I don't know if anyone remembers, but I was making a propellor clock for
the flight ops staff at the aero club as appreciation for all the help
they gave to get my license.
I wanted to keep external things like buttons "inside" so I tried to use
the touch switch idea on Byte Crafts page but I couldn't get it to work
reliably. I ended up using a couple of QT110 sensors from Q-Prox. You
can see in the image below that to set the time or run the clock only
requires that you touch the front glass panel where indicated.
For something that I though would take a week or so has taken about 5.
It is nearly finished thank goodness, here is a gif of the project so
far if anyone is interested.
"Robert E. Griffith" wrote:
>
> Nice woodwork. Which took longer, the case or electronics?
>
> I would like to see a picture of it in action.
>
> --BobG
It was a waste of money to build a box. By the time I bought special
router bits, timber, glass cut to size, stain and varnish, well.. you
get the picture. It was much cheaper to buy and modify one to suit,
although it took some time to find one.
I must have come in the middle of this thread.
What is a propeller clock?
> >As part of my circuit, I used a relay to convert a full wave rectified
> >AC input to a half wave to detect when the "time set" switch is pressed.
> >This is just a series diode being switched in and out of a leg of the AC
> >path to the full wave rectifier.
> >
> >Is there a way to do this without a relay?
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Briefly, it's a clock with a novel kind of display formed by LEDs on a
rotating circuit board. For more information, visit Bob' site
(http://www.bobblick.com) which explains in detail how to build one.
This is a mechanically challenging project and others have come up with
different designs and features. In Bob's site you will find links to some of
the other sites that discuss propeller clocks.
part 1 872 bytes content-type:text/plain; (decoded 7bit)
> Briefly, it's a clock with a novel kind of display formed by LEDs on a
> rotating circuit board. For more information, visit Bob' site
> (http://www.bobblick.com) which explains in detail how to build one.
>
> This is a mechanically challenging project and others have come up with
> different designs and features. In Bob's site you will find links to some
of
> the other sites that discuss propeller clocks.
And here's a picture of another variation on the same theme that we
developed for a customer. This unit can repeatedly scroll thru a message up
to 4000 characters long. The message can be set from the host or via the IR
keyboard shown. It can also display a continuous message from the host.
Many of these units can be connected together and controlled independently
from a single serial port on the host.
part 2 16681 bytes content-type:image/jpeg; (decode) part 3 318 bytes
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Embed Inc, embedded system specialists in Littleton Massachusetts
(978) 742-9014, http://www.embedinc.com
Thanks Bala. I was guessing that is what a propeller clock is. Has anyone
considered a small photocell/rechargeable battery for power and an IR link
for control? Would replace the slip ring problems with low power
consumption considerations. {Quote hidden}
> >
> > I must have come in the middle of this thread.
> > What is a propeller clock?
>
> Briefly, it's a clock with a novel kind of display formed by LEDs on a
> rotating circuit board. For more information, visit Bob' site
> (http://www.bobblick.com) which explains in detail how to build one.
>
> This is a mechanically challenging project and others have come up with
> different designs and features. In Bob's site you will find links
> to some of
> the other sites that discuss propeller clocks.
>
> Regards,
> Bala
>
> --
> http://www.piclist.com hint: The list server can filter out subtopics
> (like ads or off topics) for you. See http://www.piclist.com/#topics
>
>
>And here's a picture of another variation on the same theme that we
>developed for a customer.
Olin - where can I find a source for the keyboard shown in your photo? It
looks to be just the right size for an installation I need to do. I only
need a couple of them . . .
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> Olin - where can I find a source for the keyboard shown in your photo? It
> looks to be just the right size for an installation I need to do. I only
> need a couple of them . . .
They are made in China and aren't available in small quantities. Perhaps
someone resells them, but I don't know that. Sorry.
*****************************************************************
Embed Inc, embedded system specialists in Littleton Massachusetts
(978) 742-9014, http://www.embedinc.com
Look at http://www.cyberguys.com for a mini keyboard.
I buy them for automated test equipment I build.
They can fit inside of a small rack mount drawer, some
have built in trackballs, they're great.
> And here's a picture of another variation on the same theme that we
> developed for a customer. This unit can repeatedly scroll thru a message
up
> to 4000 characters long. The message can be set from the host or via the
IR
> keyboard shown. It can also display a continuous message from the host.
> Many of these units can be connected together and controlled independently
> from a single serial port on the host.
Your display unit has impressive specs and looks, Olin!
Like many others, I will be happy to learn more about this "EyeBall" display
provided it doesn't affect your commercial interests.
> Your display unit has impressive specs and looks, Olin!
Thanks.
> Like many others, I will be happy to learn more about this "EyeBall"
display
> provided it doesn't affect your commercial interests.
Like what? I'm not going to release code or get into too many details about
a customer's product, but there is no harm in asking questions whether I can
answer them or not.
You can see what the customer says about themselves at http://www.newscanner.com. Click on ENTER then on EyeBall.
*****************************************************************
Embed Inc, embedded system specialists in Littleton Massachusetts
(978) 742-9014, http://www.embedinc.com
bubblesoftonline.com
