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The new Random Pictures Thread:

TomD

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USS North Carolina docked at Wilmington, NC., photo taken in 2005.

These guns are 16 x 45, meaning 16 inches in diameter and 45 calibers (16") long, 60 feet. Approximately 500 pounds of propellant would push a 2700 pound shell over 20 miles. Each gun (of 9) weighed just shy of 1/4 of a million pounds just for the barrel and breech. Later versions of this gun as were installed in the Iowa Class battleships were 16 x 50 and had somewhat improved performance.

USS Washington, an identical sister ship of of the North Carolina, took part in the last battleship vs battleship gun battle in history, sinking the Japanese battleship, Kirishima in the second naval battle of Guadalcanal in mid-November 1942.

USS North Carolina by Tom, on Flickr
 

Tbonz

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USS North Carolina docked at Wilmington, NC., photo taken in 2005.

These guns are 16 x 45, meaning 16 inches in diameter and 45 calibers (16") long, 60 feet. Approximately 500 pounds of propellant would push a 2700 pound shell over 20 miles. Each gun (of 9) weighed just shy of 1/4 of a million pounds just for the barrel and breech. Later versions of this gun as were installed in the Iowa Class battleships were 16 x 50 and had somewhat improved performance.

USS Washington, an identical sister ship of of the North Carolina, took part in the last battleship vs battleship gun battle in history, sinking the Japanese battleship, Kirishima in the second naval battle of Guadalcanal in mid-November 1942.

USS North Carolina by Tom, on Flickr

Was on the decks of the exact ship 40+ years ago.

Amazing the engineering that went into building amazing ships.
 

Uglytruth

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PhucilliJerry

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0D181175-CEC4-4393-8B74-900CFE7FA196.jpeg
 

PhucilliJerry

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No idea what that is but it appears like it should qualify as sufficiently random. :don't know::beer:

Hahaha, it is the imprint from a blue jay wing in very light and fluffy snow (we got about 26”) from beneath our bird feeder as it was picking up sunflower seeds discarded by the nuthatches, chickadees and titmice....
This one is probably better actually:
95541BCE-2234-496C-8769-FA405977B812.jpeg
 

newmisty

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Nice to see some fresh blood in here.
 

newmisty

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Uglytruth

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Not my pic. Anyone else see the flag?

1608634883843.png
 

EricTheCat

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This hobby is getting out of hand. One thing lead to another and now I am prototyping an 8-bit computer, apparently. Forgive the poor lighting.

8bitComputer-2020-12-22-Img_9650SSS.jpg


Top breadboard is the decimal display circuit. It utilizes a 555 timer IC, 4-bit counter IC, decoder IC (to multiplex the 4 digits), an inverter IC and an EEPROM. 8-bits in, decimal display out using 2's compliment so it can display values from -128 through 127. Next breadboard is a counter circuit that's going to get re-done to serve as an address counter. 3rd breadboard down is the clock circuit, with the feature of manual clock pulse or automatic clock pulse switchable using the tact switches.
8bitComputer-2020-12-22-Img_9652SSS.jpg


Here the top and bottom breadboards are the A and B registers. These feed in to the breadboard between them which is an ALU circuit capable of outputting the result of A+B or A-B to the display depending if it is in add or subtract mode. After a bit of troubleshooting it is working perfectly.
8bitComputer-2020-12-22-Img_9653SSS.jpg


Next is to wire up another register to server as an instruction register then start programming additional EEPROMs to serve as a I/O control. I expect to get this to a point where I can program it with up to 4096 8-bit instructions.

All for no good reason. :computer: :D
 

Someone_else

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Damn! Have you seen the Gigatron TTL computer kit?
https://gigatron.io

Here is Dave Jones telling about the kit:
 

EricTheCat

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Unh...
whattaya mean 'no good reason'? Isn't the experience a good enough reason?
And lookit all the teeny bits of wire that you've given a second life to. <heh>

Programming in machine language?

BF
I suppose. I see it like a highly involved puzzle of sorts.
Those teeny bits of wire, lots of cutting and stripping going on here. I am flying through 22gauge hook-up wire.

I will be programming it in machine language. Fun thing is first I get to define the language (which 4-bit instruction value does which function/set of micro-instructions). :) Only instruction I am sure of right now is 0xF will be halt.
 

Bottom Feeder

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see, now if ya lived next door I coulda give you hundreds of feet of #22, 24, 19, 30, ect on 200 ft spools that I scrounged from MARS when I was a teenager and have kept for ever and ever.

Rockets!
You ever play with rockets?

BF
 

EricTheCat

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You ever play with rockets?

Just dabbled a bit. About 10 years ago some friends and I made home made rocket engines (sugar rockets). They didn't do that good.

Then a friend came over who was making rocket engines with a different formula which included iron oxide and a process where the formula is heated on a hot plate, melted and mixed. We launched a string of glow sticks and WOW, we were saying "That got really high!" and it just kept going higher and higher. No idea where it ended up.

On a much smaller scale, I've made fuse rockets. Those work surprisingly well, like the standard little bottle rockets.
 

Bottom Feeder

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Iron oxide? And what? Magnesium? Oooo, powdered aluminum would be really cool. (or hot, if you please)

BF
 

EricTheCat

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Iron oxide? And what? Magnesium? Oooo, powdered aluminum would be really cool.


Haha, that would make a sparkly rocket.

If I remember correctly, it was otherwise similar to the classic sugar rocket ingredients (powdered sugar, salt peter, sulfur, charcoal).
 

Goldhedge

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Neigh... neigh, say it isn't so....

Screen Shot 2020-12-23 at 11.52.18 AM.png
 

TomD

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For those of you who don't remember Gary Larson

cat fud.jpg
 

TomD

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In the Gulf of Mexico

DSC01265.jpg
 

Goldhedge

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I will be programming it in machine language. Fun thing is first I get to define the language (which 4-bit instruction value does which function/set of micro-instructions). :) Only instruction I am sure of right now is 0xF will be halt.
Wow! A Guy could even start a whole thread based around this topic! I know I'd be interested....
 

TomD

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No swimming!


DSC1309t.jpg
 

TomD

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DSC1597.jpg
 

Goldhedge

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Love B&W contrast...
 

TomD

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DSC02188m.jpg
 

Uglytruth

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Tom you got to fly with the Blue Angles? Gotta be a story behind that.
 

SongSungAU

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SongSungAU

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TomD

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TomD

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SongSungAU

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Goldhedge

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newmisty

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What's a gigatron & why did u post it? Is that something to do with the post you quoted Eric in? I've only read a few recent posts havent made it to the earlier ones. Actually sounds like something I might be interested in
 

TomD

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Tom you got to fly with the Blue Angles? Gotta be a story behind that.

No, I wish. The reality is far less exciting. That is an actual picture that I took but I photoshopped out the support structure. That's a display at a rest stop off I-10.