Relay Timer with ATmega8 AVR MCU

Posted on Feb 5, 2014

A simple timer that can be used to turn on/off a load after user specified time. The prototype was developed using xBoard MINI, a low cost easy to use ATmega8 development board. The program was burned to the MCU`s flash memory using eXtreme Burner - AVR Software and Hardware. The Simple Device Timer project designed using ATmega8 AVR MVU.

Relay Timer with ATmega8 AVR MCU
Click here to download the full size of the above Circuit.

The Timer is usefully for keeping a device "ON" for a specific period of time. After the set time elapse the timer automatically turns the load off. The Timer uses a standard 16x2 lcd module for user interface UI. User can set the time using a 3 button keypad. After that Timer is started. While count down is in progress, the time left is displayed on screen. The program use our LCD driver library more details of which can be found in Web site. Use avr-gcc + AVR Studio to compile.

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