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<div class="moz-cite-prefix">Am 31.10.2020 um 16:12 schrieb David
Simpson:<br>
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cite="mid:CACa+HV03+pQFSRxTMge45ZTf_tNrwfr90MD6WdBLD7uBx_5Zkw@mail.gmail.com"
type="cite">
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<div>Hi Steve.</div>
<div dir="auto">Thanks for this excellent description of your
process. lots of helpful tips. </div>
<div dir="auto">Would love to see some pictures if you have them
handy.</div>
</div>
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<br>
I don't have anything handy that would somehow showcase especially
the "tablet aided construction" as it were ;)<br>
I reckon the end result doesn't really look much different than
anyone else's boards, other than I mentioned it specifically as an
aid to make circuits of somewhat higher density than usual
experimentel perfboard circuits.<br>
I can imagine there are persons who find this too fiddly mucking
with the software and are practised enough to just do it all in
their head and by sight of the circuit flawlessly, but I'm not such
a one, so I thought I throw it in there, maybe someone finds it
useful.<br>
<br>
Forgot to mention about the green plated-through perfboards that
many chinese eber sellers have,<br>
while the fact they have contacts from top to bottom can help, you
also need to take extra care of course, to not make unintended
connections, especially with the lazy use of not-insulated wires to
make long traces I mentioned - then accidentally crossing one of the
bottom side with one on the top.<br>
<br>
<br>
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cite="mid:CACa+HV03+pQFSRxTMge45ZTf_tNrwfr90MD6WdBLD7uBx_5Zkw@mail.gmail.com"
type="cite">
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<div dir="ltr" class="gmail_attr">On Sat, Oct 31, 2020, 7:59
AM <<a moz-do-not-send="true"
href="mailto:sleepy_dog@gmx.de">sleepy_dog@gmx.de</a>>
wrote:<br>
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<div><br>
Heh. If I need something quickly, cant wait for PCB,
but also it does have certain physical dimension
requirements,<br>
then I do get really "boring" and do "plan" perfboard
- "what is the fun in that" someone asked - indeed,
what is the fun in that sort of tedious, repetitive
work alltogether?<br>
Better make it as short as, and least error prone
possible. It's so much easier to reason about
misbehavior of a circuit if it actually matches what
you have drawn - at least from the obvious (not
parasitic) components and their supposed connections.<br>
While it's perhaps reasonabnly unlikely to make
mistakes if you have all the space in the world and
basically solder together the circuit as-is-drawn on
some big ass perfboard, also leaving lots of room for
adding more stuff to experiment,<br>
as things get more crowded and less intuitively
placed, I found the following to be helpful:<br>
<br>
First of all, esp. for single-sided perfboard, I like
to combine THT ICs with SMT 0805 passives, as you can
often put them comfortably between legs and under the
IC (on the bottom side of the board), that already
saves a lot of space - and wiring effort.<br>
There are also these, often green, plated-through
double-sided perfboards - may reduce the insulated
connections you have to make (which take longer due to
the need for burning away the insulation / tinning),
e.g. all GND with silver wire on the bottom, +V on the
top side, or so, other nets with insulated wire, where
unconnected crossings would be at least.<br>
<br>
Also, in the type of scenario where I would, if I
could, prefer a small PCB, but don't want to wait,<br>
I might already have a captured schematic in my chosen
EDA software anyway - or if it's small, I'll just do
it quickly.<br>
Then convert to PCB, and usually don't route anything,
or at best a few special traces to mark special
preferences.<br>
<br>
I put that on my small-ish tablet with stylus support,
that actually fits on my crowded soldering bench.<br>
that also runs the EDA software. Then I:<br>
<br>
foreach non-GND-net:<br>
highlight net in PCB software<br>
connect all net points in circuit with insulated
"coil wire", point-to-point<br>
hide net's ratlines (or color existing traces) to
make visible what's still TODO - this shrinks more and
more, and you can see the light at the end of the
tunnel<br>
<br>
This, for me anyway, proved much less error prone than
staring on a paper printout and comparing it with the
current physical as-is schematic all the time (even
when pencil checking traces ;) ).<br>
Can basically do that half-asleep without making a
mistake. (just make sure to display the bottom side
mirrored appropriately :D)<br>
<br>
Then for the GND net I do the above, except I user
silver coated copper wire, a bit sturdier, and
wherever possible, do not cut, but bend around
corners, using one long piece of wire across many
connections, saving some work steps. The silver wire
will be over all those coil wires, holding them in
place a bit better, esp. longer ones, and make it less
likely that you will rip off any connection by
accidentally grabbing too hard anywhere.<br>
<br>
<br>
- Steve<br>
<br>
<br>
Am 31.10.2020 um 11:23 schrieb ShedSynth:<br>
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<p class="MsoNormal"><span>Hi all.</span></p>
<p class="MsoNormal"><span>I use perfboard, but I
don’t try to make it into a PCB.</span></p>
<p class="MsoNormal"><span>I wire point-to-point
with single core Kynar wire, normally used for
wire-wrapping.</span></p>
<p class="MsoNormal"><span>I use blue, black, red
and yellow on the back for -12V, GND, +5V and
+12V.</span></p>
<p class="MsoNormal"><span>I use green for all
signals, always on the component side.</span></p>
<p class="MsoNormal"><span>I lay out the big things
like pots, DIL sockets and capacitors on the
board itself, and always try to leave rows of 4
holes to place resistors flat.</span></p>
<p class="MsoNormal"><span>Then I follow the
schematic, which might take several days – this
isn’t a mass-production process.</span></p>
<p class="MsoNormal"><span>I separate each
functional block with a pair of pins + a jumper
so I can test on the scope as I go and also so I
can bodge blocks of completed circuits into
something else.</span></p>
<p class="MsoNormal"><span>Hope this might help
somebody,</span></p>
<p class="MsoNormal"><span>Al</span></p>
<p class="MsoNormal"><span> </span></p>
<p class="MsoNormal"><span>If the picture comes
through, it’s most of a Thomas Henry MAXIMUS
3340 VCO.</span></p>
<p class="MsoNormal"><span>The front is just as
ugly.</span></p>
<p class="MsoNormal"><img moz-do-not-send="true"
style="width:3.2812in;height:4.7187in"
id="m_5123415820274123231Picture_x0020_3"
src="cid:part1.AAB705DC.763E25E9@gmx.de"
height="453" width="315"><span></span></p>
<p class="MsoNormal"><span> </span></p>
<div style="border:none;border-top:solid #e1e1e1
1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal"><b><span lang="EN-US">From:</span></b><span
lang="EN-US"> Synth-diy <a
moz-do-not-send="true"
href="mailto:synth-diy-bounces@synth-diy.org"
target="_blank" rel="noreferrer"><synth-diy-bounces@synth-diy.org></a>
<b>On Behalf Of </b>Timothy Burns<br>
<b>Sent:</b> 30 October 2020 15:17<br>
<b>Cc:</b> SYNTH DIY <a
moz-do-not-send="true"
href="mailto:synth-diy@synth-diy.org"
target="_blank" rel="noreferrer"><synth-diy@synth-diy.org></a><br>
<b>Subject:</b> Re: [sdiy] favorite Youtube
genre - "old guys repairing electronics"</span></p>
</div>
<p class="MsoNormal"> </p>
<div>
<div>
<p class="MsoNormal"><img moz-do-not-send="true"
style="width:2.3333in;height:2.0625in"
id="m_5123415820274123231Picture_x0020_1"
src="cid:part2.14771E27.3935A654@gmx.de"
height="198" width="224"></p>
</div>
<p class="MsoNormal">Good lord, I wish I watched
this yesterday. Also what the heck, did he <i>plan</i>
before he started soldering in components? What
fun is that?</p>
<div>
<p class="MsoNormal">Thanks for the suggestions
of video and audio channels, this will be
great to have on hand as I re-solder
everything from the last 36 hours. </p>
</div>
<div>
<p class="MsoNormal"> </p>
</div>
<div>
<p class="MsoNormal">I'm not saying I'm going to
start now, but does anyone have suggestions
software or shortcuts for planning perfboard
builds? Fritzling? (Asking for a friend.) </p>
</div>
<div>
<p class="MsoNormal"> </p>
</div>
<div>
<p class="MsoNormal">Thanks All!</p>
</div>
<div>
<p class="MsoNormal"> </p>
</div>
<div>
<p class="MsoNormal">Tim</p>
</div>
</div>
<p class="MsoNormal"> </p>
<div>
<div>
<p class="MsoNormal">On Fri, Oct 30, 2020 at
10:34 AM Ryan B8S <<a
moz-do-not-send="true"
href="mailto:ryan@pimpdroid.com"
target="_blank" rel="noreferrer">ryan@pimpdroid.com</a>>
wrote:</p>
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#cccccc 1.0pt;padding:0cm 0cm 0cm
6.0pt;margin-left:4.8pt;margin-right:0cm">
<div>
<p class="MsoNormal"> </p>
<div>
<p class="MsoNormal">Not an old guy, but I
can't believe no one mentioned Synth
Chaser at Synth Chaser dot com.</p>
</div>
<div>
<p class="MsoNormal"> </p>
</div>
<div>
<p class="MsoNormal"><a
moz-do-not-send="true"
href="https://www.youtube.com/c/SynthChaser/videos"
target="_blank" rel="noreferrer">https://www.youtube.com/c/SynthChaser/videos</a></p>
</div>
<div>
<p class="MsoNormal"> </p>
</div>
<div>
<p class="MsoNormal">My favorite youtube
channel by an order of magnitude.</p>
</div>
<div>
<p class="MsoNormal"> </p>
</div>
</div>
<p class="MsoNormal"> </p>
<div>
<div>
<p class="MsoNormal">On Wed, Oct 21, 2020 at
7:08 PM David Simpson <<a
moz-do-not-send="true"
href="mailto:davidosimpson@gmail.com"
target="_blank" rel="noreferrer">davidosimpson@gmail.com</a>>
wrote:</p>
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1.0pt;padding:0cm 0cm 0cm
6.0pt;margin-left:4.8pt;margin-right:0cm">
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<div>
<p class="MsoNormal"> </p>
</div>
<div>
<p class="MsoNormal">I recently found
this video and was astonished by the
skill, technique quietude ala Bob
Villa.</p>
</div>
<div>
<p class="MsoNormal"> </p>
</div>
<div>
<p class="MsoNormal"><a
moz-do-not-send="true"
href="https://youtu.be/_ypW45Y8VSs"
target="_blank" rel="noreferrer">How
to solder grid style PCB / 555 PWM
DC-motor driver (EEEL1-3)</a></p>
</div>
<div>
<p class="MsoNormal"> </p>
</div>
<div>
<p class="MsoNormal">What are your
favorite channels for
informative/instructive electronics
repair? Preferable those who don't
yell or are in a constant state of
outrage...</p>
</div>
<div>
<p class="MsoNormal"> </p>
</div>
<div>
<p class="MsoNormal"> </p>
</div>
<p class="MsoNormal"><br clear="all">
</p>
<div>
<p class="MsoNormal"> </p>
</div>
<p class="MsoNormal">-- </p>
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<p
class="MsoNormal">david
o. simpson |
cameraperson | <a
moz-do-not-send="true" href="http://binarymob.com" target="_blank"
rel="noreferrer">binarymob.com</a>
| earth</p>
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