VEX Motors & Servos J.M. Gabrielse

Motors & Servos Look Alike Check the labels carefully! Only old motors have three wires.

Servos servos CAN turn to a specific angle (0°- 120°) position attachments exactly perfect for claws

Think About It… Servos only turn part way around (120°) CANNOT make gears or wheels spin around! How many degrees would a gear, or a wheel need to function properly?

Degrees of Movement Servo Movement (120°) Motor Movement (360°)

Motors Motors make attached axles spin at a set speed. Perfect for wheels and gears! Motors CANNOT turn to an exact position.

High Strength Motors (393) Standard Motors (269) standard motors light weight batteries last longer High Strength Motors (393) give 30% more torque or 30% more speed (if you change the internal gears) heavy reduce battery life J.M. Gabrielse

Command Joystick Motor Servo Forward (+127) Neutral (0) Backward (-127) J.M. Gabrielse

Motor Ports 3-wire motors: ports 2-9 2-wire motors: port 1 or 1011

Should these be servos or motors? Answer: motors since they are attached to gears & wheels.

Should these be servos or motors? Answer: motors since they are attached to gears & wheels.

Should this be a servo or motor? Servo: Claw directly attached to servo, only needs to rotate < 120°

Should this be a servo or motor? Servo: Claw directly attached to servo, only needs to rotate < 120°

Should this be a servo or motor? Answer: motors since they are attached to a gear that needs to turn all the way around

Should this be a servo or motor? Answer: motors since they are attached to a gear that needs to turn all the way around

Resources Vex Inventor’s Guide: 3·8 - 3·9