Arduino Overheating Instantly within a few seconds after connecting with pc even with nothing connected

Using Arduino Project Guidance
1

I just bought a new arduino uno. It's only my 3rd day with it. I connected it to my pc with USB and within some seconds, the chip located in its center(most probably its processor) gets excissively heated up. Please provide solution for it.

Edit: I checked by connecting it with a power bank which supplies only 5V and still it overheated. This assured that is not a case of overvoltaging

2

Welcome to the forum

Have you ever had anything connected to the Uno ?
What type of surface is the Uno resting on ?

3

Its lying just on a wooden table. Yeah I have tested by making some simple LED chasers and some code for receiving signals from a TV remote using IR receiver

4

Were the LEDs powered from the Arduino 5V and GND pins and if so how many of them were there ?

5

No. They were connected with Output pins and GND. but I tried powering a geared motor directly using 5v and GND.
By the way I have tried to upload a blank code and noticed that its not uploading and just keeps on loading

6

That could be a problem if it drew too much current. The Uno is not designed to be used as a power supply

7

So now what can I do? Is there any solution for this :pensive: :sob:

8

I will take a SWAG and say you fried it when connecting the motor. Here are some things to keep in mind:
Gil's Crispy Critter Rules, they apply to processor hardware:
Rule #1. A Power Supply the Arduino is NOT!
Rule #2. Never Connect Anything Inductive to an Arduino!
Rule #3 Don's connecting or disconnecting wires with power on.
Rule #4 when first starting out, add a 220R resistor in series with both Input and Output pins. (LarryD)
Rule #5 buy a DMM to measure voltages, currents and resistance. (LarryD)
Violating these rules tends to make crispy critters out of Arduinos.

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9

Is your ATMega328 chip a

  1. long skinny thing in a black socket
    or
  2. small black square soldered directly on the board?

If '1', you can replace it

10

Of course there is.
Tell us exactly what you want to do.

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11

If you are not comfortable changing the chips and soldering them properly the best solution is to purchase another Arduino.

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12

The Uno is a great piece of kit; but for beginners my choice would be a Nano or Micro and a breadboard.
Why?
You can connect parts easily without messy wires
you can buy 3 for the price of a Uno.

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13

Thank You very Much friends. I have talked to the seller. My Arduino was in warranty and I am getting a free of cost replacement. :blush::blush::blush:

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14

Thank you very much. I will keep this in mind while making my future projects

15

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