The main purpose: It can be used for Raspberry Pi 2B/3B/3B+/4B full range of development boards, for Arduino, C51, STM32 and other platforms. The Raspberry Pi provides programs that can display CPU, temperature, memory, hard disk occupation, IP address and other information. The OLED screen pin header has been soldered, and the finished line is optional, which can be directly connected to the for Raspberry Pi. High resolution: 128x64 (same resolution as 12864, high PPI); Viewing angle: greater than 160° Power consumption: normal display 0.06w (far lower than TFT display) Wide voltage power supply (3V-5V), compatible with 3.3V and 5V level logic, without level conversion chip IIC interface only needs 2 IO to light up easily. Working temperature range is industrial grade (-20℃-70℃); Military-grade process standards, long-term stable work. Instructions for use: 1. Correct wiring Pins on the module for Raspberry Pi GPIO VCC 5V/3V (red wire) GND GND (black wire) SCL SCL (yellow line) SDA SDA (blue line) 2. Install the WinSCP tool on the computer, connect to the for Raspberry Pi and download the data to the home/pi directory of the for Raspberry Pi. 3. Compile the program file gcc -o oled oled.c ssd1306_i2c.c -lwiringPi Among them, the gcc compiler is called, -o means the generated file, followed by the generated file name, oled.c and ssd1306_i2c.c are the source programs, and -lwiringPi refers to the wiringPi library of the Raspberry Pi. 4. Run the program ./oled At this point, you can see the CPU occupancy rate, CPU temperature, running memory occupancy rate, disk occupancy rate and IP address of the Raspberry Pi displayed on the oled screen. Due to different batches, there may be differences in product appearance, color, and printed text, which will not affect the use.