EPSON DOT matrix char code to set page length in inches (Javascript)51 sec read

Set of codes to set page length

Find the list of char codes at

So to set the length of a page in number of lines, use

var num_lines = 72;
String.fromCharCode(27, 67) + String.fromCharCode(num_lines)

Going by the char code list to set the length of the page in inches, we should use

var page_inches = 12;
String.fromCharCode(27, 67, 48) + String.fromCharCode(page_inches);

But it just doesn’t work!!!!!

What happens is the printer thinks you want to set the page length to 48 lines and not 12 inches. Also char code 12 means form feed, so you get one of that too..

I solved it by using

var page_inches = 12;
String.fromCharCode(27, 67, 0) + String.fromCharCode(page_inches);

So you need to add String.fromCharCode(0) and not String.fromCharCode(48) and you will get a page length of 12 inches.



Creating an SVG filter icon1 min read

I find it easier tot write an HTML page than create a document or powerpoint presentation. Similarly it is easier for me to write SVG icons in XML rather than create one in photoshop. So here is my simple “SVG filter icon”

<svg xmlns="" xmlns:xlink="" width="100" height="100">


Start by opening the svg tag and give it a width and height of 100

Next lets add a circle with a radius of 50 and it’s center coinciding with the svg element’s.

<svg xmlns="" xmlns:xlink="" width="100" height="100">
    <circle cx="50" cy="50" r="50" fill="#1b3131" />


Now lets add the filter icon using a polygon. We write the co-ordinates of each point of the filter icon, magics happens and we get a filter.

<svg xmlns="" xmlns:xlink="" width="100" height="100">
    <circle cx="50" cy="50" r="50" fill="#1b3131" />
    <polygon points="20,25 80,25 55,60 55,75 45,85 45,60" fill="#a9d41e" />


We start from the top left corner of the icon (20, 25) and trace its path through (80,25) (55,60) (55,75) (45,85) (45,60) and is finally joined back to (20, 25)


Complete SVG filter icon

Good day/night 🙂


Why I use Typescript + babel?46 sec read

  • Types helps me to avoid silly mistakes by forcing me to stick to a common rule rather than total chaos.
  • Strip the types and you get javascript, so you don’t loose touch with it
  • I use a javascript transpiler (Babel) anyway. So why not exploit types.
  • It works very well with VS-Code which is an awesome product.

Typescript vs Flow

  • Nothing wrong with, but its harder to set up and documentation is not that good.
  • In case of Typescript just use VS-Code which I use anyway
  • It is pretty much the same. So everything comes down to convenience.

Typescript vs Babel

  • Babel wins for me because of plugins and presets.


  • Well I tried, but the documentation isn’t good enough
  • Laaaaaaaazyyyyy…