Wednesday, January 5, 2011

Programmable digital timer with a relay switch

This project shows how to make a simple programmable digital timer switch with a PIC16F628A microcontroller. The timing schedule for the relay switch can be programmed through 4 push buttons. The program menu, the status of the relay switch and time information is shown on a character LCD.

The circuit details and firmware are available to download at in the Projects section.

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Microcontroller-based Embedded Systems Design