martes, 25 de diciembre de 2012

Arduino by Davis: “Re: DS3232 + PLL for a more accurate clock?” plus 19 more

Arduino by Davis: “Re: DS3232 + PLL for a more accurate clock?” plus 19 more

Link to Arduino by Davis

Re: DS3232 + PLL for a more accurate clock?

Posted: 25 Dec 2012 01:52 AM PST

A TCXO ought to be good enough. (Temperature-compensated crystal oscillator)

For instance here's one that's +/- 2.5ppm (but 3.3V and surface-mount):
http://uk.f...

Re: Ecran LCD Sainsmart cassé?

Posted: 25 Dec 2012 01:50 AM PST

Finalement le problème s'est résolu tout seul  smiley-kiss
suite à ce programme:
Code:
#include <LiquidCrystal.h>

LiquidCrystal lcd(8,9,4,5,6,7);

void setup()
{
  lcd.print("hello, world!");
}

void loop() {}

Mais je cherche encore mon erreur sur l'autre ...

Re: Need delay() in interrupt function. How?

Posted: 25 Dec 2012 01:49 AM PST

You're better off explaining why you think you need a delay in an interrupt including providing any code that you have currently.

I'm trying to do a Active Traffic Li...

Re: Trying to display the time with an arduino

Posted: 25 Dec 2012 01:48 AM PST

Re: Blown Caps in 0-30v 0-10a bench supply repair

Posted: 25 Dec 2012 01:48 AM PST

You connected the battery backwards perhaps?  The output cap won't have seen 50V, so driving it backwards is the only likely way to
vaporize its innards quickly.  Might be other damage too if that's the case.

Or some other component failed upstream?  ...

Arduibo Mega 2560 with RN-41-SM Bluetooth

Posted: 25 Dec 2012 12:53 AM PST

Hi all,

I am new to the Arduino world...
Recently, I got the mega 2560 and I am working on it for my graduation project.

Currently I am trying to interface the RN-41-SM bluetooth module with it. I am connecting it to TX1/RX1, 3.3 VCC and ground.
I a...

Re: Enviar e-mails desde Arduino?

Posted: 25 Dec 2012 12:52 AM PST

Yo envie email haciendolo por PHP, puedes verlo aqui

http://arduino.cc/forum/index.php?PHPSESSID=3854a1466bbb60bc3c090daea0dc436d&topic=120735.0

Me ayudaron muchisimo en el foro. Eso si, has de leer mucho, mucho....

Re: Problem with reading sensor

Posted: 25 Dec 2012 12:47 AM PST

Hi,
I think I found root of this problem. OBD2 library which I use somehow doesn't allow me to read more than one PID. When I want to read two or more it reads only the first one. Now the tricky part. Does anyone of you have any idea how to solve this ...

Re: Blink Without Delay Help

Posted: 25 Dec 2012 12:47 AM PST

i thought for loop is use for counting. am i wrong to assume this?

Arduino Programming using Legacy Code and Arduino Target

Posted: 25 Dec 2012 12:43 AM PST

Hi,

I am trying to program Arduino UNO through the new MATLAB feature called Arduino Target. However Interrupt functions or I2C communication is not available on Arduino Target. Therefore I wanted to use Legacy Code Tool to create my own Simulink Block...

WhiteSpace TweetTrain

Posted: 24 Dec 2012 09:21 AM PST

Somebody knows how to have fun in the office and with Arduino. Have a look at this project by [whitespacers] powered with our boards

Christmas is a time of gathering the family around and enjoying the simple things in life. And what could be simpler than a good old fashioned train set… powered by tweets?

Tweeters can simply send a message to #tweettrain then enjoy the ride via the onboard camera streaming to whitespacers.com/tweettrain as they puff their way round the Whitespace HQ Winter Wonderland.

The magic also lets tweeters control the Tweet Train's direction and speed by telling it to go in 'reverse' or 'fast'.

Iain Valentine, creative director and Whitespace Santa said: "When visual, digital and experiential marketing are linked effectively, it can seem like magic. We wanted to bring our clients something special for the festive season and so our elves were kept busy bringing the late 19th century Christmas gift of choice into the digital age. Deep down, everyone wants a toy train set for Christmas!"

If you're wondering which particular type of Christmas magic we used; it's the extra special Arduino-micro-controller coupled with a wifi receiver type.

You see Santa's elves replaced the Tweet Train's manual train controller with a wifi receiver so the train can be controlled by digital commands. Tweets containing the hashtag #tweettrain are searched for, simplified, and sent to a new URL that the arduino checks for new tweets. Each time it spots one, it powers the train motors. Magic basically.

We reckon it gives the Hogwarts Express a run for its chocolate money, but why not try it for yourself? Visit. Tweet. Drive the train. The station is in live cam on the [website]

Re: correct way to get firmata running?

Posted: 25 Dec 2012 12:28 AM PST

Quote
they gloss over it with little clear info .
They're not the only ones.

Re: LCD

Posted: 25 Dec 2012 12:26 AM PST

Just print two spaces after the number if you don't mind it being left-justified. That will clear any left-over from a previous, larger, number.

Re: Blink Without Delay Help

Posted: 25 Dec 2012 12:24 AM PST

There are a few problems here.

Code:
  for (int i = 0; i<50;i++)
  {

The variable "i" is going to rapidly go from 0 to 49, probably before any of your times elapse.


[code]
    switch (state){
    case 1:
      digitalWrite(Led,HIGH);
    ...

Re: Ethernet lesen mit mehr Geschwindigkeit....

Posted: 25 Dec 2012 12:17 AM PST

ok, hat sich erledigt smiley-grin

Habs auf ca. 7kb/s geschafft. Ich denke das ich das noch etwas optimieren kann. Aber ich muss mal sehen wie
ich den Buffer vom Ethernetshild voll ausreizen kann.

uint8_t buff[1536];
            if (client.available() > 1536){
 ...

Ethernet shield question about Ethernet.maintain() function

Posted: 25 Dec 2012 12:15 AM PST

Hello Dude,
         I have some problem with programming for Ethernet shield and new to Ethernet library. I have an arduino official shield. I tried the example and got it work until come to Ethernet.maintain() function. IDE is v1.0.3. I want to check...

Arduino and 24V => TPS54286????

Posted: 24 Dec 2012 11:53 PM PST

I was wondering if it would be possible to use a TPS54286 from TI to power either an Arduino micro or mini using an input, into the TPS54286 obviously, of 24v.
If I understood the datasheet correctly it creates a PWM signal , thus powering an Arduino u...

Re: MENWIZ: yet another character lcd menu wizard library

Posted: 24 Dec 2012 11:31 PM PST

I disabled the Serial function in USER DISPLAY SCREEN and all things are working fine to me. Have few questions:
1- How can i display the following two cutom characters on my USER DISPLAY SCREEN:
[code]//MOON
byte  Moon[8] = {
   B00100,
   B01000,
   B11000...

Re: PLC C programming

Posted: 24 Dec 2012 11:18 PM PST

i had once ask this question on the forum. but really after a while i learn that it is quite easy to make the transition. tell me how your program work and i will try to help you

Re: ywRobot I2C LCD problem / solution

Posted: 24 Dec 2012 11:17 PM PST

All these boards do work. It isn't really a hardware problem.
(well some do have issues with their backlight control circuitry)
The problem is software and the most common issue is the libraries and the fact that not all the boards are wired up
to the...
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