This demo should show the unwanted blurring effect on a Nokia 5110/PCD8544 LCD display. The display is controlled by an ESP32
The blurring is dependent on the frame rate. I think the blurring effect up to 25 frames per second is acceptable.
Watch demo on Youtube
My Arduino IDE code for this demo based on https://github.com/codingABI/3dRotation
Jumper "JP" sets the "LIGHT" pin to ground and enables the back light leds permanently.
| Display pin | Conntect to ESP32 pin |
|---|---|
| RST | 2 |
| CE | 15 |
| DC | 4 |
| DIN | 23 |
| CLK | 18 |
| VCC | 3.3V |
| LIGHT | GND |
| GND | GND |