Question about Lego Media Lego Mindstorms

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My Lego Mindstorms NXT 2.0 Color Sorter Machine says "green" whenever I activate the program (when there isn't any green ball under the sensor). It also usually says "try again" when there actually is a green ball under the color sensor. I have re-done the program three times, but it hasn't made any difference. Please help!

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If you're getting the program from the RoboCenter, double check that all off the blocks are set right. If that doesn't work, open the programming software, click Tools> Update NXT Firmware. Connect your NXT with the USB (or it might work with Bluetooth...) Then click Check and download the latest firmware (or just click download). Don't be alarmed if the display turns off and the brick makes a ticking noise.

Posted on Aug 31, 2010

  • Yaseen157 Jan 02, 2011

    hey that's not it! basically, the colour sensor lights up and shoots light at the target like any other colour sensor does to find the colour of something. In the nxt, the light from the sensor is mostly green rather than blue or red. when the sensor starts up, the green light reflects off the white plastic pieces back into the sensor triggering the colour 'green'. Also if using RoboCenter, instead of making the program yourself, if you want to have everything right quickly, click 'Sample Program'.

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Just look at the comment i wrote on 'loosliashton' solution

Posted on Jan 02, 2011

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