| | | | | | | | [] Hardware    - NXT    - Tetrix    - RCXLabVIEW Education EditionLEGO MINDSTORMS NXT-G SoftwareROBOLAB SoftwareSensorsTeaching Resources > LEGO MINDSTORMS NXT-G Software What is the NXT-G Compare block for? 19th of April, 2010 (8 ) 100% 0% The Compare block (located in the 'Data' section in the 'complete palette' tab on the left side of the screen) is used to compare two numerical values. It outputs 'true' or 'false' depending on whether the condition chosen in the configuration panel is satisfied. The attached program, compare.rbt, makes the robot move forward if the light sensor intensity is above 50 and backwards if it is below 50.   Please note that there are many alternatives to the Compare block. Many of the other blocks, including 'Wait For,' 'Loop,' and 'Range,' have functions dealing with the comparison of values.    :    : * : * :   Can the NXT rotation sensor sense negative and positive rotation (counterclockwise and clockwise)? How can I the NXT-G Timer block? What is the NXT-G Math block for? How can I do I combine the values of different sensors in NXT-G? For example, how could I program the motors to start only when there is combination of a loud sound AND a bright light? What is the NXT-G Logic block for? compare.rbt (305,124 )

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