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Sci.Electronics.Basics -> turn your expensive oscilloscope into a $5 clock

There are 43 messages in this thread.
You are currently looking at messages 1 to 20.






Author: BrunoG
Date: 11:07 02-11-07


Hi,

Here is my suggestion to turn your oscilloscope into a clock with a PIC a 4
resistors :
http://www.micro-examples.com/public/microex-navig/doc/082-pic-oscillo-clock

I'm opened to your destructive comments :)

Bruno



Author: Tim Shoppa
Date: 11:31 02-11-07

On Nov 2, 11:07 am, "BrunoG" <nore...@micro-examples.com> wrote:
> Hi,
>
> Here is my suggestion to turn your oscilloscope into a clock with a PIC a 4
> resistors :http://www.micro-examples.com/public/microex-navig/doc/082-pic-oscill...
>
> I'm opened to your destructive comments :)

I remember hacking 6800 assembly code as a kid and tweaking R's and
C's in my ramp generator until I had spelled out my name on the scope
screen :-).

Somewhere on the world-wide-interweb is a 50's era article that shows
how to synthesize some very nicely rendered digits onto a X-Y display
using sine/cosine waves and harmonics.

Tim.


Author: Bill Chernoff
Date: 11:39 02-11-07

Check this out:
http://www.sparkfun.com/commerce/product_info.php?products_id=8488#



Date: 11:50 02-11-07


"BrunoG" <noreply@micro-examples.com> writes:
> http://www.micro-examples.com/public/microex-navig/doc/082-pic-oscillo-clock

Your schematic has +5v connected directly to GND.

The project itself is cool, though.

Author: Joel Koltner
Date: 12:08 02-11-07

"Bill Chernoff" <bill@star-techno.com> wrote in message
news:rwHWi.168442$1y4.18486@pd7urf2no...
> Check this out:
> http://www.sparkfun.com/commerce/product_info.php?products_id=8488#

Very nice... good use for that old Tek 2465B when you're not using it for Real
Work! (Granted, someone like Joerg might suggest that the ratio of how often
you use a 2465B to a digital 'scope tells you something about how good you are
at circuit troubleshooting... :-) )



Author: BrunoG
Date: 12:09 02-11-07

"DJ Delorie" <dj@delorie.com> a écrit dans le message de news:
xnabpw7il3.fsf@delorie.com...
>
> "BrunoG" <noreply@micro-examples.com> writes:
>> http://www.micro-examples.com/public/microex-navig/doc/082-pic-oscillo-clock
>
> Your schematic has +5v connected directly to GND.
>
> The project itself is cool, though.

Well spotted !
I should have named the topic "how to turn your expensive power supply into
carbon".
Schematic has been corrected ;-)

Thanks !

Bruno



Date: 12:17 02-11-07

On Nov 2, 11:50 am, DJ Delorie <d...@delorie.com> wrote:
> "BrunoG" <nore...@micro-examples.com> writes:
> >http://www.micro-examples.com/public/microex-navig/doc/082-pic-oscill...
>
> Your schematic has +5v connected directly to GND.

Where?

> The project itself is cool, though.



Date: 12:17 02-11-07

On Nov 2, 12:09 pm, "BrunoG" <nore...@micro-examples.com> wrote:
> "DJ Delorie" <d...@delorie.com> a =E9crit dans le message de news:
> xnabpw7il3....@delorie.com...
>
>
>
> > "BrunoG" <nore...@micro-examples.com> writes:
> >>http://www.micro-examples.com/public/microex-navig/doc/082-pic-oscill...
>
> > Your schematic has +5v connected directly to GND.
>
> > The project itself is cool, though.
>
> Well spotted !
> I should have named the topic "how to turn your expensive power supply in=
to
> carbon".
> Schematic has been corrected ;-)
>
> Thanks !
>
> Bruno

Ah.


Author: Deep Reset
Date: 12:44 02-11-07

"BrunoG" <noreply@micro-examples.com> wrote in message
news:472b3d4d$0$25942$ba4acef3@news.orange.fr...
> Hi,
>
> Here is my suggestion to turn your oscilloscope into a clock with a PIC a
> 4 resistors :
> http://www.micro-examples.com/public/microex-navig/doc/082-pic-oscillo-clock
>
> I'm opened to your destructive comments :)
>
> Bruno

Reminds me of a late '70s Byte project for Space War (gravity and
everything!) on a 'scope using an 8080.
[scuttles off to dig out code and see if it is feasible to translate to PIC
asm]



Author: Walter Banks
Date: 13:21 02-11-07

Well done.. Nice U Tube Video support

Fun is good

Regards

--
Walter Banks
Byte Craft Limited
Tel. (519) 888-6911
Fax (519) 746 6751
http://www.bytecraft.com
walter@bytecraft.com


BrunoG wrote:

> Hi,
>
> Here is my suggestion to turn your oscilloscope into a clock with a PIC a 4
> resistors :
> http://www.micro-examples.com/public/microex-navig/doc/082-pic-oscillo-clock
>
> I'm opened to your destructive comments :)
>
> Bruno


Author: msg
Date: 13:52 02-11-07

Tim Shoppa wrote:

> On Nov 2, 11:07 am, "BrunoG" <nore...@micro-examples.com> wrote:
>
>>Hi,
>>
>>Here is my suggestion to turn your oscilloscope into a clock with a PIC a 4
>>resistors
:http://www.micro-examples.com/public/microex-navig/doc/082-pic-oscill...
>>
>>I'm opened to your destructive comments :)
>
>
> I remember hacking 6800 assembly code as a kid and tweaking R's and
> C's in my ramp generator until I had spelled out my name on the scope
> screen :-).
>
> Somewhere on the world-wide-interweb is a 50's era article that shows
> how to synthesize some very nicely rendered digits onto a X-Y display
> using sine/cosine waves and harmonics.
>

There was a nice article in the Proceedings of the IRE from the '50s
about doing just that -- it was a lot like a QEX article from more
recent times.

Regards,

Michael

Author: Guy Macon
Date: 14:06 02-11-07




Sorry, I was too busy using a $10,000.00 computer to replace
a 99 cent pack of playing cards while playing solitaire...

--
Guy Macon
<http://www.guymacon.com/>;


Author: Tim Williams
Date: 18:01 02-11-07

I ran a WAV of something like that on my oscilloscope. Too bad my
soundcard is crummy.

http://www.youtube.com/watch?v=9FLAEF_qsXs

Tim

--
Deep Fryer: A very philosophical monk.
Website @ http://webpages.charter.net/dawill/tmoranwms

"BrunoG" <noreply@micro-examples.com> wrote in message
news:472b3d4d$0$25942$ba4acef3@news.orange.fr...
> Hi,
>
> Here is my suggestion to turn your oscilloscope into a clock with a PIC a
4
> resistors :
>
http://www.micro-examples.com/public/microex-navig/doc/082-pic-oscillo-cloc
k
>
> I'm opened to your destructive comments :)
>
> Bruno
>
>



Author: StoneThrower
Date: 19:12 02-11-07

Nice.
Hat down.

--
=^.^=
StoneThrower

"Bill Chernoff" <bill@star-techno.com> wrote in message
news:rwHWi.168442$1y4.18486@pd7urf2no...
> Check this out:
> http://www.sparkfun.com/commerce/product_info.php?products_id=8488#
>
>


Author: Jamie
Date: 19:16 02-11-07

DJ Delorie wrote:

> "BrunoG" <noreply@micro-examples.com> writes:
>
>>http://www.micro-examples.com/public/microex-navig/doc/082-pic-oscillo-clock
>
>
> Your schematic has +5v connected directly to GND.
>
> The project itself is cool, though.
Look again.
it's not to ground, or at least when I looked at it it wasn't.


--
"I'm never wrong, once i thought i was, but was mistaken"
Real Programmers Do things like this.
http://webpages.charter.net/jamie_5


Author: Don Bowey
Date: 21:46 02-11-07

On 11/2/07 4:16 PM, in article OkNWi.130$474.60@newsfe06.lga, "Jamie"
<jamie_ka1lpa_not_valid_after_ka1lpa_@charter.net> wrote:

> DJ Delorie wrote:
>
>> "BrunoG" <noreply@micro-examples.com> writes:
>>
>>>
http://www.micro-examples.com/public/microex-navig/doc/082-pic-oscillo-clock
>>
>>
>> Your schematic has +5v connected directly to GND.
>>
>> The project itself is cool, though.
> Look again.
> it's not to ground, or at least when I looked at it it wasn't.
>

It sure looks like it's tied to ground.

Maybe you should reconsider this AND coupling capacitors.



Date: 00:06 03-11-07

On Nov 3, 12:46 pm, Don Bowey <dbo...@comcast.net> wrote:
> On 11/2/07 4:16 PM, in article OkNWi.130$474...@newsfe06.lga, "Jamie"
>
> <jamie_ka1lpa_not_valid_after_ka1l...@charter.net> wrote:
> > DJ Delorie wrote:
>
> >> "BrunoG" <nore...@micro-examples.com> writes:
>
>
>>>http://www.micro-examples.com/public/microex-navig/doc/082-pic-oscill...
>
> >> Your schematic has +5v connected directly to GND.
>
> >> The project itself is cool, though.
> > Look again.
> > it's not to ground, or at least when I looked at it it wasn't.
>
> It sure looks like it's tied to ground.
>
> Maybe you should reconsider this AND coupling capacitors.

I think you will find the small schematic on the page does have the
power supply short.
When you click it for the enlargement, you get the corrected version.
Depending on your age and your monitor the one directly on the page is
difficult to see if it is correct or not.


Author: Arie de Muynck
Date: 05:41 03-11-07


"BrunoG" <noreply@micro-examples.com> wrote
>
> Here is my suggestion to turn your oscilloscope into a clock with a PIC a
> 4 resistors :
> http://www.micro-examples.com/public/microex-navig/doc/082-pic-oscillo-clock
>
> I'm opened to your destructive comments :)

Neat design, generating text in Y/T mode.

Let's be constructive:

With a small SW change you could put a needle ('invisible') pulse in each
image trace at the point in time where the scope should start, the scope
should be able to trigger on that. Just have enough time between images so
the scope hold off time has finished (normally not more than 10..20% of the
sweep time).
For most scopes this removes the need for the trigger cable (which still
makes thinks look as if you are doing X-Y control). For rotten scopes one
could still connect the old trigger output.

Regards,
Arie de Muynck







Author: redbelly
Date: 10:28 03-11-07

On Nov 2, 11:07 am, "BrunoG" <nore...@micro-examples.com> wrote:
> Hi,
>
> Here is my suggestion to turn your oscilloscope into a clock with a PIC a 4
> resistors :http://www.micro-examples.com/public/microex-navig/doc/082-pic-oscill...
>
> I'm opened to your destructive comments :)
>
> Bruno

Neat.

Could one make the 4th "unused" voltage level something out of range
of the display, so that the extra lines are not visible?

Mark


Author: John Larkin
Date: 15:14 03-11-07

On Fri, 2 Nov 2007 16:07:58 +0100, "BrunoG"
<noreply@micro-examples.com> wrote:

>Hi,
>
>Here is my suggestion to turn your oscilloscope into a clock with a PIC a 4
>resistors :
>http://www.micro-examples.com/public/microex-navig/doc/082-pic-oscillo-clock
>
>I'm opened to your destructive comments :)
>
>Bruno
>

Our expensive scopes already have time-of-day clocks.

John


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