Arduino is not showing up in Device Manager

Development Tools IDE 1.x
1

I have an Arduino Uno.

Arduino is not showing up in device manager (not in ports or as an unknown device).

Physically on the board the on light turns on.
Also it looks like it came loaded with the blink program because the orange light is blinking.

I looked through other similar posts and I tried following

  • I tried changing the USB cable. Nothing.
  • I tried changing the PC 3 times. First with the IDE installed on my windows 10 computer.
  • Second time on my windows 7 computer without IDE installed.
  • 3rd time on a MacBook.

Everytime it was the same. Lights turns on, on the board but nothing is registered on the computer.

Any ideas?

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2

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3

thanks. I did everything up to step 5.

At step 5, following happened:
ON and L starts lighting.
No sound appears as it says in the manual.

I just hooked the arduino up with USB.

I tried to start up a terminal (1st time) regardless of the missing sound. It says I don't have a serial port. Do I need an FTDI cable to start writing in the terminal to the board or should I be able to do it with the USB?

it is not easy to get my hands on an FTDI cable in slovakia

1 Like
4

Could you post a decent quality picture of the board near the USB connector should be a smaller IC.

Or if you can read what it says on there and post that back here please.

5

atmel
mega16u2
1522 TH
A2UYBC

I have ordered a new Arduino Uno and I will receive it tomorrow. Then I will see if the problem still exists with the new arduino.

6

It does sound like the 16U2 is pooched.
Becoming a common theme recently.

What have you had connected to the board and how (schematic would be great)
If there is still anything connected remove and try again.

That you cant do a loopback is mostly fatal.
However if you have an external programmer there is still a chance the board could be used.

7

Do you have an FTDI Basic? You can connect that to D0, D1, Gnd and use it for serial loading.
Will have to press reset on the Uno.
Select File:Preferences, and turn on Verbose outputs.
When you see "Compiled xxx of 32xxx bytes", press Reset. Might take a few tries to get the timing right.

8

hi

I dont have an ftdi basic and it is not so easy to find here without having to ship internationally.

Anyway I tried my new Arduino. Registers immediately and no problem. I will send the one I have to repair. I think you are right. The 16u2 is probably not working.

anyway thanks for the help guys :slight_smile: