Mosfet switches without a cause

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hi!

i made "quizshow-buzzer" friend consisting of 4 rigid pushbuttons hooked interrupt-pins of arduino leonardo, 4 led-lights inside pushbuttons powered irf 830 mosfets hooked arduino in picture:

http://bildr.org/blog/wp-content/uploads/2012/03/rfp30n06le-arduino-motor-400x218.png

the cables between central unit , buttons 10m long - used cat5 ethernetcables this.

now friend tells me buzzer works pretty well, light on button start glowing without button being pressed.
could caused capacities of long cables or have idea?

i'm waiting few more informations friend (especially if it's light glows or if there "beep" , output on central units display!) , i'm wondering already...

quote from: zimbosmurf on jun 11, 2013, 11:36 am

could caused capacities of long cables


no.

either fault in wiring or software problem.



Arduino Forum > Using Arduino > General Electronics > Mosfet switches without a cause


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