Show Posts
Pages: 1 ... 15 16 [17] 18 19 ... 21
241  Using Arduino / Installation & Troubleshooting / Re: Unable to Install Arduino Uno Acer Aspire One Windows 7 on: June 17, 2012, 01:09:27 am
It gives that message because it tried to load a driver and could not find one.  Follow those steps and your Uno will work.
242  Using Arduino / Installation & Troubleshooting / Re: Unable to Install Arduino Uno Acer Aspire One Windows 7 on: June 17, 2012, 12:53:28 am
Take a look at this http://arduino.cc/en/Guide/Windows#toc4
243  Using Arduino / Project Guidance / Re: Phidgets Temperature Sensor on: June 15, 2012, 07:23:42 pm
Take a look at this: http://www.adafruit.com/products/269

And this: http://www.ladyada.net/learn/sensors/thermocouple.html
244  Using Arduino / Programming Questions / Mega2560 settings for eXtreme Burner - SOLVED on: June 13, 2012, 03:26:28 pm
Hello,

I am trying to use eXtreme Burner as a GUI for avrdude.  I need to add the Mega2560 to the xml file of boards, and I am not sure of all the settings that I need.
As always, any help is greatly appreciated.

I found the correct settings:
      <NAME>ATmega2560</NAME>
      <FLASH>262144</FLASH>
      <EEPROM>4096</EEPROM>
      <SIG>0x0001981E</SIG>
      <PAGE>256</PAGE>
      <LFUSE layout="2">YES</LFUSE>
      <HFUSE layout="4">YES</HFUSE>
      <EFUSE layout="4">YES</EFUSE>
      <LOCK>YES</LOCK>
      <CALIB>YES</CALIB>
245  Using Arduino / General Electronics / Re: The inexpensiveness of foreign component dealers relative to US dealers. on: June 11, 2012, 12:11:54 pm
TI has always been very accommodating with my sample requests.  STM as well. In fact I just got an email that STM are sending me 4 ULN2803's that I requested yesterday.
246  Using Arduino / General Electronics / Re: The inexpensiveness of foreign component dealers relative to US dealers. on: June 11, 2012, 11:13:25 am
You have to remember tho, the cost of owning a wedsite is different than the cost of owning a store with utility bills, employees, taxes etc
probably some of that is just overhead, 2$ is ridiculous but then again its not like that many people buy that kinda stuff these days that they can lower there price and go for quantity sales

If your business model necessitates a 9900% markup then you have some serious problems.

If I can buy a part for $.02, then I KNOW that a business such as RS can buy them for even less in the quantities that they can purchase in.

There is no way to explain away the greed and essential usury.
247  Using Arduino / General Electronics / Re: The inexpensiveness of foreign component dealers relative to US dealers. on: June 11, 2012, 11:09:14 am
I think what helps a lot is that I have my own business domain, so my email is not a public email address.  In addition to that I give them detailed information on what I want to use the parts for.
248  Using Arduino / General Electronics / Re: The inexpensiveness of foreign component dealers relative to US dealers. on: June 11, 2012, 02:18:29 am
I buy virtually all my components from either eBay or Terry King's YourDuino.com.  I have only had one semi-bad experience, and that was an ENC28J60 that I ordered from a brand new seller on Ebay with zero feedback.  It never arrived.  The seller refunded my money right away, but I would have preferred the ENC28J60.

I get A LOT of my components as free samples from the manufacturers, including a couple MAX7219CNG+ that seemed to be the root of this topic.  Transistors, MOSFET's, TRIAC's, etc. all free for the asking.  Even got two of the brand new MAX44005 RGB Color, Temperature,and Infrared Proximity Sensors for free.

The best deal that I have found for general IC restocking is the IC Assortment V2 from YourDuino.com - 12 various IC's in quantities of 5 each, 10 NE555's, and 20 1N4148 diodes for $12.25.  Also got a great price on RGB LED's there.  I have mentioned this before, but the wiki that Terry provides is top-notch.

I would love to buy from a local supplier, but it's their own greed that drove me to look elsewhere.  I never begrudge someone trying to make an HONEST buck.  But trying to sell me a component that I know cost them $.20 for $2.00 is just plain robbery.
249  Using Arduino / Project Guidance / Re: Programming Colorduino with Mega2560 serial passthrough on: June 10, 2012, 02:41:44 am
Thank you clarifying that.  I edited the title of my post to reflect what I was actually doing.
250  Using Arduino / Project Guidance / Programming Colorduino with Mega2560 serial passthrough on: June 10, 2012, 01:56:09 am
I spent several days trying in vain to program my Colorduino using my Mega2560.
None of the tutorials that I found seemed to work for me.

This is what I came up with that worked right away:

Mega2560           Colorduino
-----------------------
RX0 (pin 0)  ->>  RXD
TX0 (pin 1)  ->>  TXD
RESET         ->>  DTR
5V              ->>  VDD
GND           ->>  GND

Mega2560
Reset -> 4.7uF capacitor -> 5V

When I uploaded the sketch, as soon as the size of the sketch appeared in the window, I held down the RESET switch on the Mega2560 until the upload completed.

I am now happily able to program my Colorduino using my Mega2560.
251  Using Arduino / General Electronics / Re: Is there any cheap component shop? on: June 09, 2012, 01:56:01 pm
I have made several purchases from Terry King's shop YourDuino.com.  Always great prices and fast shipping, but most importantly is the wonderful wiki that he has put together to support all of his products.  I recommend that you take a look around there.
252  Using Arduino / Project Guidance / Re: ArduĂ­no Mega + MRF24J40 on: June 06, 2012, 04:08:38 pm
802.15.4 specifies the physical layer and media access control for low-rate wireless personal area networks (LR-WPANs), such as ZigBee or MiWi, not standard ethernet.

I would recommend that you look for a ZigBee or MiWi shield.
253  Using Arduino / Installation & Troubleshooting / Re: IDE 1.0.1 Problems with Leonardo, Windows XP and Windows 7 Enterprise on: May 27, 2012, 05:04:17 pm
Have you read this page: http://arduino.cc/en/Guide/ArduinoLeonardo
254  Using Arduino / Installation & Troubleshooting / Re: Arduino cannot run because it could not create a folder to store your settings on: May 21, 2012, 12:09:45 pm
One of two things is likely happening - Either your students will need WRITE access to the USER_NAME\APPDATA\ROAMING folder to create the appdata\roaming\arduino\preferences.txt file or they need WRITE  access to wherever their USER PROFILE is being stored so that Arduino can write to the sketchbook location.

One possible workaround is to add the following line (without the quotes) to the preferences.txt file "settings.path=c:\Users\*User*\WHEREVER THE USER PROFILE IS LOCATED"
255  Using Arduino / Installation & Troubleshooting / Re: arduino mega 2560 will not upload from computer to board on: May 16, 2012, 03:11:52 pm
How about telling us the error messages that you are getting?  Show us the sketches that you are trying to load.
Pages: 1 ... 15 16 [17] 18 19 ... 21