How to implement a deadband

[GTS dude]

Awesome PID controller - Brett, thank you very much for your great work!

I have build a BBQ controller, that controls one of the burners of my gas grill with a servo. Works good so far, but I see some slow oscillation of the output around the setpoint and I wonder how I can set a deadband around my setpoint where the PID does not change the output to reduce the servo movement.

Best regards,

Mark.