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Lab 3

Lab 3. Braitenberg Vehicles. TAs: Somchaya Liemhetcharat Si Yang Ng. Who is Braitenberg?. Valentino Braitenberg. What is a Braitenberg Vehicle?. Machine designed to produce complex behaviors based on simple connections between its sensors and actuators

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Lab 3

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  1. Lab 3 Braitenberg Vehicles TAs: Somchaya Liemhetcharat Si Yang Ng

  2. Who is Braitenberg? • Valentino Braitenberg

  3. What is a Braitenberg Vehicle? • Machine designed to produce complex behaviors based on simple connections between its sensors and actuators • In our case, we’ll be using light sensors

  4. Basic Concept • Each robot has a pair of light sensors on the front • Robot A: Left sensor controls left motor and right sensor controls right motor • Robot B: Left sensor controls right motor and right sensor controls left motor • Which robot is a Photovore? • Which robot is a Photophobe?

  5. Your Assignment • Build a Braitenberg Vehicle that: • Drives towards a stationary 60W light source • Stops autonomously or by switching off the light source • Grading Criteria • Each team is given three attempts • Points are awarded based on distance from light • Full score is awarded if distance is less than 6” • EXTRA CREDIT: Stops autonomously within 6” of the light source

  6. Layout • Robot will be placed 12-24” from light source • Robot can be angled at ±45º away from the light

  7. Suggestions • Don’t use a fixed threshold value to detect light changes • Subtle changes in sunlight or the opening of a window can cause your threshold value to become useless • Use Lego pieces to narrow the light sensor field of vision • This can make a world of difference in a robot’s behavior • Build a robot platform which has 6”X6” foot print • It will save you a lot of work on later labs

  8. Demo Date • Tuesday February 6th, 2007 • During Recitation 3:30PM-4:20PM • In the Robot Education Lab (REL) • Please present a copy of the grading sheet to your grader at the demo

  9. Questions?

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