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1  Using Arduino / Programming Questions / Re: Set time with one button on DS1307 on: July 15, 2014, 08:43:37 am
To see if it is your module or if it is your code you can try this sketch,  set the time through serial monitor as directions state, then send the command Q2 it will dump the DS1307 memory in the monitor.
2  Using Arduino / Audio / Re: Need help determining which speaker is louder on: July 13, 2014, 07:16:55 am
I have used those micro round speakers in your first link, they are not well suited for music they have a "tinny" sound.
Much better in a situation for sound effects, like in a toy.
3  Using Arduino / Programming Questions / Re: Set time with one button on DS1307 on: July 11, 2014, 06:14:23 am
Could you please post your full sketch.
Code:
Wire.write(zero);
zero is?

Code:
Wire.beginTransmission(clockAddress);
Wire.write(byte(0x00));
Wire.write(decToBcd(minute));
Wire.endTransmission();


4  Using Arduino / Programming Questions / Re: Set time with one button on DS1307 on: July 10, 2014, 06:17:50 am
For doing an action depending on the duration of a button press Nick Gammons SwitchManager library works well. It is the last article on that page.
5  Using Arduino / Programming Questions / Re: Voltage measurement on: July 08, 2014, 10:31:31 am
Quote
how do you change a sketch's name ?
Easy way is while having your sketch open use the "Save as" function of the Arduino IDE, Ctrl + Shift + S.
6  Using Arduino / Project Guidance / Re: charging using a home made generator on: July 02, 2014, 01:07:02 pm
You need an efficient boost/buck converter with a low quiescent current.
A cheap one from e-bay this one is about 18mA which is a good percentage of what you'll be generating.
I made a turbine using 4 x PC fans, in a decent wind it would generate enough power to run 1 x PC fan at a little more than half speed. Not very efficient but it worked. Much better at charging 2 x AA batteries, then using a joule thief to power a 1W LED.
Used a 5 gallon bucket for the head, rope tied to top hole and a tree branch, another rope tied to bottom hole and a concrete block on the ground.
7  Using Arduino / Project Guidance / Re: Reducing DC voltage for a project on: July 02, 2014, 06:34:18 am
This high power Buck Converter works well for powering 19V laptops from 24V supply.
Not to expensive at $7.99 w/free shipping.
8  Using Arduino / General Electronics / Re: Programming Pro Mini using CP2102 module on: June 27, 2014, 06:11:15 am
Wimpy way?
So what would you deem the manly way of doing this? Smacking the rest with a hammer?  smiley-lol
9  Using Arduino / Microcontrollers / Re: Is this "too good to be true"? on: June 27, 2014, 05:53:32 am
Here's where I get my clone Nanos $5.85 w/shipping  and Pro Minis $2.59 w/shipping
Never have had a problem with any ordered from that seller.
10  Using Arduino / General Electronics / Re: Programming Pro Mini using CP2102 module on: June 27, 2014, 05:42:00 am
Along with doing what Paul__B stated.
When uploading the sketch try holding the reset on the pro mini , after your sketch has compiled and as soon as the IDE says uploading releasing the pro mini reset button.
11  Using Arduino / Audio / Re: Can anyone recommend a voice recognition module? on: June 19, 2014, 06:01:32 am
I have both the EasyVR 2.0 and Voice Recognition Module Rev2 modules.
I can say that the EasyVR 2.0 is much better than the Voice Recognition Module Rev2.
It has greater accuracy of recognition, a 3ft+ range with included mic and more options, worth the extra $$ to me. I use one in an Arduino A.I. project.
I bought my EasyVR 2.0 from Sparkfun , they sell the module on a shield.
12  Using Arduino / General Electronics / Re: making a potentiometer that has a low range of resistance?i on: June 16, 2014, 07:10:36 am
How about a max of 22 ohm? or 12 ohm?
Use a 2 ohm resistor in series with a 20 ohm  potentiometer.
2 ohm min, 22 ohm max
Or 2 ohm resistor in series with a  10 ohm potentiometer.
2 ohm min, 12 ohm max
13  Using Arduino / Project Guidance / Re: Sound recognition on: June 08, 2014, 06:23:55 am
Out of the box the EasyVR 2.0 shield does not work well with moderate background noises present, as any noise loud enough will trigger the shield.  Once triggered it takes several seconds to pickup/compare/respond and go back into listening mode. With enough background noise this just becomes an infinite loop.
Definitively would need a pro quality mic to isolate the area your monitoring.
With that said it can be used to respond to different types of whistles.
Of course the biggest challenge is having the bird patiently sit and sing to the shield while you program it to recognize that birds song.
It would most likely work best if it was indoors like for a parakeet/parrot. As it's the same bird always singing the pitch won't vary as much as it would of different birds of the same species in the wild.
14  Using Arduino / Project Guidance / Re: how to listen online radio using arduino on: May 17, 2014, 05:39:15 am
Maybe Maniacbug's project is of interest to you: Arduino on Ice: Internet Radio via Shoutcast
15  Using Arduino / General Electronics / Re: how many minutes or seconds does a RTC 1307 missing each month. on: May 14, 2014, 04:57:37 am
I bought a DS1307 module off an ebay auction for $0.99 been running since 6/13 in a talking clock/thermometer project hasn't lost a full minute yet.  Must be lucky.
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