Multi digit numeric display with lamps

[JasonC]

This blueprint is for a single digit in a multiple digit numeric display. It looks like this:

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Usage is as follows:

• S: This is a spot for a substation. Place as needed.
• IN: For the rightmost (one's) digit, send your value to display here, on the red circuit. Use the green square signal. For all remaining digits connect this to the OUT of the previous digit.
• OUT: Connect this to the next digit (it's IN divided by 10).
• You can chain as many together as you want.

If you want to move the lamps around you can. Just create a blueprint from the lamps, destroy the original ones, then create them anywhere you want, then run a connection from any one of the lamps to either side of any one of the ='s or +'s, doesn't matter. Here is a blueprint for just the lamps if it's useful:

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You can also design any font you want, as long as it's basically 7-segment in nature (plus the 6 vertices if you want). All you need to do is lay out your lamps, string them all together with red wire, then copy + paste the settings from the lamps above to your new font. For example, here is a larger digit with no vertices:

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Here is an example of a 5-digit display that shows how much water is in some tanks (the comparator next to the tanks changes the water signal to the green square):



I find it easier to read from far away... the contrast isn't very good on the lamps. It's not that easy to read in general but... whatever.

But looking around the forum there's way better versions of this out there with much fewer combinators; I'm not quite there yet.

[JasonC]

Here's a video of it displaying the current play time: https://youtu.be/vLxM_2Gs5Ug:



I forgot to wire up the colons.

[lamesnow]

I based my display on this post: viewtopic.php?f=8&t=19825&p=128090#p128215, and came to this display:

(I like to use more lamps for better visibility).
The two combinators on the top right are not needed, they decide the number I display in this setup. The setup requires 3 constant combinators and 5 arithmetic combinators, plus 2 arithmetic and 2 decider combinators per digit.

[JasonC]

Those are way better. I'll have to look at the blueprints later to see how they pack so much in so few combinators.

Your font is my favorite out of all the ones in that thread.

[lamesnow]

Right, i'll post my blueprint as well, although it uses a few more combinators than their designs.

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About the font, do you mean the bigger numbers? Because I use the most basic number font I could imagine . I also use green wires for the lamps because they are less visible than the red wires.

[JasonC]

Yeah the bigger numbers. It's basic, which is good. In a 6x10 square there's all sorts of things somebody could call "basic" but would still look awful; so don't be so surprised.

[lamesnow]

It works by using a const combinator emitting "magic numbers" which are the decimal representations of two's complement numbers:

***0123456789*******************
0: 00101000000001000000000000000000 -> 671350784
1: 00101001000001000000000000000000 -> 688128000
2: 00100000000001000000000000000000 -> 537133056
3: 00101110001001000000000000000000 -> 774111232
4: 00111111111111000000000000000000 -> 1073479680
5: 00100000110001000000000000000000 -> 549715968
6: 00101000001001000000000000000000 -> 673447936
7: 00111000001001000000000000000000 -> 941883392
8: 00100000000001000000000000000000 -> 537133056
9: 00101011101011000000000000000000 -> 732692480
a: 00111111111111000000000000000000 -> 1073479680
b: 00100100000001000000000000000000 -> 604241920
c: 00101001001001000000000000000000 -> 690225152
d: 00101001001001000000000000000000 -> 690225152
e: 00100000000001000000000000000000 -> 537133056

the rows (0-E) are the specific lights (in this case 2x2 lights because I use the big display), and the columns are which number we want to display. It is inverted though, so we have a 0 if we want to have the lights on, and a 1 when the lights should be off. For example, light 4 has 1's everywhere, meaning it's always off. I numbered my lights like this:

012
345
678
9ab
cde

so light 4 is the place where you don't have a lamp.

An other example, 0: 00101000000001000000000000000000. This light is always on except when we display a 1.


To get the final number, you should convert it as a 32 bit two's complement integer to a normal decimal number (I used http://www.exploringbinary.com/twos-com ... converter/)

[Evan_]

It works by using a const combinator emitting "magic numbers" which are the decimal representations of two's complement numbers:

I thoroughly read your whole description multiple times, and didn't understand a word of it. Well of course besides 'number' and 'magic'. But I already knew this must be the main two attributes of a numeric display that doesn't have a bigger combinator-field than a regular beginner 3-science fab.

Just for comparison, I'm gonna repost my display, because hell, I'm still bloody proud of it people will appreciate your awesome wizardry even more next to it. Ok I admit, I asked for help with the math, as I'm a layman who can't tell what is 7 times 8 without a combinator.



As you may see, I was very afraid of chaining wires, as I was convinced it will make them pick up rogue signals and I'll never be able to debug it. Tuns out it was not the case, but all the wiring makes it look impressive and complicated.

[JasonC]

It works by using a const combinator emitting "magic numbers" which are the decimal representations of two's complement numbers:

That part, and representing lamps with bits, makes sense. I finally looked at the blueprints. The thing I was missing was a basic understanding of how the wildcard symbols worked. So I attempted to do it using standard logic gates for 7-segment display drivers. Techniques for storing and selecting information using the wildcards with multiple signals didn't occur to me. This opens up a whole new world of possibilities. Thanks!