moee
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Joined: Sat Nov 23, 2013 10:42 am

Help Connecting LCD to Pi

Sat Nov 23, 2013 10:46 am

Hello. I purchased the following lcd screen from sparkfun.com:

https://www.sparkfun.com/products/11743

and I cannot figure out how to connect this thing to my Pi... I tried to search all over the internet and I saw some videos, and I finally got it connected to the 5 pins on GPIO, but I dont even know if I connected it right because it the LCD screen turns on when i boot up the raspberry pi but it just shows a black blank screen meanwhile my raspberry pi is displayed on the other monitor connected via RCA cable....so my question is, how can I get the LCD to display what I see on the other monitor or how can I send anything to the display at all???

I dont mind having it function as a seperate display, but how do i actually display something on this LCD?

Can someone please help?

jamesh
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Re: Help Connecting LCD to Pi

Sat Nov 23, 2013 11:08 am

Surely Sparkfun must provide some instructions?
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DougieLawson
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Re: Help Connecting LCD to Pi

Sat Nov 23, 2013 1:40 pm

There's some sample applications on the Australian manufacturer's website http://www.4dsystems.com.au/product/5/3 ... 32_PTU_PI/

And a library at: https://github.com/4dsystems/ViSi-Genie-RaspPi-Library
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klricks
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Re: Help Connecting LCD to Pi

Sat Nov 23, 2013 2:38 pm

moee wrote:Hello. I purchased the following lcd screen from sparkfun.com:

https://www.sparkfun.com/products/11743

and I cannot figure out how to connect this thing to my Pi... I tried to search all over the internet and I saw some videos, and I finally got it connected to the 5 pins on GPIO, but I dont even know if I connected it right because it the LCD screen turns on when i boot up the raspberry pi but it just shows a black blank screen meanwhile my raspberry pi is displayed on the other monitor connected via RCA cable....so my question is, how can I get the LCD to display what I see on the other monitor or how can I send anything to the display at all???

I dont mind having it function as a seperate display, but how do i actually display something on this LCD?

Can someone please help?
As stated in the description, this screen is not a main display.
" Note: This is not a monitor for the Raspberry Pi, it is an LCD module that requires programming."

Which means you must create a program to send text or graphics to the screen.

For example this command will draw a rectangle on the screen:
gfx_Rectangle(x1, y1, x2, y2, colour)

Click on the datasheet link for a list of all the commands.
Unless specified otherwise my response is based on the latest and fully updated RPiOS Buster w/ Desktop OS.

moee
Posts: 5
Joined: Sat Nov 23, 2013 10:42 am

Re: Help Connecting LCD to Pi

Sat Nov 23, 2013 7:34 pm

jamesh wrote:Surely Sparkfun must provide some instructions?

The manufacturer included a small piece of paper inside the package that had some vague brief instructions on how to connect it, but i can't get anything than the default lcd logo to show when I turn on the Pi. Its connected to my TV via RCA and I just want to be able to show something on this other screen, even programmtically if i can. I am guessing its connected to pins 14 and 15 on GPIO??? but i am not sure how to display something on it. Also I am using python, and the libraries i found out there are written in C.

moee
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Re: Help Connecting LCD to Pi

Sat Nov 23, 2013 7:37 pm

klricks wrote:
moee wrote:Hello. I purchased the following lcd screen from sparkfun.com:

https://www.sparkfun.com/products/11743

and I cannot figure out how to connect this thing to my Pi... I tried to search all over the internet and I saw some videos, and I finally got it connected to the 5 pins on GPIO, but I dont even know if I connected it right because it the LCD screen turns on when i boot up the raspberry pi but it just shows a black blank screen meanwhile my raspberry pi is displayed on the other monitor connected via RCA cable....so my question is, how can I get the LCD to display what I see on the other monitor or how can I send anything to the display at all???

I dont mind having it function as a seperate display, but how do i actually display something on this LCD?

Can someone please help?
As stated in the description, this screen is not a main display.
" Note: This is not a monitor for the Raspberry Pi, it is an LCD module that requires programming."

Which means you must create a program to send text or graphics to the screen.

For example this command will draw a rectangle on the screen:
gfx_Rectangle(x1, y1, x2, y2, colour)

Click on the datasheet link for a list of all the commands.

Yes, I saw that little note from the store owner after i had purchased it already and went back to read the description for the 2nd time, so i guess that website owner just made a misleading title for his product, but nevertheless, i should still be able to display something on it. I am okay with having it not be the main screen, I just want to be able to send some graphics or video to it and display somethign programmtically if needed.

Thx guys!

This is great help and information!

moee
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Re: Help Connecting LCD to Pi

Sat Nov 23, 2013 7:39 pm

DougieLawson wrote:There's some sample applications on the Australian manufacturer's website http://www.4dsystems.com.au/product/5/3 ... 32_PTU_PI/

And a library at: https://github.com/4dsystems/ViSi-Genie-RaspPi-Library

thank you sir, this is great information!

moee
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Joined: Sat Nov 23, 2013 10:42 am

Re: Help Connecting LCD to Pi

Sat Nov 23, 2013 7:54 pm

The documentation and samples say i need to connect the lcd to the raspberry pi board using serial, but i already have it connected using this 5 pin wire that came with it.... does that mean I need to connect a serial cable to? and if so, does anyone know where i can buy a serial cable that I need for it online? Perhaps a link? :)

Thank you for your help!

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DougieLawson
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Re: Help Connecting LCD to Pi

Sat Nov 23, 2013 9:21 pm

moee wrote:The documentation and samples say i need to connect the lcd to the raspberry pi board using serial, but i already have it connected using this 5 pin wire that came with it.... does that mean I need to connect a serial cable to? and if so, does anyone know where i can buy a serial cable that I need for it online? Perhaps a link? :)

Thank you for your help!
The chances are that the connector you're using is serial (if that's what Sparkfun supplied). There's a serial interface on GPIO 14 & GPIO 15.
Note: Any requirement to use a crystal ball or mind reading will result in me ignoring your question.

Criticising any questions is banned on this forum.

Any DMs sent on Twitter will be answered next month.
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klricks
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Re: Help Connecting LCD to Pi

Sat Nov 23, 2013 11:23 pm

moee wrote:The documentation and samples say i need to connect the lcd to the raspberry pi board using serial, but i already have it connected using this 5 pin wire that came with it.... does that mean I need to connect a serial cable to? and if so, does anyone know where i can buy a serial cable that I need for it online? Perhaps a link? :)

Thank you for your help!
Please go to the link which you yourself already gave. Here it is again:
https://www.sparkfun.com/products/11743

Go to the red documents links and download all the PDF''s and read them. There is a detailed 44 page reference manual etc. These should answer most of your questions.
Unless specified otherwise my response is based on the latest and fully updated RPiOS Buster w/ Desktop OS.

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