Digest for sci.electronics.repair@googlegroups.com - 3 updates in 2 topics

Les Cargill <lcargill99@comcast.com>: May 27 07:53PM -0500

Jon Elson wrote:
>> www.cricut.com
> Hmmm, well, the web site glosses over a bunch of stuff. First, NO MENTION
> whatsoever about HOW you get an image into the thing.
 
 
"Cricut Explore Air is the ultimate electronic cutting machine for DIY
projects and crafts with embedded Bluetooth® for wireless cutting. "
 
https://shop.cricut.com/en_us/machines/cricut-explore-air.html
 
The non-Air one makes no mention of how it is used. My guess is USB
because USB is roughly wired Bluetooth.
 
 
--
Les Cargill
Robert Roland <fake@ddress.no>: May 28 10:18AM +0200

On Fri, 27 May 2016 17:11:59 -0500, Jon Elson <jmelson@wustl.edu>
wrote:
 
>Does the thing
>just look like a printer or something?
 
A generalized term for this type of machine is a CSR, a Computerized
Signmaking Robot. A common use for them is to cut vinyl film to make
signs that can be stuck on cars, windows or anywhere else you like.
 
I once wrote a converter to convert HPGL to a CSR's propriety
language. Many machines accept HPGL directly. To the computer, they
will then look like a plotter. That means you must feed it vector
graphics. Bitmaps will need to go through a process called tracing
before you can output them to the cutter.
 
If I remember right, the knives were quite expensive.
 
If I were to buy a CSR, I would find out if it accepts a standard
language. If it does not, it will only work with the vendor's own
software, which may not suit your needs. I have seen software that had
its own proprietary format for fonts. You could not use TTF, and the
font packages were, of course, blindingly expensive.
--
RoRo
Jon Elson <jmelson@wustl.edu>: May 27 04:59PM -0500

Tim R wrote:
 
> Is that characteristic of an older electronic device, that it may develop
> some small leakage current over time. I can leave the battery out until I
> need it, but I'm curious.
I have a digital caliper that uses an MS76 cell. Seems to have the same
problem, battery used to last well over a year, now it lasts a few weeks,
maybe. I just take it out when not in use.
 
Jon
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Digest for sci.electronics.repair@googlegroups.com - 9 updates in 4 topics

Tim R <timothy42b@aol.com>: May 27 06:53AM -0700

I've had a Nikon 400 laser rangefinder for a number of years now, probably 10 to 12, something like that. We use it infrequently for measuring distance - how far did that Frisbee throw or golf shot go, how far away is that building, etc. It's very useful for sports, none of us hunt any more.
 
Originally a battery lasted at least couple of years. CR2s are about $10 each, so that wasn't bad.
 
Now it's a couple of weeks. They seem to discharge when not being used. Is that characteristic of an older electronic device, that it may develop some small leakage current over time. I can leave the battery out until I need it, but I'm curious.
"Mark Zacharias" <mark_zacharias@sbcglobal.net>: May 27 05:12AM -0500

"Bruce Esquibel" <bje@ripco.com> wrote in message
news:ni1fsb$1sc$1@remote5bge0.ripco.com...
> decks". A motor for everything, no belts.
 
> -bruce
> bje@ripco.com
 
 
Pretty sure it was direct drive capstan; with a belt from there to the reel
drive ass'y.
 
Could be wrong, sure, but I don't think I ever saw a JVC consumer unit with
a direct drive reel motor.
 
mz
N_Cook <diverse@tcp.co.uk>: May 26 09:28PM +0100

On 26/05/2016 20:16, Jon Elson wrote:
 
> One other area, can you feed it arbitrary drawings? How about Gerber files?
> (Yeah, I know, I'm asking a lot!!)
 
> Jon
 
The craft shop was next to a retail nursery supermarket, so I bought a
roll of copper slug tape, 30mm wide x.05mm ( apparently better than beer
or eggshells to deter slugs, think touching metal foil to a sensitive
tooth). I assume wider copper foil is available from elsewhere.
She said you could load any data , not necesssary to use their
propretary stuff
N_Cook <diverse@tcp.co.uk>: May 26 09:31PM +0100

On 26/05/2016 20:37, Jim Thompson wrote:
> patterns.
 
> I've been tempted to try that as an FeCl3 etch mask.
 
> ...Jim Thompson
 
She had examples of neatly cut leather about 3mm thick, so presumable
with correct offset for depth of cut , would work on this m/c
Jon Elson <jmelson@wustl.edu>: May 26 05:44PM -0500

N_Cook wrote:
 
 
> tooth). I assume wider copper foil is available from elsewhere.
> She said you could load any data , not necesssary to use their
> propretary stuff
Ah, so you stuck your own copper to the self-stick base material for the
machine, and then cut it! Wow, sounds very simple, and avoids paying Rogers
about $1 per square inch!
 
OK, I will have to tell my contact about this, it looks like a real solution
to a problem. Now, one little detail is how well the copper foil will stick
to the base material after a bunch of flexing, etc. if the copper starts to
come loose, combine that with Lithium 18650 batteries and we could have a
nice fire!
 
Jon
rickman <gnuarm@gmail.com>: May 26 11:06PM -0400

On 5/26/2016 4:31 PM, N_Cook wrote:
 
>> ...Jim Thompson
 
> She had examples of neatly cut leather about 3mm thick, so presumable
> with correct offset for depth of cut , would work on this m/c
 
What is an m/c?
 
--
 
Rick C
MJC <gravity@mjcoon.plus.com>: May 27 09:11AM +0100

> On 2016-05-26 04:06 rickman <gnuarm@gmail.com> wrote:
> What is an m/c?
 
It's a robot Master of Ceremonies, otherwise known as a Machine.
 
Mike.
Oren <Oren@127.0.0.1>: May 26 10:15AM -0700

On Thu, 26 May 2016 16:37:45 -0000 (UTC), Danny DiAmico
 
>But anyway, I'll let you know what happens when the board arrives and
>I put it in the washing machine. (The women folk are on my case.)
 
Maybe I could give a lesson on 'women folk on my case'. No Honey Do
List, it's a "dead line list". I made it through Tuesday (LMAO).
Tekkie® <Tekkie@comcast.net>: May 26 04:02PM -0400

Danny DiAmico posted for all of us...
 
 
 
> Lesson learned.
 
> But anyway, I'll let you know what happens when the board arrives and
> I put it in the washing machine. (The women folk are on my case.)
 
I would not wash the new board. Place it where the old board was. I would
collect $5 for every complaint. If they don't like that then tell them to go
to the stream with their rocks.
 
--
Tekkie
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Digest for sci.electronics.repair@googlegroups.com - 5 updates in 3 topics

Danny DiAmico <dannydiamico@yahoo.com>: May 26 04:37PM

On Mon, 23 May 2016 10:52:56 -0700, Oren wrote:
 
> Send the wife on a shopping spree to the local appliance store for a
> new unit that meets her fancy.
 
The latest update is that the Circuit Board Medics tried to screw me
(IMHO) so I told them to send me back everything.
 
Two days later they call me up (to their credit, they called both
days but I didn't bother to pick up the phone), and changed their tune.
9
So, at the moment, they're gonna send me back my original CCU and a
rebuilt MCU for $165 (plus my original $$20 or so to ship it to them).
 
In the end, it was a waste of time and money to go to the Circuit Board
Medics because for $191 + about 10% tax I could have gotten a brand
new MCU board locally in 1 day.
 
Lesson learned.
 
But anyway, I'll let you know what happens when the board arrives and
I put it in the washing machine. (The women folk are on my case.)
Danny DiAmico <dannydiamico@yahoo.com>: May 26 04:42PM

On Mon, 23 May 2016 16:28:06 -0400, Tekkie® wrote:
 
> I think the daughter should go too because she broke it and the $$$$
 
Sister.
 
Anyway, after telling the Circuit Board Medics to just send me
everything back, they decided to change their pricing back to what
they had originally told me.
 
They tried to talk me into a 40 dollar shipping but I refused,
since I was not happy with them changing their prices on me.
 
To be fair, they think they didn't change their price. I did.
 
They originally told me that it's OK if the board is burnt, as
long as it didn't have 'water damage'. I offered to send them
a picture beforehand, but they said they didn't need that.
 
Then, when they got the board, they tried to tell me they
couldn't use the core board, and at that point, they wanted
to charge me an additional hundred dollars. That would have
made the rebuilt replacement MORE expensive than a new board
(which is $191 at the local appliance shop).
 
I told them to send me everything back, and then they called
me up and changed their story back to what it originally was.
 
We'll see how this turns out, but, I can't really recommend
them at this point. In hindsight, the right answer would have
been to just pick up a NEW board for about $200 locally instead
of their rebuild for $165 + $20 shipping.
N_Cook <diverse@tcp.co.uk>: May 26 02:56PM +0100

I was in a craft shop today and one of these was being demonstrated
www.cricut.com
I got the demonstrator to try it out on 0.05mm thick copper foil. It
worked very well on parallel lines 0.3mm spacing and letters where the
vertical body of letters wer of qwerty were 2mm high and extra
curveyness of the "fun" script cut out and came through perfectly well.
It would have gone smaller I'm sure but that was the minimum she could
go to on her tablet and typeface.
She was so impressed she emailed a pic the engineering department of
that company.
Machine is roller feed of flat sheet. Requires firm , more than stick-it
note, bonding of the foil to a backing or the foil will tear. The cutter
was not new, a few months of about 22 hours a day use, often left
running overnight for multiple outputs, like 3D printer operation.
N_Cook <diverse@tcp.co.uk>: May 26 04:53PM +0100

On 26/05/2016 16:11, rickman wrote:
> 0.15 lines separated by 0.15 spaces. If it does that it would be useful
> for many types of prototypes. At 0.3 mm it's only good for relatively
> crude work on PCBs.
 
The penetrating score lines must be about .1mm wide,going by eye,
remember this was not a new cutter
Allodoxaphobia <knock_yourself_out@example.net>: May 25 05:27PM

On Wed, 25 May 2016 16:44:01 +0000, Sharp Guy wrote:
> unmounts it and can't locate the instructions manual. I am located in CT in
> postal zip code 06070.
 
> http://www.homeownershub.com/maintenance/wanted-used-defective-sharp-microwave-control-panels-r15-289458-.htm
 
"posted on February 20, 2008, 12:18 am"
 
I doubt, after 8 years, that Eric is still waiting to fix it.
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