Home › Forums › Microcontrollers › PIC Microcontroller › Unexpected behaviour of 12V DC Motor with PIC Microcontroller › Reply To: Unexpected behaviour of 12V DC Motor with PIC Microcontroller December 18, 2015 at 12:23 pm #11927 Ligo GeorgeKeymaster Ripples in the 12V rail will be coupled to 5V rail also and DON’T FORGET to make ground common when you are using separate power supplies.
