Tuesday, January 11, 2011

PIC Micro, H-bridge and DC motor

H-Bridge is a very popular application circuit for dc motor control. It uses BJTs or MOSFETs to switch on the dc motor in clockwise or counterclockwise direction. This tutorial describes the classical H-bridge circuit and how to interface it with a PIC microcontroller to operate a DC motor.

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.

Microcontroller-based Embedded Systems Design