Raspberry Pi 1.6 inch LCD - 9. Fonts are not clear on LCD

Fonts are not clear on LCD

1. Problem phenomenon

During the experiment, it was found that some of the fonts displayed on the display screen were very dim, and some were almost white, so it was difficult to see the font.

2. The cause of the problem

In fact, it is caused by the contrast of the screen. Due to the individual differences of the products shipped from the factory, some products need to adjust contrast ratio before they can be displayed normally.

3. Solution

Open the code to initialize the LCD function. The last parameter is to set the contrast ratio. Modifying the contrast ratio appropriately can solve the problem.

Contrast ratio is stored in the contrast variable, we can directly modify the value of the variable, the range of contrast is 30-90.

Then, re-compile the project and run the program to see the effect.

TAG： Digital Photo Frames Raspberry Pi CM5 to Pi 5 Expansion Board With USB microphone & Audio Port Spotpear AURORA AI Laser Radar And Dual Eye Camera IMU Integrated Positioning Map For Android/ROS+RoboStudio Raspberry Pi Pico 2 RP2350B 7inch Capacitive TouchScreen 7 inch LCD Display Development Board 800×480 Raspberry Pi Pico 2 RP2350 ETH CH9120 TCP/UDP Ethernet Network For Arduino RS485 ESP32 1.44inch LCD Raspberry Pi 64MP Camera STM32 0.96inch RGB OLED How to Use Product ROS2 Raspberry Pi Camera V2 Raspberry Pi LCD 3D Display ESP32-S3 AI Camera 1.28inch LCD Dual MIC Development Board Display 1.28 inch Voice Interruption Object Recognition 10-in-1 Multifunctional EoAT Setting Raspberry Pi IR Thermal Imagi Industrial USB to RS485 Converter AI Board USB to I2C ESP32-S3 1.28inch Round LCD Display Screen Module Development Board GC9A01A QMI8658A With Case

9. Fonts are not clear on LCD User Guide

Fonts are not clear on LCD

Raspberry Pi 1.6 inch Display Module with Backlight, for raspberry pi Zero/1B/2B/3B /3B+/4B