Hi there. Got my UNO REV3 today and I've tried every single guide I could find from choosing the inf from the folder (which doesn't work, at all. It says it's incompatible with win7x64) to choosing drivers from the list (which doesn't include the Arduino drivers anywhere. It just isn't there).
So there I am, pissed as a goat almost smashing the contraption to shreds with my mighty horns. Nothing is working, the Arduino LLC driver isn't in the list, can't choose the inf file because it only gives errors…
I'm lost, what to do folks? The red LED on pin13 is blinking on and off when I connect it as well as the LED indicating that it's on is lit. No response from the RX and TX LEDS and the software can't find it, of course…
The device is still Unknown for Win7. I've tried different usb ports too.
Go to "Start" and type "devmgmt.msc" in the search box and hit "return".
You should have the device manager.
With the Arduino plugged into a USB port, what shows under "Ports (COM & LPT)"?
Does the window refresh if you unplug the Uno?
The R3 should show up in Ports (COM & LPT) in the Device Manager tree. The driver that is installed on my Win 7 64 bit machine is Driver Version 5.1.2600.0. Make sure you pick the driver that is NOT in the FTDI USB Drivers folder. My path is: C:\arduino-1.0.2\drivers\Arduino UNO.inf Open and run it. Shutdown (to initialize the driver) and check Device Manager again. It should indicate that your UNO is listed in the Ports section.
As said in the first post, I've tried updating the driver through device manager, which says it's an Unknown device. Everything works perfectly fine on my laptop with Win7U x32. I got it from eBay, but it's the original one from this website. Not a reproduction.
The Arduino team has created a test version of the signed drivers.
This will be included in the next version of the IDE, but you can download it from here:
The dog jumped on my keyboard and deleted my overly elaborate response!
Here's the summary...
Go to Device manager, find the USB roots and the Generic USB roots. Uninstall all 4 of them. Don't worry, when you reboot, they'll come right back. But this will clear up any garbage in there. Reboot your system. Go to the C:\Arduino 1.02\drivers folder. Double click on the Arduino UNO Rev3.inf file and it will install. Plug your UNO in, it should be happy.
PS the 'red led' says 'counterfeit' as I've recently found out myself.
Louis:
Drivers didn't work. I installed them and still no luck…
Learning:
Already tried that, didn't work. I tried installing the inf earlier but all I get is a message telling me it's not compatible with 64bit windows. The new signed drivers installed fine, but not working.
Everything works fine on my shitty laptop, but not on my desktop comp. It wont accept anything but Unknown Device. Using my laptop for Arduino is a pain in the buttocks, I have to get it working on my desktop somehow.
Since your desktop is not even able to enumerate the USB interface and get the hardware ID from the device, it will not be able to install any drivers for it.
Even if you don't have drivers installed, the system should still show the hardware ID, that is how Windows is able to match the driver to the device.
Is there something unique about your desktop USB interfaces?
Are they USB 3.0?
Do you have multiple USB ports? Have you tried all of them?
I am out of ideas, at this point.
Until your desktop system can enumerate the device and read the hardware ID, you will not get the driver installed.
More questions, does the desktop make the 'failed device connection sound' when you plug in the USB cable? Have you tried the same cable that works on the laptop? I'm like Louis, at a loss for where the problem is. My Arduino and the same 'red led' clone work on both my Win 7 64 bit laptop, and desktop. Are your USB drivers up to date?
Do those desktop ports work with several other devices? Mouse, Keyboard, webcam, etc.?
thetoillmainn:
I'm lost, what to do folks? The red LED on pin13 is blinking on and off when I connect it ...
...
thetoillmainn:
I got it from eBay, but it's the original one from this website. Not a reproduction.
I just checked with Massimo Banzi. You have a fake. They never put a red LED on pin 13 on the Uno.
If the vendor claims it is original I would complain. Alternatively, you might find the device driver that works with the USB chip firmware they put on it. If you have another one, or a ICSP programmer, you might be able to re-flash the USB chip.
Louis:
No USB3 in use, all ports working on anything else. Tried all of them with the UNO without luck, using the same USB cable.
Learning:
No sound, just the message. Using the same cable, works with no problems on my laptop.
Nick:
Good to know it's a fake at least, I was wondering about the red LEDs. Apart from them the board looks 100% authentic and works with no problem on my laptop.
Seems this is impossible to fix, I'll get another board and test that. Thanks for all the help folks! If you've got any other suggestions I'm happy to try them out.
As I said, reflashing the firmware on the USB chip (assuming you have the 6-pin ICSP header near the USB socket) may solve your problems. Can't promise though.
i had the same problem, my arduino (with a red led on pin 13) worked fine on my laptop running on windows xp, but never on my desktop running win7 64bit. i tried everything posted online to make it work, but never did. Today, 4 months later, i had to use the USB cable for something else, and had to replace it for my arduino, and suddenly, my arduino works on win7 x64. brought back the old usb cable, the one that came with the arduino board, and the board doesn't work again.
my conclusion, is that the USB cable is the problem. now why is it that it works on my laptop but not on my desktop, i have no idea. if anyone does, i would like to hear it.
so, if your board still doesn't work, try a different USB cable and let me know if it works.
I have seen differences in cable quality that will cause a USB 2.0 device only to show up as a Low Speed device. Usually these are cables that you get for 0.99 from Fry's, etc.
If the cable specifically says it is USB 2.0 or High Speed compliant, then it will be of sufficient quality for anything used on the Arduino.
Technically the UNO is only USB 1.1, so any USB cable should work, but I think there is probably a lot of differences in quality from one cable to another.
I know this doesn't give you any specific answer to your question, but I am not surprised that a different cable fixed your problem. I have seen it too many times.
I had a similar problem installing today on a new computer with USB 3.0 ports (Win 7 x64). I tried several cables and other obvious things. No joy - Windows wouldn't recongize the UNO Rev3 - just unknown device. Finally I tried "Add legacy hardware" in the device manager. Select "manually install", then "Ports", then "Have disk". Browse to the Arduino/Drivers directory. Then select the appropriate driver from the list that is presented (in my case Arduino UNO Rev 3). It then fails to activate the device, but you now have a port for the UNO. A hardware scan in the device manager then does the trick. Can't explain why, but it worked for me.
SAMERJAX:
i had the same problem, my arduino (with a red led on pin 13) worked fine on my laptop running on windows xp, but never on my desktop running win7 64bit. i tried everything posted online to make it work, but never did. Today, 4 months later, i had to use the USB cable for something else, and had to replace it for my arduino, and suddenly, my arduino works on win7 x64. brought back the old usb cable, the one that came with the arduino board, and the board doesn't work again.
my conclusion, is that the USB cable is the problem. now why is it that it works on my laptop but not on my desktop, i have no idea. if anyone does, i would like to hear it.
so, if your board still doesn't work, try a different USB cable and let me know if it works.
I found one of my highspeed cables, and now it works. Tried lots of cables with no success, but this one changed that. It's weird how things seem to have a life on its own sometimes…