Keyestudio 4DOF Manual page 87

Name
Servo 1
（baseplate）
Servo 2
（right side）
Servo 3
（left side）
Servo 4
(clamp claw)
0°
Rotate
toward the
rightmost
Rocker arm
connected to
Servo 2
draws back
Rocker arm
connected to
Servo 3
stretches out
close
180°
Rotate toward
the leftmost
stretch out
draw back
open
84