Tag Archives: sparkfun

Raspberry Pi Thermal Printing: an update

Reader Daniel Boira recently asked me if I’d experimented with printing large characters on the SparkFun thermal printer (see Hacking a Thermal Till Printer…) that I’d rigged up to my Raspberry Pi’s GPIO. I hadn’t done so, so I thought I’d give it a try.

Printing double-size text
Print characters tall, wide, or tall and wide
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Hacking a thermal till printer to work with the Raspberry Pi

I’ve always had a soft spot for Sinclair’s ZX Printer. Yes it was slow and the print was poorly rendered on its special aluminium-coated paper, which picked up greasy fingerprints like they were going out of fashion, but it was cute, compact and cheap.

The Sinclair ZX Printer
A Sinclair ZX81 and the ZX Printer
Source: Carlos Pérez Ruiz
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