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IMDL Fall 2008

IMDL Fall 2008. David Meadows Robot name : The Brave Little Roaster. The Brave Little Roaster. Detecting a Flame. The UVTron sensor is used to detect an open flame in the room. The sensor needs to have direct sight with the flame from up to 10 -15 feet.

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IMDL Fall 2008

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  1. IMDL Fall 2008 David Meadows Robot name : The Brave Little Roaster

  2. The Brave Little Roaster

  3. Detecting a Flame • The UVTron sensor is used to detect an open flame in the room. • The sensor needs to have direct sight with the flame from up to 10 -15 feet. • Once the sensor has detected the flame, the robot will slow down and start to locate the flame.

  4. Locating the Flame • Photo transistors were used to locate where the flame is at in the room. • Two photo transistors were put the bottom deck of the robot and space about 5 inches. The photo transistors were hooked to the A/D Ports.

  5. Locating the Flame (cont…) • When the A/D port output a number less than 220 then the robot stops and knows a flame has been found. • If ((adcOne() - adcZero()) > 10 then the robot will turn right a little • If((adcZero() - adcOne()) > 10 then the robot will turn left a little • After the robot have positioned itself in front of the flame, the robot will back up if too close.

  6. Photo Transistors

  7. High Torque Servo • This servo is used to control the roasting stick that is mounted on top of the robot. • Max torque is 83 oz-in • Max speed .15 sec/60 degrees

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