I'm working on a project where I need a DC motor (12V, 350mA) to build speed from stationary to full speed within say 10 seconds and then remain at full speed until the power is cut. I've done a little research into it and have seen PWM's recommended however having a quick look at prebuilt PWM circuits they all have potentiometers that vary the speed manually.
I however just want an automatic pre defined ramp up that happens everytime 12V is applied, being able to alter the speed thereafter is not required.
I would like to also do something similar with about 60 leds (2V 20mA each, 10 sets of 6) and have them slowly fade in in about 10 seconds and then remain at full brightness.
Any help appreciated
I however just want an automatic pre defined ramp up that happens everytime 12V is applied, being able to alter the speed thereafter is not required.
I would like to also do something similar with about 60 leds (2V 20mA each, 10 sets of 6) and have them slowly fade in in about 10 seconds and then remain at full brightness.
Any help appreciated