PIC16F877A interface TIP 122 NPN transistor for driving DC motor.

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This video is about how to control loads requiring higher current or voltage which PIC's digital input output pins cannot provide using cheap transistors. This is also a very cheap alternative to using a L298N module.
it has a very high current and voltage rating depending upon the transistor being used. Incase, you want to increase the output power , just change the transistor.
For making robots we need alot of methods to control motors. One of the best method is to use transistors.
Programming software being used is MikroC for PIC.

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You can setup your PIC by following this video:

Code is as under:

void main() {
TRISB.F7 = 0 ;
PORTB.F7 = 0 ;
Delay_ms(100);

while(1)
{
PORTB.F7 = 1;
Delay_ms(3000);
PORTB.F7 = 0;
Delay_ms(1000);

}

}

[Rev-]

First off, I really enjoy and like your hard work and videos. Now to the circuit. For the PIC to have any influence on that transistor shouldn't both the pic and transistor share the same ground also? Secondly, I am a bit puzzled concerning the transistor the configuration, it almost appears as though the transistor is now being used as an open collector; excellent. Lastly, is that diode intended to block any reverse current from destroying that transistor or is it to bias it or to insure that no high voltage can ever back feed into that PIC? I've seen and used diodes in similar cases while driving motors with mosfets paralleling the drains and source pins.Just curious 🤔.

[tejassubhedar]

Can I use mosfet instead of transistor?