Data Sheet

59 : circuit 3a
TROUBLESHOOTING
The servo doesn’t
move
Check the wiring on your servo. Make sure the red wire on the
servo cord is connected to 5V, the black wire is connected to
GND and the white signal wire is connected to digital pin 9.
The servo is
twitching
Although these servos are supposed to move from 0 to 180
degrees, sometimes sending them to the extremes of their
range causes them to twitch (the servo is trying to move
farther than it can). Make sure you aren’t telling the servo to
move outside of the 20–160 degree range.
A
SERVO MOTORS
DISTANCE SENSOR
MOTION ALARM
You’ve completed
Circuit 3A!
Continue to circuit 3B to learn about using distance sensors.
CB
SIK v4 Book Oct 13.indb 59 10/18/17 10:00 AM