Hi,

Is it possible to determine which power source is being used?

I'd like to be able to tell if an external power supply is being used, and am thinking about using a resistor voltage divider to bring Vin down into the 5V range so that I can send it to one of the analog inputs, does that sound reasonable?

Thanks!

A full reinstall of Windows 7 64-bit cured the problem. 

I've had to resort to running both the Arduino IDE and Visual Studio in a VMware XP virtual machine in order to be able to access my Uno and Mega on this Windows 7 64-bit machine. :sigh:

[above]

You want driver in the folder above the FTDI drivers, not the FTDI driver.

Our network policy doesn't have anything defined under "Devices: Unsigned driver installation behaviour". Should it?

It doesn't work as administrator, and I'm using a standard Windows 7 install.

Could removing SP1 from Windows 7 be the cause of the problem? I had to take it off as it broke ADO compatibility with desktop programs I develop.

I get that dialog too, and I click on "Install anyway", but when it gets to the end of the install it comes up with  a box saying that it failed to install because the driver wasn't signed!

It's all very strange...

That setting is not there by default in Windows 7 64-bit, I had to go into Windows\inf\sceregvl.inf and add stuff to enable it, but that doesn't make any difference.  I am currently trying to change the group policy to ignore unsigned driver errors.

OK, I can now get the driver to install if I disable Driver Signing Enforcement on boot-up but it's broken again if I reboot normally.

Is there a way of making that driver install permanent? I don't want to have to press F8 and get into the boot menu every time I start Windows.

From your diagram, it looks like when the button is pressed the line is pulled up to 3.3V, but when it is open, the input is floating so its value can vary. You might want to add a pull-down resistor so that the input is definitely low when the button isn't being pressed.

Thanks eried and karlok. I've tried installing the enhanced IDE (solution 3) but it still says that there is a problem with installing the drivers because they are unsigned.

I admit I'm a bit reluctant to try 2 because the driver is a built-in Windows USB driver and I don't want to risk messing up my work PC!

Thanks for the suggestion, but I've manually re-installed the drivers many times without success. It gets right through the install procedure, asks if I want to install an unsigned driver, I click OK, then when it completes it brings up a message saying that it couldn't install the driver because it wasn't signed.

[cannot]

Hi all,

I am starting to lose the plot on this one.  I've got an Uno R3 and a Mega 2560 R3, and both are exhibiting the same problem: I cannot get Windows 7 (64 bit) to install the drivers. I know that the Arduinos are OK because I can access them using a Linux VM on the same Windows 7 machine, but the Windows machine itself won't connect to them.

I've tried all of the tips I can find online, I've turned off driver signing, everything I can think of, and it just will not work. The Arduino will be communicating with a .NET program on the PC, so I really need to get it working!

Any suggestions gratefully received while I still have some hair left!  TIA.

Will that shield tie the Leonardo D11/12/13 pins to the ICSP pins?

I need to be able to use both independently.

[and]

Hi all,

I haven't been able to find a definitive statement whether or not the Arduino Motor Shield R3 is compatible with the Leonardo?

I need to be able to control a DC motor, monitor the current and access an SPI port, so I cannot use the Motor Shield with a Uno, but the Leonardo would be ideal.

I'm prepared to modify / write a library if necessary, I just need to know if the two can work together before buying the kit!

Thanks!