Negative Power or Negative Rotation makes robot go backwards. But if both are negative, the robot will go forward! Move Steering Block.

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Presentation transcript:

Negative Power or Negative Rotation makes robot go backwards. But if both are negative, the robot will go forward! Move Steering Block

The lowest motor speed set the turning direction. In this picture, motor “C” (right motor) is zero and lower than 50; therefore, the robot will turn right Move Tank Block

Wheel's rotation sensor cannot be used to detect body rotation; one wheel rotation is 17 CMS. "1 rotation" in the Move Steering Block's means one rotation of the robot's wheels

Turn in Place: Both wheels rotate in opposite directions Swing Turn or Wide Turn: One wheel stays the other rotates

At a lower speed you can better control robot’s movements, especially when going backwards and turning, and line tracking too! Place a wait block before/after turns for more accurate and sharper turns Use Reset Motor Blocks from the Sensor Palette to recalibrate motors rotation sensors and make sure your robot does not lean to the sides. This will happen after the robot travels distances longer than four rotations

Time is considered a sensor Using sensors over rotations makes robots more autonomous Ultrasonic Sensor readings less than 10 cms will not be accurate

Wire sensors to the correct port!

If too close to surface will not sense reading accurately. Should be a penny away Using thresholds for reflective light is useful. Take high and low readings add values and divide by two to get your threshold value

Sometimes color sensor does not sense accurately the color reading. Go to view mode and try using the value of what the sensor is sensing in addition to the color desired. Put both color values when selecting the colors in the color block to make sure it reads it.

 Go to File Navigation  Select desired project once to open it  Select the Project File by clicking twice a box will appear with delete icon option  Click check mark to delete entire project