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481  Forum 2005-2010 (read only) / Frequently-Asked Questions / Best Way to Save Power on: May 17, 2010, 08:56:31 am
Hi,
I've got a Duemilanove and a WiShield hooked up to a temp sensor and a photoresistor.  I want to put it outside on a 9v battery, but am afraid it will eat through the battery.   Realistically I only need new information every 10 minutes or so.  How can I get the Arduino to go into low power mode for 10 minutes, then wake up, get the sensor readings and then go back to sleep?

What is the best way to manage power so I don't burn through batteries.  Should I put it to sleep and use interrupts?

Thanks.
482  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: Button toggle on: May 18, 2010, 02:35:59 pm
Quote
but I can only get it to bang

What does this mean?
483  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: Use multiple shields? on: May 06, 2010, 12:54:26 pm
Some folks have gotten a 16 x2 LCD with a WiShield (WiFi) from Asynclabs working, but I am not one of them .  I believe I had a pin conflict issue.  a standard 16 x 2 doesn't use a shield, just a lot of pins.

http://asynclabs.com/
http://www.sparkfun.com/commerce/product_info.php?products_id=255
484  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: Arduino - Twitter connection question on: April 27, 2010, 05:29:53 pm
Also check out Asynclabs for some wireless options.
http://asynclabs.com
485  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: Circuit on: April 27, 2010, 12:48:29 pm
Is this a good ATiny to use for this project?
http://www.newark.com/atmel/attiny48-pu/8-bit-mcu-4k-fla-1-8-5-5v-pdip28/dp/03P2039

486  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: Circuit on: April 26, 2010, 07:06:52 pm
Thanks for the comments everyone.  I think I'll try ATiny and will definitely check out those Forest Mims books.  
Any advice on how to program an ATiny?
Can I just stick it on a breadboard?  
Do I need a special cable to program it?

Cheers.
487  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: Circuit on: April 26, 2010, 02:12:38 pm
The ATiny might work.  Never tried one before.  I might try that - Thanks.
488  Forum 2005-2010 (read only) / Frequently-Asked Questions / Circuit on: April 26, 2010, 01:01:33 pm
I currently have a curcuit with the following setup.
A motion sensor triggers a row of 5 leds to light up.  The light only comes on if it is dark enough thanks to a photo cell.  All of this is handled through software and the Arduino.

Not  knowing enough electronics juju to design my own circuit, is it possible to do soemthing similar without an Arduino?

Basically I want a small circuit that triggers a light to come on at night based on detecting motion.

Thanks.

489  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: ethernet shield on: April 20, 2010, 10:12:35 am
Also check out Asynclabs for some cool wireless options.

http://www.asynclabs.com/
490  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: Coffee Level Sensor on: April 07, 2010, 01:52:16 pm
I have used the TM36 temperature sensor from Adafruit. It has a range of -40 C to +150 C.
Very easy to implement.  
http://www.adafruit.com/index.php?main_page=product_info&cPath=35&products_id=165&zenid=82b4ec97b37cd1f05b9eb6fa1596ec8e
491  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: Have Goal; Need advice to create arduino sensor... on: March 31, 2010, 11:13:32 am
Sounds like an interesting project.  You might want to check out Xbee for the wireless.  There is a good review page on Ladyada.net of the different types.  http://www.ladyada.net/make/xbee/modules.html
492  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: Addding Library in 17 on: January 26, 2010, 11:41:13 am
I believe it is where you are putting the Libraries folder that is the problem.
I think it goes under user/documents/Arduino/, but I'm not on my MAC right now.
493  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: Addding Library in 17 on: August 15, 2009, 04:33:24 pm
Thanks - got it.
494  Forum 2005-2010 (read only) / Frequently-Asked Questions / Addding Library in 17 on: August 15, 2009, 04:16:52 pm
Hi,
Silly question,
but how do you add a library in version 17 as it is no longer a folder.
I want to add the WAV library for use with the  Adafruit Audio Shield.  Where do I put it?

Cheers.
495  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: Results displaying on LCD on: March 30, 2010, 02:34:43 pm
I would add the following:

lcd.print(elaspedTime);
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