STAMP Circuit Needed - Paying $

J

Joe

Guest
Hi:

I in need of someone to design a fairly basic circuit explained below.
If you can design it, please email me a price quote. I think a
programmed STAMP type circuit is needed, but feel free to quote
whatever you think would work best for the requirements listed.

Here is what I need:

1. I plan to use 2 photoelectric cells and a stepper motor. Lets call
the photoelectric cells X1 and X2.

2. The circuit needs to constantly compare the voltage between X1 and
X2 and if X1 is higher than X2 then move stepper motor
counterclockwise. If voltage X2 is higher than X1 then move motor
clockwise. If the difference between voltage X1 and X2 is almost the
same (within a certain range) then do nothing. I am not sure what the
proper 'range' is yet for my needs. So this 'range' must be able to
be adjusted by me as the project progresses.

If you can design such a circuit and explain to me in English how to
build it (I can't read electronic schematics that well) then please
email me a price quote.

Or, if you know where I may find such a circuit already designed, or
if you know someone who can design it, such information would be
greatly appreciated also.

Thank you,

Joe Gayetty
Reno, PA
jgaiety@gmail.com
 
And furthermore:

(Dodges hail of rotting tomatoes.)

If you are going through with your original plan, I would
suggest dealing locally. With someone who can come over
and see what is going on and how it needs fixing.

Check the local university and hire a Junior year EE student.
They are usually smart, they work cheap (<< $135/hr) and they
need the money. Oh, and get one who has a ham license /
rebuilds car engines / worked construction ... Do not hire
a double major in French literature -- there are lots of
engineering students who shouldn't be.

--
Nicholas O. Lindan, Cleveland, Ohio
Consulting Engineer: Electronics; Informatics; Photonics.
Remove spaces etc. to reply: n o lindan at net com dot com
 
"Tim Wescott" <tim@wescottnospamdesign.com> wrote

there are plenty of new graduates who would grab the
hot end of a soldering iron if you let them.
Click to expand...
Grab it many times, in fact -- six-sigma statistical
significance, you know.

--
Nicholas O. Lindan, Cleveland, Ohio
Consulting Engineer: Electronics; Informatics; Photonics.
Remove spaces etc. to reply: n o lindan at net com dot com
 
Nicholas O. Lindan wrote:

"Tim Wescott" <tim@wescottnospamdesign.com> wrote


there are plenty of new graduates who would grab the
hot end of a soldering iron if you let them.


Grab it many times, in fact -- six-sigma statistical
significance, you know.

I had a favorite uncle who inspired me to be an EE. He used to be a
Click to expand...
project manager for Boeing; when he interviewed prospective electrical
engineers he'd casually hold out a (cold) soldering iron to the
candidate business end first and say "here". Anyone who didn't
carefully reach _around_ the tip to grab the handle in the approved
manner didn't pass the test.

--

Tim Wescott
Wescott Design Services
http://www.wescottdesign.com
 
"Tim Wescott" <tim@wescottnospamdesign.com> wrote in message

...but there are plenty of new
graduates who would grab the hot end of a soldering iron if you let them.
Click to expand...
Not plesant!!!
And by the way I can note that hang-overs is a strange (evil!) thing: Your
reflexes /can/ be good enough to grab a falling object. But they might not
be very efficient in letting go again - which might lead to additional pain
(adding to the hangovers)...

/Anders (who will deny any claims of the above facts being based on personal
experience ;-)
 
A picaxe-18x chip would do that handsomely and cost much less than the
stamp. You will find stepper motor routines, driver circuits, etc. on the
Internet.
 
On Tue, 23 Nov 2004 12:01:20 -0800, the renowned Tim Wescott
<tim@wescottnospamdesign.com> wrote:

Nicholas O. Lindan wrote:

"Tim Wescott" <tim@wescottnospamdesign.com> wrote


there are plenty of new graduates who would grab the
hot end of a soldering iron if you let them.


Grab it many times, in fact -- six-sigma statistical
significance, you know.

I had a favorite uncle who inspired me to be an EE. He used to be a
project manager for Boeing; when he interviewed prospective electrical
engineers he'd casually hold out a (cold) soldering iron to the
candidate business end first and say "here". Anyone who didn't
carefully reach _around_ the tip to grab the handle in the approved
manner didn't pass the test.
Click to expand...
So he wanted people who would follow the approved "rules", whether the
iron was hot or not?
 
Spehro Pefhany wrote:

On Tue, 23 Nov 2004 12:01:20 -0800, the renowned Tim Wescott
tim@wescottnospamdesign.com> wrote:


Nicholas O. Lindan wrote:


"Tim Wescott" <tim@wescottnospamdesign.com> wrote



there are plenty of new graduates who would grab the
hot end of a soldering iron if you let them.


Grab it many times, in fact -- six-sigma statistical
significance, you know.


I had a favorite uncle who inspired me to be an EE. He used to be a
project manager for Boeing; when he interviewed prospective electrical
engineers he'd casually hold out a (cold) soldering iron to the
candidate business end first and say "here". Anyone who didn't
carefully reach _around_ the tip to grab the handle in the approved
manner didn't pass the test.


So he wanted people who would follow the approved "rules", whether the
iron was hot or not?

No, he wanted folk who were smart enough to not grab a soldering iron by
Click to expand...
the tip when they didn't know whether it was hot or not.

Sometimes he'd just ask if they knew what it was.

--

Tim Wescott
Wescott Design Services
http://www.wescottdesign.com
 
On Tue, 23 Nov 2004 18:53:01 +0000, Nicholas O. Lindan wrote:

And furthermore:

(Dodges hail of rotting tomatoes.)
Click to expand...
And maybe we can set up an internship program for disadvantaged students,
to pull that big stick out of your ass.
--
The Pig Bladder From Uranus, still waiting for
some hot babe to ask what my favorite planet is.
 
Rhett Auricle wrote:

Are there really people who are that stupid? Maybe we should employ all of
them as dangerous equipment operators.
Click to expand...
Not stupid, just folks who've never seen a soldering iron. For some
reason he felt that an EE who couldn't even recognize a soldering iron
didn't have a place on his team.

--

Tim Wescott
Wescott Design Services
http://www.wescottdesign.com
 
"Rhett Auricle" <rhett@example.com> wrote in message
The polite way to hand someone a soldering iron is to hold it
by the hot end yourself.

But the grown-up way is to put it in its stand and step back from the
bench.
Click to expand...
Of course you would never let an potential imbecile touch your soldering
iron... ;-)

/A
 
Joe wrote:
Hi:

I in need of someone to design a fairly basic circuit explained below.
If you can design it, please email me a price quote. I think a
programmed STAMP type circuit is needed, but feel free to quote
whatever you think would work best for the requirements listed.

Here is what I need:

1. I plan to use 2 photoelectric cells and a stepper motor. Lets call
the photoelectric cells X1 and X2.

2. The circuit needs to constantly compare the voltage between X1 and
X2 and if X1 is higher than X2 then move stepper motor
counterclockwise. If voltage X2 is higher than X1 then move motor
clockwise. If the difference between voltage X1 and X2 is almost the
same (within a certain range) then do nothing. I am not sure what the
proper 'range' is yet for my needs. So this 'range' must be able to
be adjusted by me as the project progresses.

If you can design such a circuit and explain to me in English how to
build it (I can't read electronic schematics that well) then please
email me a price quote.

Or, if you know where I may find such a circuit already designed, or
if you know someone who can design it, such information would be
greatly appreciated also.

Thank you,

Joe Gayetty
Reno, PA
jgaiety@gmail.com
Click to expand...
Google some solar power sites.
They use a similar system for sun tracking.

If you're as experienced with electronics as you appear to be,
you probably need a local collaborator. A long-distance circuit
designer will probably result in much expense and grief for you.
mike

--
Return address is VALID.
500MHz Tek DSOscilloscope TDS540 $2200
http://nm7u.tripod.com/homepage/te.html
Wanted, 12.1" LCD for Gateway Solo 5300. Samsung LT121SU-121
Bunch of stuff For Sale and Wanted at the link below.
http://www.geocities.com/SiliconValley/Monitor/4710/
 
Nicholas O. Lindan wrote:

And furthermore:

(Dodges hail of rotting tomatoes.)

If you are going through with your original plan, I would
suggest dealing locally. With someone who can come over
and see what is going on and how it needs fixing.

Check the local university and hire a Junior year EE student.
They are usually smart, they work cheap (<< $135/hr) and they
need the money. Oh, and get one who has a ham license /
rebuilds car engines / worked construction ... Do not hire
a double major in French literature -- there are lots of
engineering students who shouldn't be.

I'll stress what Nick has to say about experience: Get someone who has
Click to expand...
actually _built_ something that _works_, preferably before they went
into their EE program. Having presided over lab classes as a grad
student, and having hired and trained engineers, I can vouch for the
fact that you can get straight-A's in an engineering program with hard
work and precious little practical ability. I went into my EE program
with fairly advanced hobbyist skills so I came out ready to land on my
feet and start running at my first job, but there are plenty of new
graduates who would grab the hot end of a soldering iron if you let them.

Doing this remotely can be done, but you have to sign up for the
overhead (possibly involving shipping your motors, sensors, etc.,
around). There are plenty of people on this list who will assure you it
can be done, and it can. On the other hand I'm sitting 5 feet away from
some client equipment that I couldn't work without, and I'm working with
another client who's 2000 miles away and held back right now because his
equipment really needs a laying on of hands and I can't just drive over
and do it.

--

Tim Wescott
Wescott Design Services
http://www.wescottdesign.com
 
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