Hi I have a doubt in the servomotor with PIC tutorial because don't know how the REG_value is calculated and why TMR0 is 251 and this line of code
on_time = (170-pot_value); can you explain to me please, THANKS
Here the variable pot value will vary from 0-40 based on the potentiometer value. So when the value is 0 we have to make a PWM with 0 duty cycle and when 40% we have to make a pwm with 100% duty cycle.
When the value of on_time is 170 a 100% duty cycle will be formed by the timer0 module and when 130 i.e (170-40) a 0% duty cycle will be formerd. To understand the concept better you can download the simulation file and try simulating the code by using different values for 170