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Electronics => Crowd Funded Projects => Topic started by: rthorntn on January 02, 2014, 11:08:22 am

Title: CRT clock
Post by: rthorntn on January 02, 2014, 11:08:22 am
Very cool, too pricey for me though:

http://www.kickstarter.com/projects/1474770115/oscilloscope-clock-kit/?ref=kicktraq (http://www.kickstarter.com/projects/1474770115/oscilloscope-clock-kit/?ref=kicktraq)
Title: Re: CRT clock
Post by: SpectrHz on January 02, 2014, 06:02:20 pm
I like it  ;D though I am a sucker for anything with an evacuated glass tube that glows, or gas filled, for nixies :) but this kit looks nice and well made when assembled, a little pricey but not too bad.
Title: Re: CRT clock
Post by: EEVblog on January 02, 2014, 08:16:39 pm
That's pricey for just a bare PCB kit.
Title: Re: CRT clock
Post by: DrLuke on January 02, 2014, 08:33:11 pm
Indeed, I had to look twice when I saw that price.
Title: Re: CRT clock
Post by: Kjelt on January 02, 2014, 10:38:35 pm
Friend of mine designed and built one last year, only with characters not the nice analog version. It can be difficult to get the nice small crt's , so first try to score those before you start.
Title: Re: CRT clock
Post by: dexters_lab on January 02, 2014, 11:04:06 pm
i might have been tempted but swmbo is getting me a nixie clock kit for my birthday >:D
Title: Re: CRT clock
Post by: GeoffS on January 02, 2014, 11:04:22 pm
A much cheaper option is this one:

http://web.jfet.org/vclk/ (http://web.jfet.org/vclk/)

PC board gerbers provided.
Title: Re: CRT clock
Post by: DonRon on January 02, 2014, 11:06:27 pm
And here is a German dealer:

http://www.die-wuestens.de/r5.htm (http://www.die-wuestens.de/r5.htm)

Title: Re: CRT clock
Post by: Kjelt on January 03, 2014, 12:04:05 am
That analog clock will terribly burn in the phosphor if it runs 24/7
Title: Re: CRT clock
Post by: DonRon on January 03, 2014, 12:11:17 am
That analog clock will terribly burn in the phosphor if it runs 24/7

Agree! That's the reason I did not buy one until today.
But I love the look of these clocks - looking really great.

Cheers and Happy new year,

Ronald
Title: Re: CRT clock
Post by: Kjelt on January 03, 2014, 01:03:11 am
They definitely look cool and retro  8)
Happy new year to you too.
Title: Re: CRT clock
Post by: SeanB on January 03, 2014, 01:33:51 am
I have a nice small TV CRT from a Sony viewfinder, wonder if I can use that magnetic system to make a clock, or does anybody want it.
Title: Re: Kickstarter: oscilloscope clock kit
Post by: TopLoser on January 03, 2014, 07:40:48 am
$145 on Kickstarter or $100 directly from his website....

http://www.oscilloscopeclocknixiecrt.com/Kit.htm (http://www.oscilloscopeclocknixiecrt.com/Kit.htm)

Hmmm... am I missing something?
Title: Re: Kickstarter: oscilloscope clock kit
Post by: Polossatik on January 04, 2014, 10:02:52 am
$145 on Kickstarter or $100 directly from his website....

http://www.oscilloscopeclocknixiecrt.com/Kit.htm (http://www.oscilloscopeclocknixiecrt.com/Kit.htm)

Hmmm... am I missing something?

$45 ?  8)

kickstarter one is supposed to be a "new" version with better psu (it at least is now advertised as 220v capable)

And here is a German dealer:

http://www.die-wuestens.de/r5.htm (http://www.die-wuestens.de/r5.htm)

damn that site hurts the eyes..
Title: Re: CRT clock
Post by: Stonent on January 04, 2014, 05:26:57 pm
Quote from: Assembly Instructions
Now unplug the power cord , and insert the IC marked 12f629 into socket U6.

Quote from: Assembly Instructions
Unplug the power again , and insert the chip marked "7528" ( 20 pin ) into U3, noting the proper orientation, and the biggest chip marked 18f26K20 into U1.

Do you really need 2 PICs for this?

Title: Re: CRT clock
Post by: c4757p on January 04, 2014, 05:57:57 pm
That PCB... (http://img.food.com/img/recipes/22/78/2/large/picrIZyXg.jpg) :wtf:

Oops, wrong picture (http://tinyurl.com/mgh5pwv)

Nope, think I've got it now. (https://s3.amazonaws.com/ksr/assets/001/476/346/f5f95245898b4d546a54e9c4ec7867ac_large.jpg?1388169309) >:D
Title: Re: CRT clock
Post by: Lurch on January 05, 2014, 02:38:45 am
That PCB... (http://img.food.com/img/recipes/22/78/2/large/picrIZyXg.jpg) :wtf:

Oops, wrong picture (http://tinyurl.com/mgh5pwv)

Nope, think I've got it now. (https://s3.amazonaws.com/ksr/assets/001/476/346/f5f95245898b4d546a54e9c4ec7867ac_large.jpg?1388169309) >:D

No, ITYM this one. (http://www.tamvalleydepot.com/images/600_hex_juicer_P3107914.jpg)
Title: Re: CRT clock
Post by: calexanian on January 05, 2014, 11:41:53 am
How long before just a plain old analog clock will be considered "Bring Back" worthy? I remember the first time a kid asked me to read a analog clock for her... We have lost as a society...
Title: Re: CRT clock
Post by: GK on January 05, 2014, 02:03:19 pm
Looks to me like a good way to burn up rare cathode ray tubes. Maybe a switch could be incorporated to cut off the cathode current when you're not home?
I have a nice collection of DG7-32, 2AP1's and a couple dozen other CRT's ranging 1" diameter at about 5" diameter. Don't think I'll be making a clock out of any of them.
Title: Re: CRT clock
Post by: Legit-Design on January 05, 2014, 03:42:04 pm
I think these clocks need screensavers. Maybe a bouncing clock like in the old days?
Title: Re: CRT clock
Post by: Stonent on January 05, 2014, 05:05:00 pm
I think these clocks need screensavers. Maybe a bouncing clock like in the old days?

Flying Toasters!
Title: Re: CRT clock
Post by: Kjelt on January 06, 2014, 02:27:51 am
With a motor physically rotate the CRT from left to right  8)
Title: Re: CRT clock
Post by: snoopy on January 06, 2014, 03:21:58 pm
That PCB... (http://img.food.com/img/recipes/22/78/2/large/picrIZyXg.jpg) :wtf:

Oops, wrong picture (http://tinyurl.com/mgh5pwv)

Nope, think I've got it now. (https://s3.amazonaws.com/ksr/assets/001/476/346/f5f95245898b4d546a54e9c4ec7867ac_large.jpg?1388169309) >:D

I was going to say something about this but I didn't want to rain on his parade.

It looks like he got his 5 yo to lay it out or maybe it's someone who used to use Bishop graphics back in  the 70's and this is his first entry into pcb layout using software.

Anyway you've got to give him points for trying. I like to see people having a go ;)
Title: Re: CRT clock
Post by: daveatol on January 06, 2014, 11:12:02 pm
I remember the first time a kid asked me to read a analog clock for her... We have lost as a society...
I know a few of 20 and 30 year olds that can't read a clock, or have to count around the hour marks with their finger.
Title: Re: CRT clock
Post by: rolycat on January 07, 2014, 05:39:08 am
I remember the first time a kid asked me to read a analog clock for her... We have lost as a society...
I know a few of 20 and 30 year olds that can't read a clock, or have to count around the hour marks with their finger.

Reminds me of an old Dave Allen sketch where he tries to teach a child to read a clock:

Quote
Now, there are three pointers, called hands. The first hand is the hour hand, the second hand is the minute hand, and the third hand is the second hand...

So, its twelve o'clock, and the hands are at the top. Then the minute hand moves round until it reaches the one. That one is five. Two is ten, three is fifteen, four is twenty, five is twenty-five, six is a half...

Now, be a good boy and learn how to read the clock, and I'll buy you a digital watch.
Title: Re: CRT clock
Post by: snoopy on January 07, 2014, 11:39:55 am
Looks to me like a good way to burn up rare cathode ray tubes. Maybe a switch could be incorporated to cut off the cathode current when you're not home?
I have a nice collection of DG7-32, 2AP1's and a couple dozen other CRT's ranging 1" diameter at about 5" diameter. Don't think I'll be making a clock out of any of them.

well when it does burn in you'll be able to use the clock without power and it will be right twice a day  :-DD
Title: Re: CRT clock
Post by: dexters_lab on January 11, 2014, 01:57:52 am
the software could gradually move the clock display around within the crt to reduce burn-in

Title: Re: CRT clock
Post by: SolarSunrise on January 17, 2014, 04:48:54 am
In the CRT Clock Kickstarter, the PCB looks so ugly I cannot look at it. Why can't people stick to tracks with an angle of pi/4? Why have bunch of different angles... Can anybody explain?