Start VNC and SSH Enter the terminal of raspi, sudo raspi-config，and start vnc and ssh with the UI interface. Alternatively, after you flashed the SD card with raspi os, create a file named ssh (no f

Welcome to Hexo! This is your very first post. Check documentation for more info. If you get any problems when using Hexo, you can find the answer in troubleshooting or you can ask me on GitHub. Quic

Arduino, LCD1602A, HC-SR04 configuration LCD1602 display 引脚 4线连线: Pin Connect to Explaination VSS ground 接地 VDD 5V power 接电源 V0 电位器输出 对比度调整端（5V对比度最弱，接地对比度最高；可通过10kΩ电位器调整对比度） RS 12口 寄存器选