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Instructions
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  1. Connect the black wire from GND on the Arduino board to the black row of the breadboard.

 

STEM Connections

This makes the entire black row of the breadboard behave like GND and will allow both Servos to be connected to GND using the breadboard.

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Implementation
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Because there are multiple GNDs on the Arduino board, this step could actually be skipped and the black wires from the Servo could be connected directly to 2 of the GND pins. This adjustment is especially helpful if more than 3 devices will eventually be used. Some students may want to include LEDs and Servos on their final project, so having more options for GND is very useful in those cases.

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Troubleshooting
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GND has a wire stuck in it

  1. Use another GND.
  2. Or, a teacher can use a box cutter or pliers to free the wire while the Arduino is UNPLUGGED from any power source.
Instruction Category
Video