45 lines
1.6 KiB
Markdown
45 lines
1.6 KiB
Markdown
# Create square wave patterns from binary strings
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This script turns a binary string into a square-wave pattern.
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It is intended for creating embroidery patterns based on programs for my paper computer.
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The output is formatted as if the data is being sent over an 8-bit data bus — see the [reference image below](#format-reference-image).
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## Use
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```
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./square-wave-from-binary.js bin.txt
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```
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The input must be a text file containing nothing but 0s and 1s (no spaces, newlines, etc). It must be an even number of 8-bit bytes in length.
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## Example output
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```
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01234567 01234567 01234567 01234567
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▄▀▄▄▄▄▄▄ ▄▄▄▄▄▄▄▄ ▄▀▄▄▄▄▄▄ ▄▄▄▄▄▄▄▄
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▄▀▄▄▄▄▄▄ ▄▄▄▄▄▄▄▄ ▄▀▄▄▄▄▄▄ ▄▄▄▄▄▄▄▄
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▄▀▄▄▄▄▄▄ ▄▄▄▄▄▄▄▄ ▄▀▄▄▄▄▄▄ ▄▄▄▄▄▄▄▄
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▄▀▄▄▄▄▄▄ ▄▄▄▄▄▄▄▄ ▄▀▄▄▄▄▄▄ ▄▄▄▄▄▄▄▄
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▄▀▄▄▄▄▄▄ ▄▄▄▄▄▄▄▄ ▄▀▄▄▄▄▄▄ ▀▄▀▄▄▄▄▄
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▄▀▀▄▀▄▀▄ ▀▄▀▄▄▄▄▄ ▄▀▀▄▀▄▀▄ ▄▄▄▄▄▄▄▄
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▀▀▄▄▄▄▄▄ ▀▄▀▄▀▄▄▄ ▀▀▀▄▀▄▀▄ ▄▄▄▄▄▄▄▄
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▀▄▀▀▀▀▀▀ ▀▀▀▀▀▀▀▄ ▀▄▄▄▄▄▄▄ ▄▄▄▄▄▄▄▄
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01234567 01234567 01234567 01234567
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```
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## Format reference image
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(From [Nuts and Volts](https://www.nutsvolts.com/uploads/wygwam/NV_1007_Martin_Figure09.jpg).)
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