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2806  Using Arduino / General Electronics / Re: Voltage regulator failed in Mega2650 R3 - micros damaged? on: December 31, 2012, 07:09:08 am
OK. There are other reasons for the fail:
1) Unlucky.
2) Angered the transistor gods.
3) Failed to pay protection to the local mafia.

I use built-in protection features on my electronics. They are called fuses. However, when they protect my devices best, they also throw themselves on the grenade.

Quote
Arduino micro seems to be working find but the problem is that I cannot connect to the board via USB anymore.
This sounds familiar to me. IC7. But that is just me...
((Vin > 10v) && (usbPower == true))
2807  Using Arduino / General Electronics / Re: Voltage regulator failed in Mega2650 R3 - micros damaged? on: December 31, 2012, 06:46:25 am
Quote
From a typical datasheet:  ( http://www.fairchildsemi.com/ds/LM/LM7805.pdf )

• Thermal Overload Protection
• Short Circuit Protection
• Output Transistor Safe Operating Area Protection
So, with all that protection, why did the regulator fail?
2808  Using Arduino / Project Guidance / Re: Possible power issue with Arduino Uno + 2 shields on: December 31, 2012, 05:33:29 am
Quote
...the external power supply I'm going to be using is a radioshack rc battery 7.2v regulated down to i think around 5v ( it was regulated to a safe voltage for all of our servos/the arduino).
What power supply are you using for this failed test? What is the voltage on Vin when you power up the Arduino using the barrel connector?
2809  Community / Website and Forum / Re: UDP NTP Client - NIST Internet Time Service changes on: December 30, 2012, 02:32:35 pm
It appears the playground is having technical difficulties. I can't access anything there either. Hopefully they will get it fixed soon.
2810  Using Arduino / Project Guidance / Re: Possible power issue with Arduino Uno + 2 shields on: December 30, 2012, 05:31:40 am
You did not mention the Vin power supply. What voltage/current is the power supply? If the voltage is too low (less than 7v) or too high (greater than about 10 volts) you may have a power problem with the 5v regulator on the Arduino. It may not be able to provide enough power to the XBox controller without overheating.
2811  Using Arduino / Project Guidance / Re: Possible power issue with Arduino Uno + 2 shields on: December 29, 2012, 06:56:26 am
The USB host shield appears to use SPI. It uses the ICSP connector/pins for the SPI data lines, according to the webpage you posted.

The screw shield does not have the ICSP connector, so the SPI lines are not connected to the USB host when the screw shield is between the USB host and the Arduino.

You could probably fix that by getting a 6 pin (2x3) wirewrap header and drilling holes in the screw shield to get the pins from the Arduino to the USB host shield. Here is that part:
http://www.circuitsathome.com/products-page/components/stackable-2x3-header
2812  Using Arduino / Storage / Re: problem with SD library and PWM at the same time on: December 28, 2012, 05:31:27 am
Your code does not start the SD. Try something like this:
Code:
void setup(){
  Serial.begin(9600); 
  pinMode(10,OUTPUT);
  pwmSetup();

  // call SD.begin first
  Serial.print("Starting SD...");
  if(!SD.begin(chipSelect)) Serial.println("failed");
  else Serial.println("ok");

  dataFile = SD.open("datalog.txt", FILE_WRITE);
}
2813  Using Arduino / Networking, Protocols, and Devices / Re: Help!!! With Ethernet shield read HTML file from SD on: December 27, 2012, 06:45:15 am
That code is not parsing the GET request for the file name. It returns the same HTML doc no matter what the web browser requests. So when your web browser requests favicon.ico or any other image file, like a jpeg or gif, the code returns that web page instead.

edit: This server code in the playground parses out the GET request line and displays it on the serial monitor. It might make it easier to see what you are working with.
http://playground.arduino.cc/Code/WebServerST
When sending an image you will need to send the correct "Content-Type" and "Content-Length" header parameters.
2814  Using Arduino / Networking, Protocols, and Devices / Re: [SOLVED] Arduino Uno R2 and Wiznet 5100. DHCP does not work. on: December 27, 2012, 06:16:19 am
@kquinn: Did you check the ICSP pins and connector? That is the connections for the SPI bus. Are all 6 pins connected properly?

I almost missed your post because this thread is marked [SOLVED]. Maybe you should start a new thread.
2815  Using Arduino / Storage / Re: problem with SD library and PWM at the same time on: December 27, 2012, 05:53:42 am
If you are using an Uno, you can't use digital pins 11-13 for anything but the SPI bus. SD is a SPI device.
D11 = MOSI
D12 = MISO
D13 = SCK
2816  Using Arduino / Programming Questions / Re: Files are being corrupted on my SD card, and I'm not writing to it! on: December 24, 2012, 07:45:42 am
Can you post a link to the SD shield/hardware?

I use an ethernet shield with a uSD card onboard, and it is quite possible to unintentionally "write" to the SD if you do not disable the SD SPI interface when setting up the w5100. Is there another SPI device on the SPI bus?

It can also garbage up the SPI bus like you are seeing by using the SD card without disabling the w5100.
2817  Using Arduino / Networking, Protocols, and Devices / Re: Arduino Uno R2 and Wiznet 5100. DHCP does not work. on: December 24, 2012, 07:10:28 am
Try this sketch. It tests the SPI connection from the Arduino to the shield.
Code:
#include <SPI.h>
#include <Ethernet.h>

byte mac[] = {  0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
IPAddress ip(192,168,2,2);

void setup() {
  Serial.begin(9600);

  // disable SD card if one in the slot
  pinMode(4,OUTPUT);
  digitalWrite(4,HIGH);

  Serial.println("Starting w5100");
  Ethernet.begin(mac,ip);

  Serial.println(Ethernet.localIP());
}

void loop() {
}
If the serial monitor displays 192.168.2.2, then that part works. If it displays any other value, like 0.0.0.0, then the SPI connection failed.
2818  Using Arduino / Installation & Troubleshooting / Re: OpenSuse 12.1: ALL compilations fail after system update - Repo broken on: December 23, 2012, 12:47:27 pm
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Like I said, you are either not reading what I write or you simply have no clue what you are talking about!
I am reading what you are writing and trying to help, but apparently I don't have a clue what I am talking about. Maybe someone else can help you.

2819  Using Arduino / Installation & Troubleshooting / Re: OpenSuse 12.1: ALL compilations fail after system update - Repo broken on: December 23, 2012, 12:12:20 pm
Quote
There is no avr-gcc in OpenSuse stock!
It's only in the Arduino repo.
... and included with the Arduino website version, whether or not you have avr-gcc or avr-libc installed from your repo.

edit: Even if you have those installed from your repo, the Arduino website version does not use them.
Quote
So excuse me, but from a multi-million-dollar-business, I expect that if the maintainer of the official software repositories makes a rookie mistake and puts incompatible packages to the repo
Arduino did not put that modified and broken package in the OpenSuse repo, OpenSuse did. Complain to them. The official software repository for Arduino is the Arduino website. All others are unofficial.

2820  Using Arduino / Installation & Troubleshooting / Re: OpenSuse 12.1: ALL compilations fail after system update - Repo broken on: December 23, 2012, 09:40:03 am
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Don't just say "not true" without knowing the repo in question! NONE of the libraries in that repo are available in OpenSuse stock! Especially not the avr-libc, which seems to be causing the trouble here after what I have found on Google.
OK. I have a bunch of alternatives to "not true", but most I wouldn't want to post here.

The avr-gcc and avr-libc are in the Arduino IDE release. It DOES NOT use the standard Linux libraries. It uses its own libraries. So you can update the avr-gcc and avr-libc in your Linux without affecting the avr-gcc and avr-libc included in the Arduino IDE.

How's that?
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