You can set the individual servo's Type Property to RAW_us_MODE which allows you to set the "position" in terms microseconds. The valid range for is between 0 and 2750us, but depending on the servo, there might not be any movement at the very ends of that range (0.8 to 2.2ms in your case).
Code: Select all
advServo.servos.Type = ServoServo.ServoType.RAW_us_MODE;
You can verify this in the AdvancedServo-full example when you change the Type to RAW_us_MODE.