Chapter 8 Character Head Turning Motor System - Robotronics Toby Tire Robot Operating Manual

The main components of this system consist of the arm motors, motor control circuit, and
the feedback pot. When you move the joystick on the radio control, a signal is sent to the
receiver in the Robot. The receiver sends this signal to the microcontroller on the robot. The
motor control circuit is on the Character board. The motor control circuit is directed by the
signal to send 12 Volts to the motor and in what polarity. What polarity is sent to the motor will
cause the motor to move up or down.
The job of the feedback pot is to track the position of the head and continually relay information
to the motor control circuit and micro-controller so that when you release the joystick and it goes
back to center, the head also goes back to center.
Location of Parts
Motor control circuit-On the Character Board mounted on the inside of the main box.
Feedback pot- directly below the motor.
Set screw- on the motor hub.
The arm is out of position but operates:
This is not likely because the arm is kept in position on a keyway. Check the set screws for
tightness.
The arm motor is keeping the head position to the extreme left or right:
1. The in line connector to the feedback pot has come disconnected.
2. The feedback pot shaft could have slipped out of position. The feedback pot which is a blue
pot just below the arm motor will need to be adjusted. Loosen the pot slightly, move it until
the arm is in the right position and then tighten the pot again.
The arm motor is not operating:
1. Check the in fuse in the main fuse block.
2. Check the motor wire to see if it came disconnected at its in line connection.
3. The Character board is not getting power- if this is the case you would not be getting eyelid
movement. Check the fuse inside the main electronics box. See the main electronics box
diagram for location of the fuse.
Look at the red and black wire bringing power to the Character board. If you have a
Voltmeter, check for 12 Volts going to the board. Is there 12 Volts; a broken wire?
CHAPTER 8 Arms
Troubleshooting - Arms
Arms System 31