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Chapter 8 Patches Head Turning System
CHAPTER 8
Patches Head Turning System
The main components of this system consist of the head turning motor, 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 Pumper. The receiver sends this signal to the microcontroller on
the Patches board. The motor control circuit is on the Patches 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 right or left.
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 Patches Board mounted on the inside the chest of Patches.
Feedback pot- Directly below the motor.
Set screw- On the inside of the neck.
Troubleshooting Head
The head is out of position but operates:
The head could have been hit out of position or the set screw is loose. Try to move the
head manually. If you can, move it back into the correct position and make sure the set
screw is tight. The set screw can be accessed through the shoulder access hole. If you
cannot manually move the head, you may need to loosen the set screw re-position it and
then tighten the set screw.
The head 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 head turning motor will need to be lowered clear of the tubing that
joins its shaft to the shaft of the head turning motor. Now you will have access to be
able turn the shaft of the feedback pot until the head comes back into center position.
Bolt the pot back up into its correct position.
The head motor is not operating:
1. Check the motor wire to see if came disconnected at its in line connection.
2. The Patches board is not getting power- If this is the case you would not be getting
eyelid movement. Check the fuse on the fuse block:
Look at the red and black wire bringing power to the Patches board. If you have a
Voltmeter, check for 12 Volts going to the board. Is there 12 Volts; a broken wire?
Summary of Contents for Patches & Pumper
Page 1: ...i Patches Pumper Robot Operating Manual Version 6C ...
Page 27: ...23 Chapter 4 Cassette Tape Player System Diagram Cassette Tape Player ...
Page 28: ...24 Chapter 4 Cassette Tape Player System Diagram ...
Page 47: ...43 APPENDIX A ...
Page 51: ...47 Appendix A Robot Functional Block Diagram Robot Functional Block Diagram ...
Page 52: ...48 APPENDIX B ROBOT PARTS IDENTIFICATION ...
Page 62: ...58 Notes ...
Page 63: ...59 Technical Tips ...