ST7789 gLCD and Arduino nano- Slow Display response

[ifrdbcsirbd]

I am trying to use ST7789 1.3 inch LCD with Arduino nano with Flowcode 9. The written code changes background color in every second. But in practical the color changes very slowly from top to bottom (Slow motion), not instant. How can I set to change display instant? please help some one.

[medelec35]

Hello.
Within the display properties, try changing your prescaler to Fosc/4
It still might not be instant but the speed is tied up with the microcontroller running speed.

[ifrdbcsirbd]

Hello medelec35 ,
Thanks for your quick response. Unfortunately I am not finding any option for changing prescaler in the display property.

[chipfryer27]

Hi

If you go to properties on the display, scroll down you will see option for scaling.

Screenshot 2025-09-28 041404.jpg (100.15 KiB) Viewed 2819 times

Regards

[ifrdbcsirbd]

In the V9 there is no SPI property of ST7789.

[chipfryer27]

Hi

Sorry, I overlooked that you were using v9. Unfortunately I don't have v9 on this laptop.

Regards