I have a question regarding the raspberry pi 3 and 2 with pwm servo control.
My development board is a Pi3 with touch screen, Pi Cobbler and powered bread board.
My Robot is a pi 2, 2 x stepper motors, battery pack and a servo operated ultrasonic module.
I test everything on the development board and can control the servo perfectly - my code works
however when I use the same program on the robot (pi2), the servo rotates all way left and refuses to move to any other position - all GPIO ports and wiring are the same - if I ground both pi together move the signal pin then it ' ll run on the PI3
Anyone got any ideas???