Motors Make the world go ‘round By Jackson Greer, Room 305.

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Presentation transcript:

Motors Make the world go ‘round By Jackson Greer, Room 305

How to Power a Motor We wanted to know how to control a motor. Learn how electrical circuits work. And write a program to power it!

Key Terms & Components Circuit: a complete electrical network that has a closed loop giving a return path for the current. Resistor: a passive two-terminal electrical component that implements electrical resistance as a circuit element. Power source: provides electric currents to the circuit. Ground: the terminal point in an electric circuit. Switch: a device for making and breaking the connection in an electric circuit. Electrical conductor: a conductor is an object or type of material that allows the flow of electricity in one or more directions. Breadboard: is a construction base for prototyping of electronics. Transistor: a component that allows you to control the flow of electricity from high current power sources. Motor: a type of inductive device where electric current generates a changing magnetic field, which causes the shaft of the motor to spin around. Diode: a component that only allows electrical current to flow in one direction. Arduino Microcontroller: a computer to execute instructions that will power the circuit.

Arduino + Breadboard

Battery + Motor

Resistor Diode Switch Transistor

Pinwheel

Assembly Steps 1.Run power and ground from Arduino to breadboard. 2.Connect 9V battery and motor to breadboard. 3.Add switch and resistor to control current through the circuit. 4.Place transistor between switch and motor. 5.Connect Arduino to left transistor pin (gate), connect motor to middle pin (drain), and the third pin (source) to ground. 6.Add diode between the motor and power and ground, which prevents back voltage from the motor entering the circuit.

How to Control? The last piece was for us to write a small program that tells the microcontroller to cause the motor to spin when the switch is pressed...

Here’s the Program

Our Circuit