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871  Community / Bar Sport / Re: So why are there no good electronics shops? on: September 10, 2012, 03:36:36 pm
Yes,  Mythbusters,   what a hard job those guys have eh?    I bet they dont even take annual leave, or have time off sick !
872  Using Arduino / Storage / Re: sending csv to serial port on: September 10, 2012, 05:02:10 am
OK great, it makes more sense , thanks -    I love learning, just wish I had more time !

I love deadlines, that whooshing sound they make as they fly by !
873  Using Arduino / Storage / Re: sending csv to serial port on: September 10, 2012, 04:54:01 am
I have just seen the similar thread about strings and sd cards,  I will have a go at sending each data and a comma, if I can

Can I use  (  for some of the column titles to start with )  :-

hardwired.print("   day  ,");
hardwired.print("   month  ,");
hardwired.println("   year  ,");

with the comma in the text, and a ln on the last print ?

or must I send each comma seperately ?
874  Using Arduino / Storage / Re: sending csv to serial port on: September 10, 2012, 04:50:00 am
Whats the alternative Paul  ?  , this is all new ground for me..
875  Using Arduino / Storage / Re: sending csv to serial port on: September 09, 2012, 10:13:40 pm
Thanks John

I suppose the Terminal program I tried needs setting up for that..

I will let the users IT guys work it out then,  thats what they are there for :-)

876  Using Arduino / Storage / sending csv to serial port on: September 09, 2012, 04:14:50 pm
I have a project that sends csv values from the Arduino chip, to a serial port, for the user to use the data any way they wish.

For my prototype, I send the various header titles, ( seperated by commas ) 

I hadnt thought about it, but I didnt include a CR LF to start each new line of values.

  I am using  Megunolink to monitor the data.

It displays the data perfectly, I suppose it matches the number of values to the number of column titles ?

I want to generate a csv output that any application can use, I have no idea what OS the user has.

I had a look at my prototypes output using a general Term program, the data is there but jumbled , it obviously needs a CR/LF to separate the lines of values.

What should I put at the end of each line that any spreadsheet type application will recognise in a CSV file ?

There are a few options when I have searched.

heres a snippet of the code I am sending :-

 
Code:
     {dataString += "normal" ;dataString += ","; }                                 
           dataString += String (buttonnumber) ;                 
                   dataString += ",";dataString += ",";
                   dataString += String (counter) ;dataString += ",";
                    dataString += String (clockhours );dataString += ",";
                    dataString += String (clockmins );dataString += ",";
                                  hardwired.println(dataString);
                           
                           
877  Using Arduino / Project Guidance / Re: 4 Digit Seven Segment Display Countdown Timer - Minutes to on: September 09, 2012, 12:23:32 am
Heres a v22 sketch for the " Bollywood Bomb " that I have scratched up from another project of mine.  I havn't tested this version, I dont have time to connect up the switches and display at the moment, but it should basically work, but if you try it we can debug any problems.

You could swap the pin numbers to work on Crossroads allsinging serial board.

For some reason it won't compile without the VirtualWire library , so I left it in.

Connect four pushbuttons to negative for the run pause plus and minus setting buttons.

It drives 4   x  TPIC6B595 serial register/drivers using shiftout,  I have made comments about which pins go to which LED segments.
the " spare" output of the TPIC for minutes units connects to the two dots between the mins and secs, which stays on while counting down, and flashes when paused ( you could swap it round if you ant the opposite effect.)
I have put in a " bombPin " output that you could drive an LED to light for 2 seconds ( or a sounderwhatever ) when countdown reaches zero.

Code:


// Boffin1's  countdown " bomb " timer with preset up down run and pause
//   connect dots  to spare TPIC output on minute units chip, on when counting down, flash when paused
#include <VirtualWire.h>
#define latchPin 19  // rck
#define clockPin 18  // sck
#define dataPin 16   // ser in

int tile [4];
//  bitmap for which leds segements ( TPIC pins ) are lit for numbers 0 - 9, first bit for dots
// this pattern will depend on how the segments are wired up
//       this pattern is for  sequence   =   dots,  e,  d,  c,  g,  b,  f,  a
const byte digitTable [10] = {
  B01110111, B00010100, B01101101, B00111101, B00011110, B00111011, B01111011, B00010101, B01111111,B00111111 }
;  

const byte blanked = B00000000;
int dotState;
int pause = HIGH;
int blank = HIGH;
int mintens = 0;
int minunits = 0;
int sectens = 0;
int secunits = 0;
int timeleft = 0;              
unsigned long previousdotMillis = 0;  
unsigned long previousMillis = 0;    
int mintendisp;
int minunitsdisp;
int sectensdisp;
int secunitsdisp;  
int plusPin = 4;
int minusPin = 5;
int runPin = 6;
int pausePin = 7;
int running;
int bombPin = 8;

//******************************************************        
void setup()
{
  Serial.begin(9600);
  blank == HIGH;
  Serial.println("setup");
  pinMode ( latchPin, OUTPUT);
  pinMode ( clockPin, OUTPUT);
  pinMode ( dataPin, OUTPUT);
  pinMode ( plusPin, INPUT);
  digitalWrite(plusPin, HIGH); // set pullups
  pinMode ( minusPin, INPUT);
  digitalWrite(minusPin, HIGH);
  pinMode ( runPin, INPUT);
  digitalWrite (runPin, HIGH);
  pinMode ( pausePin, INPUT);
  digitalWrite(pausePin, HIGH);

  digitalWrite(latchPin, LOW);      // blanking all displays
  for ( int k=0; k<=3; k++ ){
    shiftOut(dataPin, clockPin, LSBFIRST, blank);
    delay (5);
  }
  digitalWrite(latchPin, HIGH);  
  pinMode ( bombPin, INPUT);
  digitalWrite(bombPin, LOW);
}
//********************************************************************
void loop ()
{  

  checktime();

  if ( mintens + minunits + sectens + secunits  >= 1 ){
    timeleft = HIGH;
  }    // check again after countdown
  else
  {
    timeleft = LOW ;
    pause = HIGH;  
  }     //  flashing dots
  unsigned long currentdotMillis = millis();
  if(currentdotMillis - previousdotMillis > 500) {
    previousdotMillis = currentdotMillis;    
    if (dotState == LOW)
    {
      dotState = HIGH;
    }    
    else     {
      dotState = LOW;
    }  
    showtime ();
  }
  if ( pause == LOW ) {
    dotState = HIGH ;
  }

  

  checkbutton ();    


}//  end of loop


void checktime () {
  if ( mintens + minunits + sectens + secunits  >= 1 )  //  if time still left on countdown
  {
    timeleft = HIGH;
  }
  else {
    timeleft = LOW ;
    pause = HIGH;
  }

  if (timeleft == HIGH ) {
    if ( pause == LOW ) {  //  which means its counting down   i.e. not paused in countdown          
      static unsigned long previousMillis;
      if(millis() > previousMillis)
      {
        previousMillis = millis() + 1000;
        secunits -- ;             // countdown 1 sec
        if ( secunits  < 0 ){
          secunits = 9;  
          sectens -- ;
        }
        if ( sectens   < 0 ){
          sectens = 5;  
          minunits -- ;
        }
        if ( minunits  < 0 ){
          minunits = 9;  
          mintens -- ;
        }
        // mintens cant get to -1 or it would have to have been 0000 and paused
        Serial.print(mintens);  
        Serial.print(minunits);  
        Serial.print(" : ");
        Serial.print(sectens);  
        Serial.println(secunits);
        showtime ();

        if ( mintens + minunits + sectens + secunits  >= 1 ){
          timeleft = HIGH;
        }
        else {
          digitalWrite( bombPin, HIGH ) ;
          timeleft = LOW ;
          pause = HIGH ;
                // milliseconds bombPin goes high
          delay ( 2000 );
        }
        digitalWrite( bombPin, LOW );

      }
      dotState = HIGH;
    } // keeps dots on while countdown
    else
      if ( blank == LOW ) {
      flashdots ();
    }

  }
} // END OF CHECKTIME

void checkbutton ()
{  
  int plus = digitalRead( plusPin );
  if ( plus == LOW ) {    
    secunits ++;  
  }  

  if ( secunits > 9 ){      
    secunits = 0 ;      
    sectens ++;    
  }
  if ( sectens >5 ) {      
    sectens = 0;      
    minunits ++;    
  }
  if ( minunits > 9 ){      
    minunits=0;      
    mintens ++;    
  }
  if ( mintens >5 ){      
    mintens = 0 ;    
  }  

  int minus = digitalRead( minusPin );
  if ( minus == LOW ) {  
    secunits --;
  }

  if ( secunits  < 0 ){      
    secunits = 9;        
    sectens -- ;    
  }
  if ( sectens   < 0 ){      
    sectens = 5;      
    minunits -- ;    
  }
  if ( minunits  < 0 ){      
    minunits = 9;        
    mintens -- ;    
  }  
  if ( mintens < 0 ){        
    mintens =5 ;    
  }

  //  CHANGE THIS DELAY TO SET COUNTSPEED WHEN + or - BUTTON HELD IN
  if ( plus || minus == LOW ){  
    delay ( 100 ) ;    
    showtime ();      
  }  


  // when run button pressed release pause
  int runbutton = digitalRead( runPin );
  if ( runbutton == LOW ) {
    pause = LOW ;
  }


  // when pause button pressed  set pause
  int pausebutton  = digitalRead( pausePin );  
  if ( pausebutton == LOW ) {
    pause = HIGH ;
  }



}  // end of checkbutton function

void flashdots () {
  unsigned long currentdotMillis = millis();
  if(currentdotMillis - previousdotMillis > 500) {
    previousdotMillis = currentdotMillis;    
    if (dotState == LOW)
    {
      dotState = HIGH;
    }
    else  {
      dotState = LOW;
    }    
    showtime ();  
  }
  if ( pause == LOW ) {
    dotState = HIGH ;
  }  
} //  end of flashdots routins

void showtime ()   //  DISPLAY ROUTINE
{  
  int mintendisp = (mintens) ? digitTable [ mintens ] : 0;  //  zero blanking tens minutes
  int minunitsdisp = digitTable [ minunits ];
  int sectensdisp = digitTable [ sectens ];
  int secunitsdisp = digitTable [ secunits ];
  if ( dotState == HIGH ){

    minunitsdisp = minunitsdisp|10000000 ;
  }      //   adds msb to minunit to light dots when dotState high

  digitalWrite(latchPin, LOW);

  shiftOut(dataPin, clockPin, LSBFIRST, mintendisp);
  shiftOut(dataPin, clockPin, LSBFIRST, minunitsdisp);
  shiftOut(dataPin, clockPin, LSBFIRST, sectensdisp);
  shiftOut(dataPin, clockPin, LSBFIRST, secunitsdisp);

  digitalWrite(latchPin, HIGH);
}


878  Using Arduino / Project Guidance / Re: 4 Digit Seven Segment Display Countdown Timer - Minutes to on: September 08, 2012, 05:23:28 am
Sorry Crossroads,

I didnt see the pic of your one, its a lot more versatile than my simple one !    I will probably buy some boards from you next time ( I have just ordered another load of mine )

879  Using Arduino / Project Guidance / Re: 4 Digit Seven Segment Display Countdown Timer - Minutes to on: September 08, 2012, 01:03:16 am
I made up a little pcb  that I use for 7 seg displays, it is stand alone ( program the 328 on your arduino, then plug it in the board)
I have put some 10 pin idc headers on it, 4 for the first 4 digits ( as in a clock ), and one on the right of the board to carry on to more numbers if needed ( each digit has a TPIC6B595  high power latch driver that can drive massive digits )
The headers have 7 pins for segments a-g, and 3 pins for the LED supply.

There is another header on the left for gen purpose I/O to some of the pins of the micro. I use these for connecting to wireless / push buttons/ GPS / whatever.

There is also provision for a couple of power fets for switching other LEDs, horn , motor etc.

The board has its own 5v regulator, I generally supply 12v ( depending on the number of LEDs in series for each segment )



I can post the gerber files if anyone wants to make these, or I could perhaps supply the boards if anyone is interested.

I have a  a simple sketch for the countdown bomb, with a couple of push buttons to preset the start time, and a run/pause button.

880  Using Arduino / Storage / Re: power down data saving on: September 07, 2012, 06:25:45 pm
While the power is coming in to the regulator, the zener feeds a voltage to the base of the transistor, which switches on, keeping the DCgone pin low.

The normal loop keeps running while the DCgone pin is low, but when the incoming voltage drops below about 8 volts, the transistor switches off, but the 470mF capacitor is still charged ( the diode stops the power supply discharging the  470mF cap )and supplies 5 volts to the chip for about half a second.

On the next loop, the DCgone pin is high, and the variables are saved to the eeprom in the chip.

The unsaved flag only allows it to save the data once, as you dont want it to keep saving every loop as the 5 volt fades away.

When the power comes on again, the saved variables are read from the eeprom during setup.
881  Community / Bar Sport / Re: As people seem to occasionally mention things like this.. on: September 07, 2012, 02:26:42 am
Congratulations  - 
882  Development / Suggestions for the Arduino Project / Re: Interest in overhauling the IDE user interface? on: September 06, 2012, 03:36:11 pm
Thats a relief that it wasnt just me imagining the custard screen :-)
883  Development / Suggestions for the Arduino Project / Re: Interest in overhauling the IDE user interface? on: September 06, 2012, 12:27:43 pm
Yes, it my be my slow reactons, but ofen I end up with a whole yellow page...
884  Development / Suggestions for the Arduino Project / Re: Interest in overhauling the IDE user interface? on: September 06, 2012, 11:24:12 am
when you try and select just a line or two of text, and suddenly you get a load of yellow lines selected -  perhaps its one of my settings ?
885  Community / Bar Sport / Re: So why are there no good electronics shops? on: September 06, 2012, 10:44:21 am
Quote
it was moved out to a more major road because it's original location was too far off the tourist track.

That takes away a bit of authenticity perhaps ( for those who dont recognise Walkabout Creek and its pub - it was in the movie Crocodile Dundee )

So the massive road train trucks going by was a bit far fetched then :-)

Glad you didnt have the recession, or perhaps your life style made you miss it !
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