Dot matrix printer interface: Hardware (building/proof-of-concept)

Posted on 2014-10-04 at 00:09 in Videos by Robbi-985.

The printer is an old Epson LQ-300+. I want to be able to send my own commands to it, but modern computers don’t have parallel ports, so I decided to make my own USB interface. I thought I might as well, if I’m going to be writing the software anyway.

[Watch in HD]

This interface (Arduino) goes between the printer and the laptop, appearing as a serial port to a program of mine which will be running on the laptop. In this video, for testing that I can communicate with the printer, the Arduino itself is sending the data, instead of my laptop. In the next video, the Arduino will be playing a simpler role and mainly just forwarding data from my laptop to the printer.

NEXT PART: Software

Leave a Reply

Your email address will not be published. Required fields are marked *


You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>