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1  Using Arduino / Networking, Protocols, and Devices / ATmega32U4 serial flow control on: October 16, 2013, 09:26:39 am
Hi all,

The 32U4 used on the Micro and Leonardo has the capability to use RTS/CTS hardware handshaking, but on the Arduino boards, the  CTS line is used for the TX LED. Is there any way of changing this in setup() to enable full hardware serial flow control, or is it hard-coded in the bootloader or some Arduino library and cannot be changed?

Failing that, does anyone know of a serial port library which emulates hardware flow control on IO pins for the 32U4 or 328P?
2  Using Arduino / Project Guidance / Determining power source on: June 06, 2013, 04:25:17 am
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!
3  Using Arduino / Installation & Troubleshooting / Re: Windows 7 and driver signing on: June 05, 2013, 04:14:16 am
A full reinstall of Windows 7 64-bit cured the problem.  smiley
4  Using Arduino / Installation & Troubleshooting / Re: Windows 7 and driver signing on: January 15, 2013, 07:26:11 am
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:
5  Using Arduino / Installation & Troubleshooting / Re: Windows 8 x64 + Arduino UNO? on: January 14, 2013, 08:45:13 am
You want driver in the folder above the FTDI drivers, not the FTDI driver.
6  Using Arduino / Installation & Troubleshooting / Re: Windows 7 and driver signing on: January 14, 2013, 06:43:00 am
Our network policy doesn't have anything defined under "Devices: Unsigned driver installation behaviour". Should it?
7  Using Arduino / Installation & Troubleshooting / Re: Windows 7 and driver signing on: January 14, 2013, 05:37:21 am
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.
8  Using Arduino / Installation & Troubleshooting / Re: Windows 7 and driver signing on: January 11, 2013, 11:37:51 am
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...
9  Using Arduino / Installation & Troubleshooting / Re: Windows 7 and driver signing on: January 11, 2013, 10:52:17 am
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.
10  Using Arduino / Installation & Troubleshooting / Re: Windows 7 and driver signing on: January 11, 2013, 04:39:12 am
OK, I can now get the driver to install if I disable Driver Signing Enforcement on boot-up smiley 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.
11  Using Arduino / Installation & Troubleshooting / Re: Problem Input Arduino Due on: January 11, 2013, 04:31:24 am
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.
12  Using Arduino / Installation & Troubleshooting / Re: Windows 7 and driver signing on: January 11, 2013, 03:57:59 am
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!
13  Using Arduino / Installation & Troubleshooting / Re: Windows 7 and driver signing on: January 10, 2013, 10:39:01 am
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.
14  Using Arduino / Installation & Troubleshooting / Windows 7 and driver signing on: January 10, 2013, 06:24:01 am
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.
15  Using Arduino / Motors, Mechanics, and Power / Re: Motor shield compatibility with Leonardo on: December 13, 2012, 04:09:04 am
Will that shield tie the Leonardo D11/12/13 pins to the ICSP pins?

I need to be able to use both independently.
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