Show Posts
Pages: 1 ... 15 16 [17] 18 19 ... 30
241  Using Arduino / Project Guidance / Re: Lights for drums - Beginner need some advice on: March 13, 2013, 04:30:03 pm
The question was not how to sense the beating on the drum nor how to trigger the light, it was which lights to use.
242  Using Arduino / General Electronics / Re: Amplifying PWM output on: March 13, 2013, 03:05:54 pm
MOSFET will do this without trouble.
243  Using Arduino / Project Guidance / Re: Lights for drums - Beginner need some advice on: March 13, 2013, 03:03:33 pm
A stroboscope would be cool. It is designed to produce bright flashes. If you want them in different colours, you can put some coloured gels for photography.
244  Using Arduino / Programming Questions / Re: Arduino DCC library with other libraries on: March 12, 2013, 01:08:41 pm
Since I'm also interested in this, is the version 4 of the library the new one with resolved issues?
245  Using Arduino / Programming Questions / Re: Code Blocks for Arduino on: March 12, 2013, 01:36:53 am
7Zip is one of the first thing I install after cleaning my HDD.
Not because I need the 7z file support, but because it works well for all other compressed file types. WinZip be gone!
246  Using Arduino / Project Guidance / Re: Nikon D40 timelapse photos - Guidance ! on: March 11, 2013, 02:29:35 pm
Did some googleing and, yep, apparently there is no cable release option for D40 :S
Guess IR is the only way to go. However, in my googleing I came across a post which says that you need to put the camera in the remote trigger mode and that that mode can last 5 to 15 minutes after which it exits that mode and is no longer sensitive to IR remote.
I don't have D40 (I have 40D) so I can't check that, but that would mean it is useless for timelapse.
247  Using Arduino / Project Guidance / Re: Nikon D40 timelapse photos - Guidance ! on: March 11, 2013, 03:16:31 am
Well, most modern cameras, including D40 have similar triggering mechanism, so don't limit your search to D40 exclusively. What works on a Canon DSLR will also work on a Nikon. The most significant difference I am aware of is the fact that on Canon you only need to close the trigger pin, while on Nikon you need to close both trigger and focus (talking about wire trigger release).
248  Using Arduino / General Electronics / Re: Do you have any tricks for identifying chips? on: March 11, 2013, 03:10:59 am
If you can't find exact datasheet, you still should check out the one you do find. Some datasheets cover multiple similar chips.
249  Using Arduino / Project Guidance / Re: Using Arduino + Sensor Camera to Detect Dents and Scratch on: March 11, 2013, 02:52:36 am
Arduino is not good at image processing. Take a look at Raspberry Pi.
250  Using Arduino / Project Guidance / Re: construction Laser level for digger on: March 11, 2013, 02:51:20 am
It appears to me that you are approaching this from wrong angle.
Instead of trying to dig out the precise trench, dig deeper and fill it up to suit your gradient. Use the above mentioned water level method (a transparent hose partially filled witht water). It will be significantly more accurate than trying to get milimeter accuracy with an excavator that tumbles around uneven surface.
251  Using Arduino / Programming Questions / Re: Multiple random LED's on: March 11, 2013, 01:59:39 am
@Shpaget use the code tags not the quote

OH!!
There was something bothering me about the way it looked, just couldn't put my finger on it. Thanks, fixed.
252  Using Arduino / Programming Questions / Re: Multiple random LED's on: March 11, 2013, 01:28:34 am
This is from the project I'm working on. It uses shift registers and shifter library. Basically everything is in arrays. The code is still very much in development so it could use a bit of cleaning up and optimization, but it works.

Code:
void neonFlicker(int firstPin, int lastPin) //  Receives first and last pin number for the block to be assigned neonFlicker effect
{
  for (int i = firstPin - 1; i <= lastPin -1 ; i++)       //  Iterates between the pins set in loop, sets addresses of pins to 1-8 per shift register, and not 0-7
  {
    currentMillis = millis ();                   //  Updates current time
    if (ledState [i] == 0 &&
      currentMillis - previousMillisArray [i] > neonFlickerArray [i] &&             //  Checks if it is time to flicker
      flickerDelay [i] <= currentMillis) //  Checks if it is time to turn on one of the outputs on the shift register.
    {
      shifter.setPin(i, HIGH);                                                             //  If it is time for the pin in question, it is turned on.
      previousMillisArray [i] = currentMillis;                                             //  Updates corresponding field in the time array.
      ledState [i] = 1;                                                                       //  Changes the state ledState
      neonFlickerArray [i] = (random (2, 200));                                        //  Sets new flickering delay (time the light is turned on)
    }
    if (ledState [i] == 1 && currentMillis - previousMillisArray [i] > neonFlickerArray [i])    //  Checks if it is time to turn off one of the outputs on the shift register.
    {
      shifter.setPin(i, LOW);                                                             //  If it is time for the pin in question, it is turned off.
      previousMillisArray [i] = currentMillis;                                               //  Updates corresponding field in the time array.
      ledState [i] = 0;                                                                           //  Changes the state ledState
      neonFlickerArray [i] = (random (2, 4000));                                       //  Sets new flickering delay (time the light is turned off)
    }
  }
  shifter.write();
}
253  Using Arduino / Project Guidance / Re: Nikon D40 timelapse photos - Guidance ! on: March 10, 2013, 11:56:05 am
The instructables project you linke is an infra red remote trigger. Do you want to go down that path or do you want a wired device?

If you want wired a small relay, a reed switch, a transistor or an optocoupler can do the trick.
254  Using Arduino / Project Guidance / Re: arduino with relay shields on: March 10, 2013, 08:30:18 am
Are you using Google translate to translate from German? If yes, then posting on German section might be a good idea.
http://arduino.cc/forum/index.php/board,31.0.html

As for your question, if I understood you correctly then yes, you can use Arduino to control multiple relays based on a preprogrammed program or based on real time decision making.
255  Using Arduino / Project Guidance / Re: Power Question on: March 10, 2013, 04:51:55 am
AC mains power is being split all over your house. No problem there.
Pages: 1 ... 15 16 [17] 18 19 ... 30