Servo Motor Feedback Signal

This section will explain how to obtain a feedback from the servo motors if there isn't one already. The objective is to read a signal coming from the potentiometer located within the servo motor.

CAUTION: The following steps involve tampering with the servo motor.

Items needed

• Soldering iron
• Thin soldering wire
• Multi-strand 22 gauge wire, 12" long (12)
• Servo motor (12)
• A Phillips head screwdriver or the appropriate screw driver for your servo motor
• A wire stripper

Steps

• Strip one side of a electrical wire
• Be careful not to strip too much wire, as it may lead to electrical shorting
• Disassemble the servo motor by removing the screws
  • Be careful of shaft-side cover of the servo motor as it may fall off and expose the gears
• Carefully remove the bottom-side cover of the servo motor
• Locate the PCB
• Solder the electrical wire on the center terminal as shown :
• Before closing the servo motor, use the hot soldering iron and press it against the bottom-side cover of the servo motor to create a dent
  • This dent will allow the newly soldered wire to pass through the cover
• Close the servo motor casing
• Repeat for all the over servo motors