:On 3/10/19 11:38 am, Joseph Gwinn wrote:
On Oct 2, 2019, John Larkin wrote
(in article<gk3ape1kba2heg35f825r77ch91kckam0t@4ax.com>
On Wed, 2 Oct 2019 14:02:07 -0400, bitrex<user@example.net> wrote:
On 10/2/19 1:59 PM, bitrex wrote:
[snip]
PID controllers are apparently a hot area of interest and there are
software guys who will pay just to talk with someone who seems like
they've successfully implemented one.
Nobody teaches control theory in college any more? I guess the
software guys don't learn things like that. I'm not sure what they do
learn.
War story: I´m an EE who went into realtime programming. When I went to add
a degree in Computer Science (this is circa 1980 - the field had just been
invented,
If by "just" you mean in the previous two decades...
Mind you, it was apparent that the term "software engineering" was new
and the professors were scrabbling to find material to make up a course.
Most of what we were taught in SW Eng was introductory systems eng, in
fact. As far as I can tell they hadn't figured out what it meant to
engineer software yet, and this was at a top-50-globally CS dept.
On Fri, 4 Oct 2019 12:19:48 -0700 (PDT), jjhudak4@gmail.com wrote:
On Wednesday, October 2, 2019 at 2:02:14 PM UTC-4, bitrex wrote:
On 10/2/19 1:59 PM, bitrex wrote:
On 10/2/19 1:49 PM, John Larkin wrote:
On Tue, 1 Oct 2019 17:55:09 -0700 (PDT), George Herold
gherold@teachspin.com> wrote:
John (Larkin), You offered to send me a 'standard' NDA. I wanted to
take you up on that. Maybe on dropbox? Or my email (now) is
ggherold@gmail.com
Thanks
George H.
Here is our starting-point NDA.
https://www.dropbox.com/s/b924j4e9jbbven2/NDA%20Draft%20-2%20.docx?dl=0
This has been mangled by multiple lawyers, and other companies usually
sign this, sometimes with minor revs. It's pretty much the standard
Silicon Valley NDA.
We have had some legal doings with a giant company who signed this
basic form when they needed stuff badly. They later discovered that we
take it seriously.
One trick companies will do is to sign the NDA, let you do a lot of
work for them, show them how it's done, and then do a big prior-art
search to justify stealing the designs. I could name names. About all
you can do then is walk away and concentrate on working with people
who have ethics.
It happens and unless the job is heading towards mid five figures
there's not much to do but write it off. I rarely have any work that
pays that much so far.
Clue: if their engineers look eager to do it themselves, they probably
will.
In the 21st century there are online avenues both for contract
work/employment and for just contracting to do tutoring/general
education. If someone seems super-eager to do it themselves then there
is no reason not to just acknowledge that and re-direct to the proper
department, they often accept.
You can charge hourly for just talking, which while perhaps not quite as
well-paid or as emotionally satisfying as designing something, is pretty
easy money. Sometimes they decide they'd rather you do something once
they fully realize it's beyond them so it turns out into being an
elongated pitch session, but you get paid for it.
PID controllers are apparently a hot area of interest and there are
software guys who will pay just to talk with someone who seems like
they've successfully implemented one.
Really??? I'll throw my hat in the ring. Successfully eh? I bet they got tripped up by the issues associated with discretization of an analog model. Yes, numbers in digital computers can and do roll over causing amusing results when integral windup all of a sudden becomes negative. Then there is always the sampling time jitter caused by numerous task scheduling and badly done scheduling analysis. Oh, we'll just throw a few digital filters at it...that just made it worse....lol yes, Nyquist criteria must be paid attention to....
There are a few fun corner cases: bumpless transfer, slew windup,
various bits saturating, nonlinearities, things like that.
The "d" part of PID is usually bad news.
On Friday, October 4, 2019 at 3:24:59 PM UTC-4, John Larkin wrote:
On Fri, 4 Oct 2019 12:19:48 -0700 (PDT), jjhudak4@gmail.com wrote:
On Wednesday, October 2, 2019 at 2:02:14 PM UTC-4, bitrex wrote:
On 10/2/19 1:59 PM, bitrex wrote:
On 10/2/19 1:49 PM, John Larkin wrote:
On Tue, 1 Oct 2019 17:55:09 -0700 (PDT), George Herold
gherold@teachspin.com> wrote:
John (Larkin), You offered to send me a 'standard' NDA. I wanted to
take you up on that. Maybe on dropbox? Or my email (now) is
ggherold@gmail.com
Thanks
George H.
Here is our starting-point NDA.
https://www.dropbox.com/s/b924j4e9jbbven2/NDA%20Draft%20-2%20.docx?dl=0
This has been mangled by multiple lawyers, and other companies usually
sign this, sometimes with minor revs. It's pretty much the standard
Silicon Valley NDA.
We have had some legal doings with a giant company who signed this
basic form when they needed stuff badly. They later discovered that we
take it seriously.
One trick companies will do is to sign the NDA, let you do a lot of
work for them, show them how it's done, and then do a big prior-art
search to justify stealing the designs. I could name names. About all
you can do then is walk away and concentrate on working with people
who have ethics.
It happens and unless the job is heading towards mid five figures
there's not much to do but write it off. I rarely have any work that
pays that much so far.
Clue: if their engineers look eager to do it themselves, they probably
will.
In the 21st century there are online avenues both for contract
work/employment and for just contracting to do tutoring/general
education. If someone seems super-eager to do it themselves then there
is no reason not to just acknowledge that and re-direct to the proper
department, they often accept.
You can charge hourly for just talking, which while perhaps not quite as
well-paid or as emotionally satisfying as designing something, is pretty
easy money. Sometimes they decide they'd rather you do something once
they fully realize it's beyond them so it turns out into being an
elongated pitch session, but you get paid for it.
PID controllers are apparently a hot area of interest and there are
software guys who will pay just to talk with someone who seems like
they've successfully implemented one.
Really??? I'll throw my hat in the ring. Successfully eh? I bet they got tripped up by the issues associated with discretization of an analog model. Yes, numbers in digital computers can and do roll over causing amusing results when integral windup all of a sudden becomes negative. Then there is always the sampling time jitter caused by numerous task scheduling and badly done scheduling analysis. Oh, we'll just throw a few digital filters at it...that just made it worse....lol yes, Nyquist criteria must be paid attention to....
There are a few fun corner cases: bumpless transfer, slew windup,
various bits saturating, nonlinearities, things like that.
The "d" part of PID is usually bad news.
Hmm where's Tim Wescott. He sorta showed me that there are times where
the D is paramount... Like the thermometers you stick in your mouth and they
give you the final temp based on the slope.
George H.