how to control dc motor using P16F84A?

[aerial]

hey guys need help here....im using P16F84A for controlling a motor..no idea how to..the motor runs upto 6 volts ..i try to connect directly the terminals of the motor to the PIC i think that was a mess coz the output of the pic cant drive the motor..any idea?its for my project

 

[dknguyen]

You are correct, the PIC can provide the voltage but not the sufficient current to drive the motor.

YOu need to use drive transistors or something. Google H-bridge. It allows you to change the direction of the motor. And if you PWM the H-bridge instead of just off or on, you get speed control too.

 

[Tarsil]

I recomend using the 16F628 and a PWM motor driver IC controled by serial interface. The 16F84 does'n have one and 16F628 is newer, cheaper, available, better.

 

[ikalogic]

what ever the microcontroller you are using, and what ever technique (PWM, DC..) use a ready motor driver IC like the L293D or the L298 for higher currents.

Really it will work perfectly, and takes very litle space.