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donutty
Joined: 16 Feb 2008
Posts: 1122
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 Posted: Fri Jul 24, 2009 12:45 pm Post subject: |
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From looking at the first proto I'd call it.... spaghetti 
Ever thought about fitting a relay (and transistor of course) to the 1hz pulse so you get that good old 'tick tock' sound?
You gotta call it something grand, like an old ocean liner or a fighter jet. Just look up some greek gods
Chronos (obvious)
Aeon (you can joke that it took aeons to build)
Nyx (goddess of the night, a take on 'nixie')
You get the idea... |
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kosmokrator
Joined: 03 Jul 2008
Posts: 4085
Location: Athens-GR
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| Posted: Fri Jul 24, 2009 12:50 pm Post subject: |
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| donutty wrote: |
You gotta call it something grand, like an old ocean liner or a fighter jet. Just look up some greek gods
Chronos (obvious)
Aeon (you can joke that it took aeons to build)
Nyx (goddess of the night, a take on 'nixie')
You get the idea... |
i like the Greek ancients Gods story-Names...
how i dint thought this?
donutty u are Greek ancient history lover?  |
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donutty
Joined: 16 Feb 2008
Posts: 1122
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| Posted: Fri Jul 24, 2009 3:04 pm Post subject: |
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| kosmokrator wrote: | | donutty wrote: |
You gotta call it something grand, like an old ocean liner or a fighter jet. Just look up some greek gods
Chronos (obvious)
Aeon (you can joke that it took aeons to build)
Nyx (goddess of the night, a take on 'nixie')
You get the idea... |
i like the Greek ancients Gods story-Names...
how i dint thought this?
donutty u are Greek ancient history lover? |
Nah, not really.. but they got all the cool names |
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Neon
Joined: 04 Feb 2008
Posts: 1512
Location: Dallas, Texas, USA
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| Posted: Fri Jul 24, 2009 3:49 pm Post subject: |
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Well I like your first option. Less is often more, but if you need to give it a name, how about, "Now:"
-- at least it wouldn't take you long to label it.  |
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johnorun
Joined: 04 Apr 2008
Posts: 3364
Location: Chicago, IL- US
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JAC
Joined: 24 Jul 2005
Posts: 3469
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| Posted: Sat Jul 25, 2009 12:30 pm Post subject: |
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| kosmokrator wrote: | what use for timer/clock count?
mcu? or other solution? fpga? or all is on custom ttl logic ?
nice output btw...keeep it up! |
Thank you. 
A Microchip PIC is at the heart of the clock. Totally overkill on the PIC, but it was a free sample from Microchip ( they stopped free samples a while ago).
The time signal receiver and ferrite I took from a very cheap radio controlled clock.
A Dallas RTC with backup battery keeping time. The RTC provides the timebase on interrupt. Most of the time my software is just waiting for interrupt to increment next count.
The tube slave boards are microchip port expanders on SPI bus. So 5 lines of output from the PIC gives me control over 16 tubes, with the possibility of driving 16 segments on each slave board. ( 5 lines of output to 128 individual outputs is a good deal) ( I mentioned earlier I designed the boards to work with other tubes.. I had in mind the alphanumeric tubes, some of them need individual current drive to each segment). With an additional extra output I can uniquely drive another 64 outputs, so the design is totally scaleable.
Every segment is direct drive. No multiplexing. ( So no multiplexing problems with driving large numbers of tubes and also the individual segment drive requirements)
| donutty wrote: | From looking at the first proto I'd call it.... spaghetti
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To be fair that was not the original, they were circuit fragments left over from the very first design. .. still.. after a while breadboard does become spaghetti. It is the way of things, like the sun rising tomorrow.
| donutty wrote: |
Ever thought about fitting a relay (and transistor of course) to the 1hz pulse so you get that good old 'tick tock' sound?
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A tick-tock sound is an option. . I have plenty of code space, all I need to use is one output to drive a speaker and make my own sounds. I am a little away from being able to use SD cards and playing MP3.
| donutty wrote: |
You gotta call it something grand, like an old ocean liner or a fighter jet. Just look up some greek gods
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I am looking at all names, thank you to everyone with all the suggestions..... I think I'll know the one that fits when I have it in the case.. I'll draft up some artwork and see what works.
| Neon wrote: | Well I like your first option. Less is often more, but if you need to give it a name, how about, "Now:"
at least it wouldn't take you long to label it. |
“ NOW “ … is a very good idea. I have to check it doesn’t mean something like “ I like to eat goat testicles” in another language.
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donutty
Joined: 16 Feb 2008
Posts: 1122
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| Posted: Sat Jul 25, 2009 3:43 pm Post subject: |
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| JAC wrote: | From looking at the first proto I'd call it.... spaghetti Smile
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Yeah I know mate... I made a simple HH:MM clock using just TTL and it looked like I'd been to my local italian restaurant! |
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