3D"http://www.noqsi.com/" =
class=3D"">http://www.noqsi.com/</a></p><p style=3D"margin: 0.0px 0.0px =
0.0px 0.0px" class=3D""><font face=3D"Helvetica" size=3D"3" style=3D"font:=
 12.0px Helvetica" class=3D""><a href=3D"mailto:jpd AT noqsi DOT com" =
class=3D"">jpd AT noqsi DOT com</a></font></p><br =
class=3D"Apple-interchange-newline"></span></span>
</div>
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