up vote 2 down vote favorite

looking for advise, pulled my Mindstorms 8547 kit out of storage and started to play with it after several years of inactivity. Found that the Color Sensor, Ultra Sonic Sensor, and the postion read back on motors all do not function. I downloaded the latest software and version 1.31 firmware.

Any idea what is going on, do I need to go back to a previous version firmaware to get things to work as they did originally?

Any advice is aprreciated, thank you.

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  • Is there any chance it's simply your code that isn't working? Could you add a screenshot of the program you're using to test the functions? – MindS1 Nov 27 at 1:40
  • Using the "View" directly from the NXT brick to test the sensors, just get all ?????on the display with the color or ultrasonic sensor plugged in. – Paul Nov 28 at 22:34
up vote 0 down vote

Check for 5V on the two middle pins of the motor connectors (plug a cable into the brick, no motor on the other end, and measure volatege on the contacts of the open other end). NXT/EV3 have separate power to all the sensors, if there's a short (failed capacitor or similar) or the power chip failed then the brick will still work, but the sensors won't get power.

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