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Topic: Arduino uno not showing on computer (Read 332 times) previous topic - next topic

NoemieD

I have an Arduino Uno and months ago it used to work on my Hp notebook. But that computer wasn't working anymore so I bought another one but when I was connecting the board on the new one (still HP windows 10) the LED will light up but I will not be able to see the board. And the port menu on Arduino IDE will be grayed out.

I do not know if I did something wrong on it, perhaps I put too much power on it, using batteries. I tried changing USB cable and connecting it to another HP windows 10 computer, still wouldn't work.

Please, how can I fix this?

CrossRoads

Did you install the driver for the USB interface?
Designing & building electrical circuits for over 25 years.  Screw Shield for Mega/Due/Uno,  Bobuino with ATMega1284P, & other '328P & '1284P creations & offerings at  my website.

NoemieD

Sorry I'm very new to this. I was not aware of drivers we were meant to install. What are you talking about please?

DrAzzy

If it's an official board, the drivers should be installed when you install the IDE.

If it's one of the inexpensive clones, it probably has a different serial chip on it (usually the CH340G) - the drivers for serial chips not included in any official boards are not included with the IDE, and have to be downloaded. Check the markings on the black chip near the USB port - official boards and clones that use the same chip will have a  16u2 (a square chip); CH340G based clones have a rectangular chip marked WCH340G (where the W is a stylized logo, not a standard "W"). If its a CH340G interface chip, google "ch340g drivers" and your operating system, download and install (if this is the case, you probably did this long ago when you got the board and forgot about it).
ATTinyCore for x4/x5/x61/x7/x8/x41/1634/828/x313 megaTinyCore for the megaavr ATtinies - Board Manager:
http://drazzy.com/package_drazzy.com_index.json
ATtiny breakouts, mosfets, awesome prototyping board in my store http://tindie.com/stores/DrAzzy

NoemieD

It is an official board and like I said it used to work with my previous computer without me having to do anything to it. But thanks for the help.

NoemieD

Also the computer is not making any sounds when I connect the Arduino to it.

DrAzzy

Is anything showing up in device manager? Any unknown devices?

If there's no noise on connecting it, and nothing showing up in board manager, either the USB cable is bad (this sounds silly, but there has been a real plague of bad USB cables lately), or the board is damaged. The 16u2 on official boards is, unfortunately, easy to destroy through (electrical) abuse.
ATTinyCore for x4/x5/x61/x7/x8/x41/1634/828/x313 megaTinyCore for the megaavr ATtinies - Board Manager:
http://drazzy.com/package_drazzy.com_index.json
ATtiny breakouts, mosfets, awesome prototyping board in my store http://tindie.com/stores/DrAzzy

Nikosant03

Hi, try the following

- Replace the cable
- Try connecting the Arduino on a different PC
- Did you try a different port?
- Go to device manager -> Ports section, can you see your board



In case you don't see your device reinstall the drivers located at the path showing below. You can install either the 64bit or the 32bit driver



After the installation, check the device manager again. Your board should appear on the port section.

Good luck



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