speed control of motor by parallel port

[pakiboy]

I want to vary the speed of DC motor through parallel port using C language.....
how could i do it...can any body giv me the clue of commands use in programming for speed control in C....

can body help me this is regard ...... PLZZZzzzzzzz....

 

[kishore2k4]

You can buffer one of the data-lines(as the parallel port can only source a few mA of current) and then use PWM.

You can send signals to the port by writing to a port register from within your C program.

https://www.epanorama.net/circuits/parallel_output.html The above link has detailed information regarding parallel port and its control.