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1321  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: Op amp wiring what am i doing wrong? on: January 07, 2011, 09:10:29 am
Rule #1 on steppers... there are no standards.

Get out your Ohm Meter and see what's connected to what.  Make note of the values on the meter.  It will help you figure out what you have.

Methods similar to what are used below may help... but your motor type is still unknown to us.

http://www.bbastrodesigns.com/operate_stepper_windings.html
1322  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: Read usb mp3 on: December 14, 2010, 07:57:42 pm
Quote
Or is the usb on the Arduino nano going to be enough to use as an input?

No, it probably won't... The USB in the Arduino is a virtual RS232 port and not a USB HOST host controller nor is it  a USB HID interface. So really , the VDIP is the most logical/economical solution to adding a host controller to the Arduino... even if it's slow.

There is an FTDI product other than the VDIP1 that may be a way to get what you want.  I would recommend you look at the FTDI VDRIVE2 or start fresh and look at the FTDI VMUSIC 2 as a peripherals to add to the Arduino.  

VMUSIC2 obviously is an option only if you can use the PC to capture data to an MP3 file, then to a flash  using a PC.  

I would not expect the Arduino to be much help if what you want can't be done with a PC.

1323  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: arduino in italiano possibile per  programmazione on: January 07, 2011, 09:26:20 am
Tuo non Italiano.
1324  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: isolated usb device control on: January 07, 2011, 09:24:15 am
Yes.  It is well documented.

http://www.arduino.cc/playground/Main/PS2Keyboard
1325  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: Power problems on: January 07, 2011, 09:21:48 am
http://www.extremecircuits.net/2010/03/usb-power-injector-for-external-hard.html

I've made one... works nice.
1326  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: ANSI C IDE for Arduino projects. on: December 25, 2010, 10:58:58 pm
You sound like you want to use WINAVR  (AVR GCC)

http://winavr.sourceforge.net/

Smiley Micro's even shows you how to "ARDUINO-IZE" AVRGCC in a series of articles published in NUTS&VOLTS magazine.
1327  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: Transistors and PWM on: January 01, 2011, 08:55:02 pm
To be more accurate... the body is more like a capacitor... and not as much like a big resistor.
1328  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: Philosophy: How far back does on: December 28, 2010, 09:54:08 am
It is my opinion that "lawyers" are keen to remind us that if someone makes no attempt at protecting their intellectual property they have actually forfeited some rights to claim how it gets used.

So, if you share your code and want some control over it... add some form of license at the top of the code and to any related texts. I believe that the nature of the "requirement" about derived work is that you include "credit headings" from your reference.  If they claimed original work.. then that's all.  If the work you are deriving yours from is also derived from other sources... it would already be noted in the credits headings you are adding to your source.

If you "find" code with no license... you technically can do with it what you please.  Good behavior dictates that you at least say where "your" code is derived from lest we start to hear claims of "foul play"

The nature of the Arduino and its community lends itself to open source code and sharing of ideas. The CC license seems well suited to what we do as a whole.

Original work may be used in commercial solutions.  Seems fair.

If the Arduino community stopped acting like an open source/shared ideas community and instead started abusing each other and all around started behaving badly... well, I guess you can see my point about where that would lead.

"We" and the Arduino design are "successful" mainly because of the community it created.

Below is an example of some recent work I did.  Eventhough I scrapped a lot of the original work, I felt compelled to give proper credit as my work was derived from the original authors work


Code:
/* Filename: outgauge.h
   Compiler: wxDevCpp Version 7.3.1.3 (MINGW32)
   Project:  OutGauge Bus
   Original Author:   Vladimir Kadlec http://www.fi.muni.cz/~xkadlec
  
   Revision: Serial Interface and Packet Update revisions  - Pete Willard
   Version: LFS.Z28.01
 
   Serial Modification for microcontroller support:  Pete Willard
   Now sends commands out serial ports to an external Microcontroller
   serial bus.
  
   A lot of the original code was scrapped, Sorry Vladimir.
 I just didn't want to figure out WINSOCK UDP code by myself.  This is
  therefore, a very modified derivitive of the original GI.EXE
*/

 
/*

ORIGINAL: Gear Indicator is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.

Gear Indicator is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with Gear Indicator; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
*/

1329  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: programming-C or C++ on: December 24, 2010, 11:13:56 pm
Just focus on learning C.
1330  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: Earthshine Electronics on: December 22, 2010, 09:39:15 pm
I blame customs and slow boats across the Atlantic.   smiley-wink
1331  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: Tuning the PID Library on: July 27, 2010, 08:08:42 pm
Nice... Thanks.
1332  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: Usage of SMD elements on: December 12, 2010, 05:44:34 pm
I use a product by abacom for my PCB drawing.  Not free... but real easy to use and accurate.  Ideal for HOBBY use.  It's Sprint Layout.   I Do SMD stuff all the time.

http://www.abacom-online.de/uk/html/sprint-layout.html

I also use kg4wsv's method of fabrication with excellent results.  I use a thermal laminator to apply the toner.
1333  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: Why Do I Need A Resistor on: December 11, 2010, 08:40:16 pm
Don't forget it's not just about the Arduino pin.  The LED, without having a resistor to help provide a  controlled current  source, can draw a larger value of current  than it itself can tolerate... and then you get HEAT and ultimately release  MAGIC smoke out of your LED.

You can drive an led like your grandpa drives his Buick on sunday or you can drive it like James Dean drove his Porshe 550.

You pick... but one of those ways has your LED living fast and dying young.
1334  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: Ic's that are compatible with Arduino? on: December 11, 2010, 08:46:41 pm
Years and years and years worth of IC's have been developed to be compatible with "5 Volt TTL LOGIC".  That's the key to being compatible with Arduino.   7400 series, 4000(CMOS) series are the oldest and longest living logic families that you can select from.

Datasheets for these are everywhere online.
1335  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: Disabling USB Supplying for an Arduino UNO on: December 09, 2010, 12:41:18 pm
This might do what you want:

http://www.siliconchip.com.au/cms/gallery/article.html?slideshow=0&a=110648&i=5

It is a way to supply power from your external source... with extra current... and it will shut off when USB goes away.

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