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andreisperid / E-TKT

open source embossed label maker
https://andreisperid.github.io/E-TKT/
MIT License
398 stars 19 forks source link

Segmented symbols #37

Closed Knochi closed 1 year ago

Knochi commented 1 year ago

I created a module to generate 16-segment display style patterns. There is a wheel that contains all segments isolated and some common combinations. Letters and numbers must be combined by pressing multiple segments without feeding the tape

andreisperid commented 1 year ago

That's interesting and that idea might lead to a braile press 💡

Knochi commented 1 year ago

Haha yes Braille is the next I‘m looking at. And I have an idea of a dot Matrix Implantation, but that would require quite high precision of the feeder mechanism. What do you think is the precision and repeatability?

andreisperid commented 1 year ago

I guess you might be wanting to use a 3 individual press vertical inline + feed for both advancing the horizontal lines and spaces, right? Instead of the daisy wheel?

Right now the biggest imprecisions on feeding are because of: 1 - this specific stepper motor isn't strong enough, eventually missing steps 2 - the tape occasionally slips, because the extruder gear doesn't fit tight on the stepper motor axis (even with the screw, it gets a bit eccentric

For a totally new design, I guess a NEMA for the feeder would be better. I was thinking about doing a different machine just for braille.

Knochi commented 1 year ago

For Braille I think we can go with the current design.

I was thinking of printing a pixel matrix of 5x8 dots by having just columns of dots, single ones and common combinations.