I followed the Easy Servo instructions, however it doesn't work. I'm running Rpi3B and Octoprint 1.9.3. I have my one servo connected to GPIO12. The GUI keys under Octoprint nor the M118 command works. I have the servos hooked up to a separate 5v power supply. PiGPIO is active as well. Are there any compatibility issues? Any thoughts on what might be wrong? Thanks.
Make sure you tie the grounds together from your pi and your other Source. The PWM for the servo is level set by the pi output so if they are not ties together at ground/dc- you may have issues getting your servo to respond.
You were spot on. Thank you.