Raspberry Pi 5110 Mini LCD 84*48 PCD8544 Usage For C User If you are a C user, please test and use PCD8544 LCD according to the following steps: Step1: Install wiringPi cd /home git clone git://git.drogon.net/wiringPi cd wiringPi sudo ./build Step 2: Copy Cpu_show.tar.gz to /home and extract it Download the Cpu_show.tar.gz and then unzip it sudo cp yourpath/Cpu_show.tar.gz /home sudo tar xvf Cpu_show.tar.gz Step 3: Compile files cd /home/cpu_show sudo ./compile.sh Step 4: Run the program sudo ./cpushow NOTE: Due to the contrast of each LCD are different, if you found the content displayed too dark or too light, you need to modify the contrast variables of pcd8544_rpi.c, and then recompile and run to see the effect of changes ! vim pcd8544_rpi.c Modify the line 52, int contrast = 45; 45 is the default contrast, if the character LCD display is too light, set this value increases, decreases if the character LCD display is too dark. Recommended stepping value is 5. After the changes are complete, re-compile the code, and then run. For Python User If you are a Python user, please test PCD8544 LCD according to the following steps: Step 1: Download example code git clone https://github.com/sunfounder/Adafruit_Nokia_LCD.git Step 2: Configure the base environment cd Adafruit_Nokia_LCD sudo apt-get install python-dev sudo python setup.py install sudo apt-get install python-imaging Step 3:Run the Python program cd examples sudo python image.py Press Enter, you should see a cat displayed on PCD8544 LCD. Also you can modify these two files of animate.py and shapes.py exactly in the same way as image.py.Run and check the result.