Need help in displaying data of device showing on it's LCD on a computer screen

[shabbirhussain]

The Main card of my device is sending output on a graphical LCD. The model of LCD is 128x64 - ST7920. The pin of the device sending data is (Data and CLK) and this is going to graphical LCD whose pin is 5 and 6 (RW and E). I want this output to be shown on computer screen too through that pin. How this can be done?

[pert]

I moved your topic to an appropriate forum category @shabbirhussain.

In the future, please take some time to pick the forum category that best suits the subject of your topic. There is an "About the _____ category" topic at the top of each category that explains its purpose.

This is an important part of responsible forum usage, as explained in the "How to get the best out of this forum" guide. The guide contains a lot of other useful information. Please read it.

Thanks in advance for your cooperation.

[madmark2150]

You can't directly send graphics to the computer over those lines as the computer would need a special interface and the data being sent is pulses, not ASCII characters.
You could add serial.print statements to send data to a PC, but it would be more abstract than timing pulses.

[Nick_Pyner]

@shabbirhussain

I want this output to be shown on computer screen too through that pin.

The short answer is - no chance. But, assuming the data going to the LCD was actually derived from something numeric, you could send the same to a PC where it is rendered graphically. The obvious way to do this is to send it to Excel and thereby derive a live graph.

PLX-DAQ version 2 - now with 64 bit support! (and further new features)

Or use the datastreamer facility in recent versions of Excel.

[TomGeorge]

Hi, @shabbirhussain
Welcome to the forum.

How to get the best out of this forum

See also FAQ - Arduino Forum for general rules on forum behaviour and etiquette. Hello, Welcome to the Arduino Forum. This guide explains how to get the best out of this forum. Please read and follow the instructions below. Being new here you might think this is having rules for the sake of rules, but that is not the case. If you don’t follow the guidelines all that happens is there is a long exchange of posts while we try to get you to tell us what we need in order to help you, which is fru…

What is the device you want to read and display on a PC screen?

Can you please post some images of the device?

Thanks.. Tom..

[shabbirhussain]

can we use arduino mega or Raspberry pi for interface.
My Device Main board Microcontroller out Data R/W and E for LCD ST7920

[horace]

@shabbirhussain

My Device Main board Microcontroller out Data R/W and E for LCD ST7920

looks as though the ST7920 is using an I2C interface
if you could tap the SDA and SCL signals you you could possibly decode the commands and extract the text etc being written to the display

[shashank2709]

Determine the interface: Discover the interface that the device uses to connect to the computer. It might be a proprietary USB, HDMI, VGA, DVI, or other interface.

The output interface of the device must be connected to a compatible input port on the computer using the required cables or adapters. Verify the security of the connections.

Configure the computer: The display settings on the computer may need to be changed in order for it to recognize the connected device, depending on the operating system.

Choose whether you want to extend the desktop of the computer to the device or mirror the screen of the device on the computer. The option is typically located in your operating system's display settings.

You should be able to view the device's screen on the computer once the connection has been made and the settings have been specified. On the computer screen, the device's LCD output will appear as a window or an extended desktop.

Hope it help you.