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61  Using Arduino / General Electronics / Re: problem with arduino mega and relay module on: November 29, 2012, 11:35:34 am
Showing us how everything is connected would be a good start.
62  Using Arduino / General Electronics / Re: compatibility w/ dSpace board on: November 19, 2012, 11:40:34 am
The dSpace boards http://www.dspace.com/en/inc/home/products/hw.cfm are PCI/ISA interface boards for plugging into a computer.  Are you referring to the dSpace connector/LED panels?
63  Using Arduino / Installation & Troubleshooting / Re: Mega 1280 only working when set as ADK 2560 on: November 16, 2012, 05:18:27 pm
The NEW Seeeduino Mega's ARE 2560's.  Are you certain that you have the older 1280 version?
64  Using Arduino / Installation & Troubleshooting / Re: Help. Arduino IDE does not run on MAC OSX 10.7 on: November 16, 2012, 05:06:15 pm
Launch Terminal from /Applications/Utilities/ and type the following command:  java -version

Let us know what it says.

A recent Apple OS X update actually REMOVED Java.
65  Using Arduino / Installation & Troubleshooting / Re: Arduino ONU Rev3 driver crashes Windows when entering sleep mode on: November 12, 2012, 02:37:18 pm
What do you mean by "the USB com port driver crashes Windows when entering sleep mode or when shutting down Windows?"  Give specific details of what is happening, including any error messages.
66  Using Arduino / Installation & Troubleshooting / Re: Windows 8 stops Arduino 1.0.2 from running on: November 11, 2012, 12:36:45 am
Considering that SmartScreen is 99% false, I recommend disabling it.

Follow the instructions given below to disable it.

Step 1: Open Action Center. To do this, right-click on Action Center icon (the flag icon) in notification area (system tray) and select Action Center.

Step 2: In the left pane, click Change SmartScreen settings to open Windows SmartScreen dialog.

Step 3: Here, you will see three options:
 a. Require approval from an administrator before running unrecognized programs from the Internet (recommended)
 b. Give a warning before running unrecognized programs from the Internet, but don’t require administrator approval
 c. Turn off Windows SmartScreen
67  Using Arduino / Installation & Troubleshooting / Re: Problem with the talking to the cloud exercise on: November 06, 2012, 02:17:20 pm
Where is this "Talking to the cloud" exercise?  Posting the code here would be a great first step towards helping us to help you.
68  Using Arduino / Installation & Troubleshooting / Re: Windows 8 and Arduino 1.0.1 on: November 06, 2012, 02:14:56 pm
What happens when you plug it in?  Do you get the device insertion sound?  Does Windows say it's installing a driver?  When it does show up under COM 8, can you right-click and tell it to update the driver, and then navigate to the drivers folder to install the driver?  What happens if you do that?  Have you tries to right-click in the .inf file in the driver folder and choose install?  If so, what happens when you do that?  Specific error messages are important here, so please make note of them.
69  Using Arduino / Installation & Troubleshooting / Re: Arduino Software not opening in Windows 8 on: October 30, 2012, 09:01:25 pm
Are you trying to open it from the desktop or from the start screen?
70  Using Arduino / Project Guidance / Re: Getting started with Arduino: Figure 5-7 on: October 24, 2012, 12:32:02 pm
Page 70 of the book recommends the IRF520 MOSFET.  Do you have one of those or anything similar?
71  Using Arduino / Installation & Troubleshooting / Re: Problem with TX LED on: October 24, 2012, 11:45:03 am
I would bet that most of us have done that at one time or another.  Good job figuring that out.
72  Using Arduino / Microcontrollers / Re: Chip samples... on: October 19, 2012, 12:26:50 am
Two days after requesting them I received the following from Atmel:

ATMEGA1284P-PU   MCU AVR 128K ISP FLASH 40-PDIP      3
ATMEGA2560-16AU   IC AVR MCU 256K 16MHZ 100TQFP      3
ATMEGA328P-PN   MCU AVR 32K FLASH 20MHZ 28PDIP      3
73  Using Arduino / Project Guidance / Re: Android Phone to PIC877a via Bluetooth Module on: October 14, 2012, 01:38:01 am
How does this relate to Arduino, or even to Atmel/AVR in general?
74  Using Arduino / Motors, Mechanics, and Power / Re: Arduino becomes unidentified after connecting servo signal cable on: October 07, 2012, 03:53:24 pm
Arduino can't provide that kind of power? I won't check that until tommorow but it's hard to belive in for me. Especially that the specification of the servo (HS 645MG) says that it operational voltage is between 4.8V and 6V (changing the torque respectively) and the servo moves as it's supposed to: the problem is that it blocks the serial communication.

Any other suggestions?


What is happening is that the Arduino is repeatedly power cycling because it cannot provide enough power for itself and the servo.  When the Arduino loses power, it loses all communications with the serial port.  The MORE SERIOUS problem is that YOU WILL DESTROY the Arduino if you keep treating it like this.

You don't HAVE to believe what those of us with DECADES OF EXPERIENCE in electronics tell you about this.  You don't have to believe what those of us that have used Arduino for YEARS tell you about this.  Your choice.  

Since you are so certain that NONE OF US know what is happening, let me just leave a couple of things here for you:

From the Arduino website:

DC Current per I/O Pin   40 mA
DC Current for 3.3V Pin   50 mA

From the ServoCity website regarding the HS-645MG:

Current Drain (4.8V): 8.8mA/idle and 350mA no load operating
Current Drain (6.0V): 9.1mA/idle and 450mA no load operating

Now I'm just a simple man, but in MY WORLD a device (the Arduino) that can provide 40ma is NEVER GOING TO FUNCTION PROPERLY when trying to power a device (the HS-645MG servo) that requires AT LEAST 350ma when operating.  That means that the servo requires 8.75 times MORE current than the Arduino can provide.

But hey, it's your right not to believe this.  PLEASE let me know once you have managed to change the laws of physics so that your hypothesis will work.
75  Using Arduino / Microcontrollers / Re: Arduino Mega2560 R3 pinouts photo on: October 06, 2012, 07:58:21 pm
Very nice!  Thank you!
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