پروژه های آردوینو، اجرای کرونومتر در آردوینو.
پروژه های آردوینو، اجرای کرونومتر در آردوینو.
فهرست قطعات؛
1) صفحه نمایش LCD موازی 1×16×2 (سازگار با درایور هیتاچی HD44780)
2) 1x آردوینو
3) 1×10kΩ پتانسیومتر
4) 1x10kΩ مقاومت
5) سوئیچ 1x
6) سیم جامپر
دستورالعمل؛
1) تمام سیم جامپر را همانطور که در نمودار نشان داده شده است وصل کنید.
2) ورودی دیجیتال را از سوئیچ به پین دیجیتال 2 وصل کنید.
این کد را در آردوینو خود آپلود کنید
/* Stopwatch Run stopwatch with arduino. Code based on: http://danthompsonsblog.blogspot.com/2008/11/timecode-based-stopwatch.html Coded by: arduinoprojects101.com */ // include the library code: #include <LiquidCrystal.h> // initialize the library with the numbers of the interface pins LiquidCrystal lcd(7, 8, 9, 10, 11, 12); int ledPin = 13; // LED connected to digital pin 13 int buttonPin = 2; // button on pin 2 int value = LOW; // previous value of the LED int buttonState; // variable to store button state int lastButtonState; // variable to store last button state int blinking; // condition for blinking - timer is timing int frameRate = 100; // the frame rate (frames per second) at which the stopwatch runs - Change to suit long interval = (1000/frameRate); // blink interval long previousMillis = 0; // variable to store last time LED was updated long startTime ; // start time for stop watch long elapsedTime ; // elapsed time for stop watch int fractional; // variable used to store fractional part of Frames int fractionalSecs; // variable used to store fractional part of Seconds int fractionalMins; // variable used to store fractional part of Minutes int elapsedFrames; // elapsed frames for stop watch int elapsedSeconds; // elapsed seconds for stop watch int elapsedMinutes; // elapsed Minutes for stop watch char buf[10]; // string buffer for itoa function void setup() { lcd.begin(16, 2); // intialise the LCD. pinMode(ledPin, OUTPUT); // sets the digital pin as output pinMode(buttonPin, INPUT); // not really necessary, pins default to INPUT anyway digitalWrite(buttonPin, HIGH); // turn on pullup resistors. Wire button so that press shorts pin to ground. } void loop(){ digitalWrite(ledPin, LOW); // Initiate LED and Step Pin States buttonState = digitalRead(buttonPin); // Check for button press, read the button state and store // check for a high to low transition if true then found a new button press while clock is not running - start the clock if (buttonState == LOW && lastButtonState == HIGH && blinking == false){ startTime = millis(); // store the start time blinking = true; // turn on blinking while timing delay(10); // short delay to debounce switch lastButtonState = buttonState; // store buttonState in lastButtonState, to compare next time } // check for a high to low transition if true then found a new button press while clock is running - stop the clock and report else if (buttonState == LOW && lastButtonState == HIGH && blinking == true){ blinking = false; // turn off blinking, all done timing lastButtonState = buttonState; // store buttonState in lastButtonState, to compare next time // Routine to report elapsed time elapsedTime = millis() - startTime; // store elapsed time elapsedMinutes = (elapsedTime / 60000L); elapsedSeconds = (elapsedTime / 1000L); // divide by 1000 to convert to seconds - then cast to an int to print elapsedFrames = (elapsedTime / interval); // divide by 100 to convert to 1/100 of a second - then cast to an int to print fractional = (int)(elapsedFrames % frameRate); // use modulo operator to get fractional part of 100 Seconds fractionalSecs = (int)(elapsedSeconds % 60L); // use modulo operator to get fractional part of 60 Seconds fractionalMins = (int)(elapsedMinutes % 60L); // use modulo operator to get fractional part of 60 Minutes lcd.clear(); // clear the LDC if (fractionalMins < 10){ // pad in leading zeros lcd.print("0"); // add a zero } lcd.print(itoa(fractionalMins, buf, 10)); // convert the int to a string and print a fractional part of 60 Minutes to the LCD lcd.print(":"); //print a colan. if (fractionalSecs < 10){ // pad in leading zeros lcd.print("0"); // add a zero } lcd.print(itoa(fractionalSecs, buf, 10)); // convert the int to a string and print a fractional part of 60 Seconds to the LCD lcd.print(":"); //print a colan. if (fractional < 10){ // pad in leading zeros lcd.print("0"); // add a zero } lcd.print(itoa(fractional, buf, 10)); // convert the int to a string and print a fractional part of 25 Frames to the LCD } else{ lastButtonState = buttonState; // store buttonState in lastButtonState, to compare next time } // run commands at the specified time interval // blink routine - blink the LED while timing // check to see if it's time to blink the LED; that is, the difference // between the current time and last time we blinked the LED is larger than // the interval at which we want to blink the LED. if ( (millis() - previousMillis > interval) ) { if (blinking == true){ previousMillis = millis(); // remember the last time we blinked the LED digitalWrite(ledPin, HIGH); // Pulse the LED for Visual Feedback elapsedTime = millis() - startTime; // store elapsed time elapsedMinutes = (elapsedTime / 60000L); // divide by 60000 to convert to minutes - then cast to an int to print elapsedSeconds = (elapsedTime / 1000L); // divide by 1000 to convert to seconds - then cast to an int to print elapsedFrames = (elapsedTime / interval); // divide by 40 to convert to 1/25 of a second - then cast to an int to print fractional = (int)(elapsedFrames % frameRate);// use modulo operator to get fractional part of 25 Frames fractionalSecs = (int)(elapsedSeconds % 60L); // use modulo operator to get fractional part of 60 Seconds fractionalMins = (int)(elapsedMinutes % 60L); // use modulo operator to get fractional part of 60 Minutes lcd.clear(); // clear the LDC
منبع: آردوینو کرونومتر کد
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Arduino projects, running stopwatch on arduino.