How do you design a circuit for a basic electronic lock with a keypad?
To design a circuit for a basic electronic lock with a keypad, use a microcontroller to interface with the keypad for input. Program the microcontroller to compare the entered code with a stored password. If the code matches, the microcontroller activates a relay or a motor driver circuit to unlock the door. Include a power supply circuit, and consider adding a buzzer or LED for feedback.