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I made a smart dustbin using arduino, servo motor, & ultrasonic sensor. It worked pretty well for a few number of days. But once I don't know how but the Arduino 'ON' light started to become dim and switched off. I used a 9V HW battery. So I decided to plug in my arduino with a 7V AC charger, still no luck, the arduino did not turn on nor the ON light. Then I plugged the arduino to my PC, the ON light turned on for 2 to 4 seconds and switched off. I realized it became too when I touched the usb port. The ATMEGA chip did not become hot. Please help?

  • why do you expect the chip to become hot? – jsotola Oct 8 at 18:01
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    Unplug everything (servos and sensors) and try again. – Gerben Oct 8 at 18:54
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If the USB chip is hot, you are out of luck.

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