MG995 Servo Motor Tower Pro, 180 Degree Rotation

Operating voltage range: 4.8 V to 7.2 V
Stall torque: 9.4kg/cm (4.8v); 11kg/cm (6v)
Operating speed: 0.2 s/60º (4.8 V), 0.16 s/60º (6 V)
Rotational degree: 180º
Dead band width: 5 μs
Operating temperature range: 0ºC to +55ºC
Current draw at idle: 10mA
No load operating current draw: 170mA
Current at maximum load: 1200mA

Product details

MG995 servo is a powerful servo motor that is capable of spinning and controlling things that a small hobby servo motor could never accomplish doing. It comes with a bunch of accessories so you could connect it easily with the outer world, and it’s being controlled like every other servo motor, via PWM.

Two Factors play important role in controlling the servo motor:

Frequency of PWM: MG995 takes in PWM signal of frequency 50Hz and any higher and lower frequency PWM will lead to error. As shown in figure the every single cycle of PWM needs to be 20ms width for 50Hz frequency.
Duty cycle of PWM: The duty cycle of PWM (or ratio of ON time to total cycle time) determines the position of servo axis. If we provide a PWM signal of 0.5ms ON time over 20mS complete cycle, the servo axis will move to 0º.