Arduino UNO yellow light fading

Official Hardware Classic UNO R3
1

Hello! I was trying to upload a code in my Arduino UNO board when suddenly, it always disconnects. It wasn't like this the past few days. However, today, it kept on happening until Arduino could not detect my board anymore.

At first I thought it was just the cable, so I used another one but the same thing happened. It wasn't the USB port either. Whenever I would plug it, the yellow light just fades.

I have attached a gif of the situation here. If it is hard to see, in gif, the yellow light just fades as soon as I plug in the cable.

2

What else is plugged in? Disconnect EVERYTHING except the USB port and see if BLINK will load & run. Its a go/nogo test.

3

just my keyboard, mouse, wifi dongle. other than that, only the arduino board is connected.

4

No. What is plugged into the Arduino? Disconnect everything except the USB and then load the BLINK sketch.

5

oh. nothing else. i have disconnected everything.

6

Ok so you have eliminated all but the arduino. HAve you tried another UNO?

7

Post a picture of the hardware setup.

8

With NOTHING but the usb connected to the Arduino, does the BLINK sketch load and run properly? No? Your Arduino is likely toast. Yes, problem is your sketch.

9

If you have access to another Arduino board, try burning a bootloader following Burn the bootloader on UNO, Mega, and classic Nano using another Arduino if after using a different data cable and installing lastest IDE 2.1.0 fails to resolve it.

10

There is a short somewhere on the board, pull out the chip carefully as not to bend the pins, then try powering it.

11

unfortunately, i only have one arduino uno r3 that my computer can detect. the other one, it can’t be read (CH340G) (also, i’m a beginner so i don’t know how that could be fixed)

i plugged my arduino on a power source and the yellow light finally lit up. but the tx and rx lights were consistently on, in addition, my computer could not detect my board anymore.

12

what chip, sir?

13

The dip chip with ATmega328P on it, remove with popsicle stick or something of similar size with great care, to avoid bending the pins.

14

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