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1  Using Arduino / Installation & Troubleshooting / Re: Problem with Arduino Nano - on: May 23, 2011, 09:22:36 am
Looks like USB cable is OK - using the same cable I can connect to SparkFun's USB XBee explorer. I get new USB serial port in system, so it looks like cable is working.

So maybe just few broken Nanos...
2  Using Arduino / Installation & Troubleshooting / Problem with Arduino Nano - on: May 23, 2011, 09:15:58 am
Hello,
I have few Arduino Nanos and all of them behave  following way:

- when powered they blink orange LED, but not with 1s interval - this is faster and somewhat irregular - You can see that on
- when I connected them to linux box I got following messages in dmesg:

[23887.144141] usb 6-1: new full speed USB device using uhci_hcd and address 2
[23887.264102] usb 6-1: device descriptor read/64, error -71
[23887.488206] usb 6-1: device descriptor read/64, error -71
[23887.704570] usb 6-1: new full speed USB device using uhci_hcd and address 3
[23887.825072] usb 6-1: device descriptor read/64, error -71
[23888.048099] usb 6-1: device descriptor read/64, error -71
[23888.264149] usb 6-1: new full speed USB device using uhci_hcd and address 4
[23888.680094] usb 6-1: device not accepting address 4, error -71
[23888.793058] usb 6-1: new full speed USB device using uhci_hcd and address 5
[23889.208087] usb 6-1: device not accepting address 5, error -71
[23889.208128] hub 6-0:1.0: unable to enumerate USB device on port 1

So this suggest problem with USB cable - but I have tried few different (however they are from one batch, so if all USB cables are bad smiley - I should get later today one different mini USB cable) or with drivers on Linux box. Drivers should be OK, since Arduino Duemilanove attached to this box works perfectly, and FTDI chip is the same on both boards AFAIK.

- customer of mine, who is using Windows XP  have similar problems - COM port does not show, despite drivers from FTDI are installed.

Any ideas what could be wrong?
3  Using Arduino / Networking, Protocols, and Devices / Arduino Ethernet Shield - PoE ready - what thats mean? on: March 11, 2011, 07:36:02 pm
Hi
Currently available 'official' Ethernet shields ( http://www.smartprj.com/catalog/index.php?main_page=product_info&cPath=1&products_id=58)  are described as 'PoE ready'. I know what PoE stands for smiley but what that means for Arduino w/ shield? I don't have any PoE power injector nor PoE enabled switch so can not test these new shields.

Shield description seems to be not updated on wiki yet (http://arduino.cc/en/Main/ArduinoEthernetShield), so I'm just curious what that 'ready' means? Arduino board need some change to be powered via PoE? Or ?
4  Using Arduino / Installation & Troubleshooting / Re: Uploading to UNO on Linux - Resolved on: March 11, 2011, 07:17:34 pm
board.  The change was apparently useful in meeting FCC / CE guidelines. 

Hello,
Can anybody say if Arduino UNO has CE mark?
5  Forum 2005-2010 (read only) / Interfacing / Re: Reading/updating I2C BMP085 without delay() on: November 22, 2010, 11:29:35 am
Just one thought - BMP085 has EOC signal (it is brought out on SparkFun's breakout board). EOC is End Of Conversion - when low (0) conversion is in progress, when high (1) it is done.

So instead waiting You can attach EOC to interrupt and set it to fire on rising edge - I think it should work.
6  Forum 2005-2010 (read only) / Uno Punto Zero / Re: 3.3 DC current for Uno and Mega 2560 on: November 17, 2010, 03:00:52 am
Thank You for a clarification. That makes sense.
7  Forum 2005-2010 (read only) / Uno Punto Zero / 3.3 DC current for Uno and Mega 2560 on: November 16, 2010, 02:56:07 pm
Hi!
Is there a reason that specs on Hardware page say that maximum current for 3.3 DC pin on Uno and Mega 2560 is 50 mA not 150 mA? Using LP2985 as 3.3V regulator should provide 150 mA...

Since this is my first post smiley-wink I can not add links to hardware pages smiley but on both is:
DC Current for 3.3V Pin      50 mA

arduino.cc/en/Main/ArduinoBoardMega2560
arduino.cc/en/Main/ArduinoBoardUno
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