Tag Archives: code lock

AVR Project – ATmega8 Based Smart Code Lock

Here is a project for beginners using Atmel AVR ATmega8. The project uses some techniques that are very useful for designers to learn and utilize. Alphanumeric LCD Module Interfacing. 4×4 Keypad interfacing. PWM Control of LED (Used to dim the back-light of LCD, like in some Nokia Phones) Basic Circuit design for AVR MCUs Connecting relays and other current demanding devices. AVR Studio and project management. compiling using free avr-gcc compiler. Using eXtreme Burner – AVR to burn hex code to AVR MCU. NOTE: Don’t waste time finding each part running from shop to shop. Get all the parts with exact specification in a ready to use kit! Purchase ATmega8 based smart code lock KIT.   Fig.: ATmega8 Based Code Lock Fig.: ATmega8 Based Code Lock Project     Functions of the Project. This device can be used to code protect any electrical device (like an electronic door, lock or safe). The user must enter a correct password to gain access. The password is entered using the built in 4×4 keypad matrix. The main LCD Module is used to display messages to the user. As soon as correct password is entered the relay is activated. This is indicated by a LED which is placed near the relay. The relay remains on as long as the user wishes. You just need […]