This simple code lock circuit described here is of an electronic combination lock for daily use. It responds only to the roght sequence of four digits that are keyed in remotely. If a wrong key is ...

The main principle of this circuit is that the door lock opens only when the buttons in series are pressed at a time. We can use it to lock the doors and for other security purposes. This article ...

Security is a major concern in our day to day life, and digital locks have become an important part of these security systems. There are many types technologies available to secure our place, like PIR ...

The system is fully controlled by the 8 bit microcontroller 16F877A which has a 8Kbytes of ROM for the program memory. The password is stored in the EPROM so that we can change it at any time. The ...

priv-code-lock-sw is an extension of fredom-u-sdk. Please follow README.md under priv-code-lock-sw directory to build. priv-code-lock-hw is a modified rocketchip, please follow follow README.md under ...