kosmich
Posts: 2
Joined: Wed Feb 21, 2018 6:18 pm
Location: Athens
Contact: Twitter

system with parallel port to raspberry pi

Wed Feb 21, 2018 6:43 pm

Greetings from Athens, Greece

this is my first topic in this forum in order to ask for help for my new promising project, so please forgive my ignorance as i am a novice :mrgreen: !
i am willing to connect a ship's old security system with my Pi, the only output port of which is a parallel port to connect with a dot matrix printer to print the alarms in real time (i do not intend to use the printer anymore). If i manage to read and send the logs to the Pi , i would like to continuously keep saving them in a file and project them in a screen and make them available to a LAN .

i do now seek for any magical or easy solutions, just a point to start :D

thank u for your time

tastycrust
Posts: 49
Joined: Fri Feb 14, 2014 4:59 am

Re: system with parallel port to raspberry pi

Wed Feb 21, 2018 10:47 pm

One option to consider is something like this:
https://hackaday.com/2017/05/05/convert ... cs-to-usb/

User avatar
rpdom
Posts: 12948
Joined: Sun May 06, 2012 5:17 am
Location: Ankh-Morpork

Re: system with parallel port to raspberry pi

Wed Feb 21, 2018 11:13 pm

tastycrust wrote:
Wed Feb 21, 2018 10:47 pm
One option to consider is something like this:
https://hackaday.com/2017/05/05/convert ... cs-to-usb/
I think that is doing the opposite of what is required. It connects a parallel device to USB. What is needed here is to emulate a parallel device, which might be possible with level converters. The parallel ports ran quite slowly and have a sort of clock and ready signals which could be used for timing.

kosmich
Posts: 2
Joined: Wed Feb 21, 2018 6:18 pm
Location: Athens
Contact: Twitter

Re: system with parallel port to raspberry pi

Fri Feb 23, 2018 7:14 pm

rpdom wrote:
tastycrust wrote:
Wed Feb 21, 2018 10:47 pm
One option to consider is something like this:
https://hackaday.com/2017/05/05/convert ... cs-to-usb/
I think that is doing the opposite of what is required. It connects a parallel device to USB. What is needed here is to emulate a parallel device, which might be possible with level converters. The parallel ports ran quite slowly and have a sort of clock and ready signals which could be used for timing.
you are right, i am willing to convert parallel port into USB for real-time control, althought i will begin my search with the level converters you mentioned above, and try to figure something out

Return to “Automation, sensing and robotics”