I used to have a 15 deg stepper motor; now I have a 7.5 deg stepper motor.
The ideal thing is to change the software to output the pulse control at double the rate to achieve the same rotation rate. But b/c I don't have the software source I can't easily change it.
To avoid this issue , I would like to create some HW that goes inline with the existing control output that will issue two pulses for each incoming pulse.
Delay based solutions for frequency doubling don't seem to be a good solution as their delay element would have to vary for each input frequency.
Is a PLL a good option? A small micro-controller? Any other suggestions?