[hackpgh-discuss] Re: PCB class

  • From: Sayan Chakraborty <c.sayan@xxxxxxxxx>
  • To: hackpgh-discuss@xxxxxxxxxxxxx
  • Date: Fri, 25 May 2012 19:58:03 -0400

Lets discuss - on the way to the shop right now

--
Sent from my Verizon Wireless 4G LTE DROID
On May 25, 2012 6:13 PM, "Matthew Beckler" <matthew@xxxxxxxxxxxx> wrote:

> I created a shared google document to help us flesh out this class. I set
> it up so there is a private URL to visit to edit the document, but since
> this list is publicly archived I don't want to just post it here.
>
> If you'd like to check out / help refine the class plan, email me for the
> link!
>
> -Matthew
>
> On 05/24/2012 11:44 AM, Jeremy Herrman wrote:
>
>> I'm also very interested in this class - especially the thought process
>> that goes into routing, traces etc.
>>
>> For conflicts with your available dates, I feel it's worth mentioning
>> that Steel City Ruby Conf is on August 3rd-4th.
>>
>> Thanks!
>> Jeremy
>>
>> On Wed, May 23, 2012 at 10:55 AM, Matthew Beckler <matthew@xxxxxxxxxxxx
>> <mailto:matthew@xxxxxxxxxxxx>> wrote:
>>  >
>>  >
>>  > On 05/23/2012 10:13 AM, Doug Philips wrote:
>>  >>
>>  >> Hey Matt,
>>  >>
>>  >> Glad you're still alive and kickin'!
>>  >>
>>  >>
>>  >> On Tue, May 22, 2012 at 5:31 PM, Matthew
>> Beckler<matthew@xxxxxxxxxxxx <mailto:matthew@xxxxxxxxxxxx>>
>>  >>  wrote:
>>  >>>
>>  >>> As many of you know I'm going to be teaching a PCB class with Kicad
>>  >>> coming
>>  >>> up in a few weeks. While it's a good software EDA package, and I
>> know it
>>  >>> well, what I'm struggling most with is to determine the proper scope.
>>  >>
>>  >>
>>  >> Given the lack of advertising, promotion, etc. on this, I'm thinking
>>  >> we'll probably only get shop members at the class. That'd be OK, but I
>>  >> wanted to raise the possibility of postponing the class date to allow
>>  >> for more outreach/PR, etc. as well as getting the scope worked out?
>>  >
>>  >
>>  > That's a good point, I forgot we usually like to have a month of
>>  > get-the-word-out before each class. I'm totally amenable to
>> postponing the
>>  > class if that would work better. Here are the weekends I am free this
>>  > summer:
>>  >
>>  > June 23/24
>>  > June 30/31
>>  > July 7/8
>>  > July 14/15
>>  > August 4/5 (MF Chicago, anyone going?)
>>  > August 11/12
>>  > August 18/19
>>  > August 25/26
>>  >
>>  >
>>  >>
>>  >>
>>  >>> think a good group discussion should work just fine. I'm also
>> planning to
>>  >>> be
>>  >>> at the shop this Friday to work on the class plan (and ideally FiniSH
>>  >>> IT!!!)
>>  >>
>>  >>
>>  >> Perfect!
>>  >>
>>  >>
>>  >>> Morning session: How to go from a breadboard circuit to a schematic
>>  >>>  How schematics work, how we represent real work parts with symbols
>>  >>>  Start with a real circuit that I can make on a breadboard
>>  >>>    Perhaps a little uC-based RGB led toy?
>>  >>>  Learn how to enter schematics into Kicad
>>  >>
>>  >>
>>  >> That all sounds good.
>>  >>
>>  >>
>>  >>>  Learn about how to make your own new schematic symbols
>>  >>
>>  >>
>>  >> That seems kind of ambitious? Do we have some kind of open source
>>  >> library that we can contribute back to?
>>  >> I'm just concerned that this one item alone could take most of an
>> hour...
>>  >
>>  >
>>  > That's a good point. Usually the existing schematic symbols are good
>> enough
>>  > for almost everything you need to do, but once or twice I've had to
>> make new
>>  > schematic symbols (the wii nunchuck, for example, and also a brand-new
>>  > microcontroller we used in the blinky kits, both required new schematic
>>  > symbols).
>>  >
>>  > All the symbols/footprints built into Kicad are open source, and
>> there are
>>  > lots of people online who build and share their symbols/footprints
>> with the
>>  > world under open licenses.
>>  >
>>  >
>>  >>
>>  >>
>>  >>> Afternoon session: How to go from a schematic to a PCB
>>  >>
>>  >> ... Most of this is over my head, so I have no idea how ambitious (or
>>  >> mundane!) it is...
>>  >>>
>>  >>>    Maybe talk about component selection?
>>  >>
>>  >> Wouldn't that be part of the morning class going from breadboard to
>>  >> schematic? (Again, I'm a noob, so perhaps I don't understand...)
>>  >
>>  >
>>  > Yeah, I'm not sure where this would fit properly. Probably more in the
>>  > breadboard->schematic part, you're right. Part of it is related to
>> the PCB
>>  > though, in that you probably don't want to pick teeny-tiny SMT parts if
>>  > you're aiming to make it easy to assemble, you know? Let's chat on
>> friday.
>>  >
>>  >
>>  >>
>>  >>>    Maybe have a "come back and solder up your pcb" 2-3 weeks later?
>>  >>
>>  >>
>>  >> Or maybe piggy back on to another learn to solder class? (we'd still
>>  >> limit the total class size)
>>  >
>>  >
>>  > I like this idea.
>>  >
>>  >
>>  > Also I just talked to my PCB guy (@laen from DorkbotPDX) and worked
>> out a
>>  > way for us to get all our PCBs fabricated. He'll then ship them all
>> to me as
>>  > a big panel, and I can separate them in time for the come-back
>> soldering
>>  > class.
>>  >
>>  > -Matthew
>>  >
>>
>>
>

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