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106  Forum 2005-2010 (read only) / Development / Re: Help with Arduino Clock... on: July 02, 2010, 08:34:09 am
Do you guys think this will help?

http://www.sparkfun.com/commerce/product_info.php?products_id=99
107  Forum 2005-2010 (read only) / Development / Help with Arduino Clock... on: July 01, 2010, 10:20:47 pm
I wanted to know if you any of you guys knew how to tell time on an Arduino. I found a Time Library for Arduino but that syncs with your computer. Is there a way I can keep track of time including the date using Arduino without the use of a computer? If you have any code examples it will be much appreciated...  
108  Forum 2005-2010 (read only) / Development / Extra Supplies... on: July 02, 2010, 02:32:08 pm
If anyone has any extra supplies that they do not need anymore and have no current use for them it will be much appreciated!!!

I need an LCD Display, Real Time Module, and another Arduino.
109  Forum 2005-2010 (read only) / Interfacing / Re: USB and XBee Communication on: January 23, 2011, 11:34:29 am
Here is the project that I am doing:

I have a device that needs to connect to the Arduino via its USB Port to a computer. The computer sends a command via a terminal to the Arduino. Once the data has been received by the Arduino, the Arduino needs to be able to use the XBee's to send and receive commands only. It will not use USB again until it has been reset.

Currently, if I plug in the XBee to the Arduino's TX/RX pins, I cannot send any messages to the Arduino via HyperTerm or the Arduino IDE's Serial Monitor.

Should this library fix my problems? : http://arduiniana.org/libraries/newsoftserial/

Any ideas?
110  Forum 2005-2010 (read only) / Interfacing / Re: USB and XBee Communication on: January 22, 2011, 10:34:26 pm
But how do I write to the Arduino serially while the TX and RX Pins are connected to the XBee? There is only one serial port and if it is taken up by the XBee how can I send commands from the PC?
111  Forum 2005-2010 (read only) / Interfacing / Re: USB and XBee Communication on: January 22, 2011, 09:43:32 pm
No but the thing is I want the computer to send a command to the Arduino while the TX/RX pins are connected to XBee.

Is there a way I can know whether I am connected to USB or XBee?
112  Forum 2005-2010 (read only) / Interfacing / USB and XBee Communication on: January 22, 2011, 05:10:08 pm
Hey Guys,

Wanted to see if anyone knows anything about using USB and XBee simultaneously. I know that you cannot use them at the same time as there is only one Serial port, but i was wondering about using a transistor as a switch so that I can turn a digital pin HIGH which would connect the XBee and Recieve Pin, and turn the pin LOW which would disconnect the XBee from the Receiver pin allowing communication between the computer and Arduino.

Is this possible? Has anyone tried it? If this is not the best solution, what is?

Thanks!
113  Forum 2005-2010 (read only) / Interfacing / Re: Electret Microphone with Arduino on: January 11, 2011, 07:47:45 am
I put all of the extra components on the board, yet it make no difference. It still shows values from 400 - 600 continuously and when I clap, it makes no spike but when I hit the mic, it jumps to a really high number or goes down to 85 or 0.

I put the 1N4001 Diode, 2.2k Ohms Resistor, and 10 microFarat Electrolytic Capacitor. I connected the diode between the AUD Pin and Analog Pin 0 of the Arduino, the Resistor from the Analog Pin 0 to Ground, and the Capcitor from Analog Pin 0 to Ground.

It seems that it made no change? Any suggestions? Should I just build my own microphone circuit? I found people had a lot of success in doing so.

Thanks!
114  Forum 2005-2010 (read only) / Interfacing / Re: Electret Microphone with Arduino on: January 10, 2011, 07:47:05 pm
Oh okay... Thanks.

Also do I get the rectifier diode or the regular diode?
115  Forum 2005-2010 (read only) / Interfacing / Re: Electret Microphone with Arduino on: January 10, 2011, 07:29:29 pm
Wait where can I find the diode 1N1002? I tried to look in RadioShack but could not find it. Not even Sparkfun has it.
116  Forum 2005-2010 (read only) / Interfacing / Re: Electret Microphone with Arduino on: January 09, 2011, 11:21:50 pm
So just to  clarify things...

I connect the diode between the Sparkfun AUD pin to the Arduino Analog Pin.
Between the diode and the Arduino Analog Pin, I connect the resistor from the Arduino Analog Pin to ground and the capacitor from the Arduino Analog Pin to ground.

This is what I understood from the Wiring circuit...

Thanks for all your help so far! I need to go purchase the parts used in the circuit from RadioShack so I will give you a response back tomorrow on the progress.
117  Forum 2005-2010 (read only) / Interfacing / Re: Electret Microphone with Arduino on: January 09, 2011, 11:01:23 pm
Maybe I should specify next time for opinions that relate to my project...

Anyway, how exactly do I add these components? Do I put them between the AUD pin and analog Pin on the Arduino?
118  Forum 2005-2010 (read only) / Interfacing / Re: Electret Microphone with Arduino on: January 09, 2011, 09:40:08 pm
Sorry if you felt that way. I did not mean in any way to give that notion but it is just because I purchased 10 of these and wanted to make sure I get it right this time.

It is worth adding that capacitor/diode? Will it solve my problem? I was watching a couple of videos of people using a electret microphone and none of them had bought the Sparkfun board, rather they found success in building their own circuit. Should I do this?

I am up for all opinions whether I have to purchase something or not.
119  Forum 2005-2010 (read only) / Interfacing / Re: Electret Microphone with Arduino on: January 09, 2011, 05:56:59 pm
Do any of you guys think this circuit will work?

http://wiring.org.co/learning/basics/microphone.html
120  Forum 2005-2010 (read only) / Interfacing / Re: Electret Microphone with Arduino on: January 09, 2011, 12:16:52 pm
Yea but right now it is not recognizing any noise. It just stays at a range between 300 - 500 and moves whether there is noise or not. When I tap it, it jumps to 1023 or it goes all the way down to 0.

I even averaged it after 10 inputs. What should I do?
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