Instruction Guide: EV3 - The Circuit

In this Lesson we have 1 Primary Instruction Resource:

  1. The EV3 Circuit.PPT

This lesson applies the learning from the previous Circuits and Switches lesson to the particulars of the EV3.

The Four Parts of a EV3 Circuit (see EV3 Circuit.PPT : slide 1)

  • Power Source – Battery
  • Conducting Path – Wires
  • Switch – EV3 brick buttons
    •  Ask students which sensor acts like a simple switch (Touch Sensor)
  • Load – Motors, or other outputs (Brick lights, LCD screen, speaker)

EV3 Insulators, Conductors and Semiconductors

  • Conductors – Wires (slide 1)
  • Insulators – Plastic covers on electronic components
  • Semiconductors – Not as obvious from the outside
    • LED’s on battery pack or color sensor
    • LCD screen on EV3 brick
    •  Mostly inside plastic housings (slide 2)
    • Also found in ultrasonic, color and gyro sensors
    • Also found in motors (slide 3)
    • Black plastics rectangles on circuit board are semiconductor computer chips (slide 4).
      • Note: the history of semiconductors (a.k.a. computer chips) is covered in the Moore's Law Lesson (later in this Unit) and the their design and fabrication is covered in the Creating Computer Chips Lesson (also later in this Unit).
      • Note: This slide still uses a NXT Brick for this example since a picture of the inside of an EV3 Brick has yet to be found, but the circuit board will be similar.