[Resource Download] The download address is as follows:
https://docs.qq.com/doc/DTlRSd01BZXNpRUxl
Basic password lock function:
1. 51 single chip microcomputer + matrix button + 24C02 storage + buzzer + button + 1602 liquid crystal display + 5V six-pin relay + LED indicator;
2. Set a 6-digit password. The password is entered through the keyboard. If the password is correct, the lock will be opened.
3. The password can be modified and set by the user (only 6-digit password is supported), and the password can be modified after the lock is opened. The password must be entered again before the password is changed, and a second confirmation is required when entering the new password to prevent misoperation.
extensions:
1. The password can be input by infrared remote control;
2. After the user enters the wrong password for three times, the MCU locks the keyboard and alarms;
Information description:
The attachment content provides the AD format schematic diagram PCB project file, which can be opened with altiumDesigner.
The program is written in C language, compiled by keil software, and the file is the project source code.
