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Assignment4

Student Learning Outcomes

• Student will be able to apply Ohms law to simple circuits.
• Student will learn how to pick a fuse for a simple circuit.
• Student will learn to calculate Watts from amps and volts.
• Student will learn to control simple DC motors including their speed and direction using an HBridge? or Motor Shield.
• Student will learn to control Stepper Motors, and Hobby Servos.
• ?Student will assemble a “motor shield” kit.
• Student will learn about Pulse Width Modulation (PWM)
• Student will integrate motors into their project.
• Student will learn to consider types of movement as an aesthetic parameter

Motor Shield

• A motor shield will be provided. Two motors will also be provided. We may use a prebuilt HBridge. They are a bit cheaper but since they are not a shield are harder to use reliably.
• https://learn.adafruit.com/adafruit-motor-shield/library-install This is for a V1 Sheild Kit.

1. Exercises 1. Learn to control speed and direction of your DC motors using PWM pins. Demonstrate this in class or with video.
2. Learn to use a hobby servo. Demonstrate this in class. 3. Learn to use a stepper motor. Demonstrate this in class or with video. Stepper motors will be available.

Exercises due on class 19

1. Make a body to hold the two motors, a omni directional wheel, battery, and arduino is due on day 21.

Make your car demonstrate through motion one of the following states,

• Indecisiveness
• Nervousness
• Impulsiveness
• Drunkenness
• Decisiveness
• Fear
• Calm

Extended Tutorials https://learn.adafruit.com/all-about-leds/what-are-leds-used-for KVL (Kirchhoff's Voltage Law)

• Relay control

• Transistor control of motor

Lectures, Demonstrations Relays and Transistors as Switches Ohms Law, determining current, sizing fuses. Kirchhoff’s law and simple LED circuits. PWM