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1  Using Arduino / General Electronics / Re: VS1053 board SD card problem on: July 28, 2014, 02:37:31 pm
http://www.martin-gardner.co.uk/how-to-connect-your-old-sd-card-to-an-arduino/

and what about this source ? does this really work for me ?.
and in addition, will current sufficient for it, since no additional parts are listed in the article, above.

Added later:

Ok, i've got one tutorial (also), which i think is the best one http://sriramiyer.net/blog/2013/09/28/arduino-making-a-microsd-shield/

I think this would solve my problem.

and i'm interested in can it cause any problem with VS1053 shield, since it will have separate SD card slot. i've been working on VC1053 and it had onboard SD card slot (had no problem using it), but i'm not sure if it work?

also do you have any library targeting this board (VS1053 ? )
2  Using Arduino / General Electronics / VS1053 board SD card problem on: July 28, 2014, 12:00:15 pm
Hello everybody

I've purchased board like this http://www.ebay.com/itm/310645105092?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649from ebay and as i found out later it has no SD card shield so i'm interested in if i can connect SD card directly to arduino because it is the best choice for me for this time, since i'm in a hurry and another purchase would waste my valueable time.

So please help me and give me some info how to connect SD and this board to arduino and make them work.

Thanks in advance!
3  Using Arduino / Programming Questions / Re: Music shield v2 on: May 24, 2014, 09:44:07 am
And if I choose another board is this possible?
4  Using Arduino / Programming Questions / Re: Music shield v2 on: May 24, 2014, 08:30:54 am
ok, situation is as follows.

i know that song X.mp3 should be started from 0:30sec, so i'd like to start playing music from 0.30sec, and not start from 0.00sec as default.

i think that i have badly written my problem description.
5  Using Arduino / Programming Questions / Music shield v2 on: May 24, 2014, 02:26:32 am
Hello
I'm interested in whether can I play music from a given time with music shield 2 and arduino. And if I can, how, just tell me function from the library which takes time argument to start playing from that time, or some other source to manage do like above.

this is shield
http://www.seeedstudio.com/depot/Music-Shield-V20-p-1372.html?cPath=38
6  Using Arduino / Audio / Re: audio shield plus motion sensor on: May 22, 2014, 05:09:39 am
Any ideas ?
I've been looking and saw VS1053 chip, bit I m not sure if it supports pause/resume feature and if it can play music from given time?
7  Using Arduino / Audio / audio shield plus motion sensor on: May 21, 2014, 02:36:34 pm
Hello everybody,

I've started a project which works depending on PIR sensor. When motion is detected arduino should play some pretty recorded was or mp3 file, located on SD card. I want shield which would be able to play some sound, pause it, meanwhile play another if necessary, and continue from the paused position. This actions are highly depended on PIR sensor.

I don't know exactly which sound shield would be capable of making such things.

Thank you in advance!
8  Using Arduino / Audio / Re: arduino FHT on: April 11, 2014, 12:47:42 am
Thanks, and I'm also interested when I read 3 ADC will it have influence on sampling rate , I.e. 9,5 / 3 or just 9,5?
9  Using Arduino / Audio / Re: arduino FHT on: April 10, 2014, 10:03:46 am
OK, thank you for your response.
I'm interested in how to minimize 20khz reading freq to 2 or 3, and sampling rate also. I think that when I put delays between reading values it will only cause value update rate and not freq, or sampling rate.
10  Using Arduino / Audio / Re: arduino FHT on: April 09, 2014, 02:29:48 am
all right here is my experimental setup, where i've 3 resistors - VCC----<R1>--*--<R2>--**--<R3>----GND
R1 = R2 = R3 = 100ohm
where
* = adc0
** = adc1

void setup()
{
  Serial.begin(115200);
  ADCSRA = 0xe5;
  ADMUX = 0x40; // use adc0 - sends 681
  //ADMUX = 0x41; //sends -11072
  DIDR0 = 0x01; // turn off the digital input for adc0
}

void loop()
{
  while(!(ADCSRA & 0x10)); // wait for adc to be ready
  ADCSRA = 0xf5; // restart adc
  byte m = ADCL; // fetch adc data
  byte j = ADCH;
  int k = (j << smiley-cool | m; // form into an int
 
  Serial.println(k);
  delay(100);
}

here is my code which works fine in new named sketch and in old sketch where i worked i copy pasted this code uploaded on uno, but values are same for adc0 and adc1. something mysterious happens.
11  Using Arduino / Audio / Re: arduino FHT on: April 08, 2014, 04:12:36 pm
OK now I access directly to variable k, and results are same. If you have answer why don't you just tell me ?
12  Using Arduino / General Electronics / Re: autooscilating oscillator on: April 08, 2014, 12:07:31 pm
thank you very much i've purchased AD9850 and i'll try it out.
13  Using Arduino / General Electronics / autooscilating oscillator on: April 08, 2014, 10:48:51 am
I'm not sure if name is right but I'll try to write main idea of the device I want to make.

In my lab I have signal generator, which has such function. For example I can vary oscillator frequency from 100 to 800 khz in 1ms. And it works great.

I would like to make such generator, which will operate like described. My main point is that this device has to be compact and if it would be microcontroller based, I think that's would be great. And I thing max frequency to be less than 1 mhz.

Have you any suggestions ? Thanks in advance.
14  Using Arduino / Audio / Re: arduino FHT on: April 08, 2014, 10:24:02 am
I think that it works for adc0 because I tested out voltage divider and it gave me true value.

Can you tell me why it doesn't work? I would be very thankful
15  Using Arduino / Audio / Re: arduino FHT on: April 08, 2014, 05:55:38 am
i think my mistake is that i didn't convert values Accordingly?

but if it works for adc0 why now for adc1 ?
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