[GreenKeys] [External] Re: modified teleprinter

Harold Hallikainen harold at w6iwi.org
Mon Apr 4 00:29:21 EDT 2022


Thanks for the great history on printer technology! Right now, I really
like the mechanical simplicity of inkjet. The idea of spewing drops of ink
by boiling it is pretty amazing. I remember one proposal was to use
electrostatic deflection of the ink as it flew towards the paper. The
first inkjet printer I saw was an Olivetti that had one inkjet. It scanned
back and forth across the page very fast making somewhat wobbly text.

I note on the page you linked to that you did a typeface using an 8x16
matrix. I did a lot with Unifont which also uses 8x16 or 16x16 for Asian
characters. I put the Unifont character set in a 2 MB SPI flash. The
system (cinema closed captioning system) would receive packets containing
UTF-8 strings of characters that were then sent to an OLED display. The
transmission of the data was FSK RF over IR. So, I took a RTTY signal and
put it on IR.

All fun stuff!

Harold

-- 
https://w6iwi.org


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