Vairetz
Posts: 44
Joined: Wed Apr 27, 2016 4:54 pm

Serial screen for Raspberry Pi 3

Wed Jan 03, 2018 4:59 pm

Hi everyone, I have a seral screen with connector for UART pins and I'd like to use it with my pi, I'd like to display Raspbian desktop on it.
How can I do? I try to connect it to GPIO and it starts but I don't know how to set RX and TX pins. I'd like to display my desktop on it when I don't have HDMI connected to my pi. It's possible?
I made a site with a raspi projects' collection, my idea is sharing my projects with other people.
My web site is https://raspiproject.altervista.org/ I hope you like it and you want work with me

drgeoff
Posts: 10773
Joined: Wed Jan 25, 2012 6:39 pm

Re: Serial screen for Raspberry Pi 3

Thu Jan 04, 2018 11:40 pm

I suspect that your "serial screen" accepts only ASCII characters. If so you will only have a command line console, not the full desktop GUI.

Abd what type of interface does the screen have? If it is true RS232 or 5 volt TTL levels, you cannot connect it directly to the RPi GPIO serial port as that uses 3.3 volt levels and you risk fatally damaging the RPI.
Quis custodiet ipsos custodes?

Vairetz
Posts: 44
Joined: Wed Apr 27, 2016 4:54 pm

Re: Serial screen for Raspberry Pi 3

Sun Jan 07, 2018 2:34 pm

I have this screen: https://m.it.aliexpress.com/s/item/3283 ... &#autostay
I don't know if it's support all GUI interface..
I made a site with a raspi projects' collection, my idea is sharing my projects with other people.
My web site is https://raspiproject.altervista.org/ I hope you like it and you want work with me

drgeoff
Posts: 10773
Joined: Wed Jan 25, 2012 6:39 pm

Re: Serial screen for Raspberry Pi 3

Sun Jan 07, 2018 10:37 pm

http://www.spotpear.com/download/LCD/ua ... on-EN.docx

Technically possible but will require a custom software driver. Also it appears to have a 5 volt signal interface cf the 3.3 volt levels of the RPi.

The resolution is only 176 by 220 which is not very useful for a desktop interface.

My advice would be to forget this screen and use one of the more common ones that has proper RPi support.
Quis custodiet ipsos custodes?

Vairetz
Posts: 44
Joined: Wed Apr 27, 2016 4:54 pm

Re: Serial screen for Raspberry Pi 3

Sun Jan 14, 2018 11:15 am

I'd like test it out of curiosity, I will try the command that you send me thank you very much!!
I made a site with a raspi projects' collection, my idea is sharing my projects with other people.
My web site is https://raspiproject.altervista.org/ I hope you like it and you want work with me

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