Learn how to make a door lock system using password with keypad and Solenoid lock. When the door is unlocked by a correct password, It keeps the door unlocked for 20 seconds, and then automatically locks the door again. The ESP32 code supports multiple passwords. The detail instruction, code, wiring diagram, video tutorial, line-by-line code explanation are provided to help you quickly get started with ESP32. Find this and other ESP32 tutorials on esp32io.com.
