Electronic Lock Circuit Using Microcontroller

Many electronic code lock are available in market some using microcontroller and many more using discrete electronics components.

Electronic lock circuit using microcontroller.

Default password 1234 is stored in eeprom of pic microcontroller. Electronic lock using pic microcontroller circuit diagram. This type of locks needs a microcontroller to compare the entered code with the predefined code to open the lock. The password is entered by making use of a keypad.

After taking inputs from a user. A 4 3 matrix keypad and a 16 2 lcd have been used here. Raspberry pi digital code lock. So we have described a circuit which uses commonly available switches and a alarm to protect your almirah and other important documents.

Circuit diagram of electronics lock is shown below. Here an at89c52 microcontroller is used and it is an 8 bit controller. Password based door lock system using 8051 microcontroller circuit design uses five major components a microcontroller an l293d motor driver a dc motor a 4 4 matrix keypad and a 16 2 lcd. Pic16f877a microcontroller reads these inputs and compared it with a already stored password.

Using codes for the purpose of a security has been the popular trend recently. A four digit predefined password is specified in the microcontroller at89c51 s program. Working of electronic lock. If the entered password from keypad matches with this password then the lock opens and a message is displayed on lcd also an output pin is made high to be used for further.

We have already built these kinds of digital locks using arduino using raspberry pi and using 8051 microcontroller. Via unveils ai system powered by qualcomm snapdragon 820e onion s omega2 dash is an iot platform for all in one touch driven projects gpio functions on stm8s using cosmic c and spl blinking and controlling led with push button eepd launches amd ryzen embedded nuc boards mini pcs audio equalizer tone control circuit with bass treble and mid frequency control using. 555 timer electronic door lock. A similar type of electronic project is presented right below called electronic code lock circuit which ensures the use of four digits in code locking process and these codes are keyed in remotely.

They are provided with an access control system. But because of large components it uses they are bulky and cannot be handy to use. But today here we are building the code lock. An electronic lock or digital lock is a device which has an electronic control assembly attached to it.

Electronic lock takes inputs from the user with the help of 4x4 keypad. This controller requires a supply voltage of 5v dc. Digital code locks are very popular in electronics where you need to enter a particular code to open the lock. Arduino uno pro mini or custom board using atmega 328p microcontroller.

16 x 2 lcd liquid.