Second Arduino Clock

myminifactory

Second Arduino Clock Updated version of the  Second Arduino Clock Adjustable with two buttons Here is a clock with hours, minutes and seconds 2 stepper motors, driven by an arduino nano and an RTC for accuracy. It includes two buttons to set up the hands at the right time See it here: The build video: https://youtu.be/9eBKjtjRucM Clock and prototype:  https://youtu.be/4Mqo7j9JnSA   All the parts are easy to find on Amazon, Ebay and others. For the wiring, look for schematics.pdf Here is the arduino code: /*  Jacques favre:drive 2 stepper motors to power a clock using a RTC for acuracy2 buttons to adjust time1 button: move secondsother button: move hours and minutes2 buttons: move hours and minutes backIncluding work from:# http://www.arduino.cc/en/Tutorial/BlinkWithoutDelay # https://learn.adafruit.com/adafruit-arduino-lesson-16-stepper-motors/arduino-code# Adafruit RTClib [](https://travis-ci.com/adafruit/RTClib)This is a fork of JeeLab's fantastic real time clock library for Arduino.For details on using this library with an RTC module like the DS1307, PCF8523, or DS3231, see the guide at: https://learn.adafruit.com/ds1307-real-time-clock-breakout-board-kit/overviewWorks great with Adafruit RTC breakouts:- [DS3231 Precision RTC](https://www.adafruit.com/product/3013)- [PCF8523 RTC](https://www.adafruit.com/product/3295)- [DS1307 RTC](https://www.adafruit.com/product/3296)To install, use the Arduino Library Manager to search for "RTClib", find "RTClib by Adafruit" and install the library.Please note that dayOfTheWeek() ranges from 0 to 6 inclusive with 0 being 'Sunday'. I use unixtime from the RTC with an interval of 1 second Every 1 second ask stepper motor to move x steps(seconds)Every 1 second ask stepper motorB to move x steps(hour and minutes)And blink the onboard led Drive a stepper motor to power a clockUsing kuman small stepper motor 5V 1/64 gearing and provided driver For the second hand:The exact gearing is 1/64with 32 steps at motor, that is 2048 steps at shaft revolution, divided by 60 for 1 second motion (6 degree)2048 x 1/60 = 34.133 steps/secondThe exact move would be 34.133333 steps per secondSo move 34 steps, keep track of reminder, and add 1 step when remainder bigger that 1Print info to console to keep track of progress Minute and hour motor calculationSame idea exept, ration 2:1 to minute, 1:6 to hourThat gives the 1:12 between minute and hourFor the minute:(the "second" formula / 120)(60 second in 1 minute, but ratio 2:1, so 120 )2048 x 1/60 x 1/120 = 0.284444 steps/secondSo move 0 steps, keep track of reminder, and add 1 step when remainder bigger that 1, move a stepPrint info to console to keep track of progressThe minute hand will move every 4 seconds or sometime after 3 seconds 2 buttons to set time: button 1 to move seconds button 2 to move hours/minutes forward both buttons to move hours/minutes back *///FOR RTC//Date and time functions using a DS3231 RTC connected via I2C and Wire lib#include #include "RTClib.h"RTC_DS3231 rtc;//FOR stepper#include // constants won't change. Used here to set a pin number:const int ledPin = LED_BUILTIN;// the number of the LED pin/built in led //2 button to adjust time const int button1pin = 7; // the number of the pushbutton pin, one for secondconst int button2pin = 8; // the number of the pushbutton pin, one four minutes and hours // 32 step motor // second motorStepper motor(32,9,11,10,12); // hour and minute motorStepper motorB(32,3,5,4,6); //and variable that will changeint ledState = LOW; // ledState used to set the LED //int button1State = 0; // variable for reading the pushbutton status//int button2State = 0; // variable for reading the pushbutton status unsigned long previousSECOND = 0; // will store last time LED was updated// constants won't change:const long interval = 1; // interval at which to blink (1 seconds) //For secondsconst float absoluteSteps = 512.000000/15; //2048 x 1/60 = 512/15 = 34.133333 steps/secondconst float extraStep = absoluteSteps - 34; // 0.133333 leftover remainder// variablesfloat totExtraStep; // to keep track of decimal part of stepsint totSteps; //adding all stepsint seconds; //display seconds counter // for hours and minutes//2048 x 1/60 x 1/120 = 64/225 = 0.284444 steps/second//neeed take ratio of gears, minute hand to motor ratio 2 to 1float absoluteStepsB = 64.000000/225; //0.284444 steps/second, calculated steps per second const float extraStepB = absoluteStepsB - 0; // 0.284444 leftover remainder// variablesfloat totExtraStepB; // to keep track of decimal part of stepsint totStepsB; //adding all steps// to print time to consoleunsigned long time; //SETUP****************************************void setup () { // set the digital pin for LED output: pinMode(ledPin, OUTPUT); // initialize the pushbutton pin as an input: //pinMode(buttonPin, INPUT); //for sec pinMode(button1pin, INPUT_PULLUP); //pinMode(buttonPin, INPUT); //for min and hour pinMode(button2pin, INPUT_PULLUP); #ifndef ESP8266 while (!Serial); // for Leonardo/Micro/Zero#endif //set motor speed motor.setSpeed(450); motorB.setSpeed(450); Serial.begin(9600);//start print to monitor if (! rtc.begin()) { Serial.println("Couldn't find RTC"); while (1); } if (rtc.lostPower()) { Serial.println("RTC lost power, lets set the time!"); // following line sets the RTC to the date & time this sketch was compiled rtc.adjust(DateTime(F(__DATE__), F(__TIME__))); // This line sets the RTC with an explicit date & time, for example to set // January 21, 2014 at 3am you would call: // rtc.adjust(DateTime(2014, 1, 21, 3, 0, 0)); } }//LOOP*****************************************void loop () {// here is where you'd put code that needs to be running all the time.//Creat RTC objectDateTime now = rtc.now();//load current second int steps; //acual steps as integer for the seconds int stepsB; //acual steps as integer for the minutes and hours // now the buttons// constant motionint i=0; // count how long button is pressed // check if the pushbutton is pressed. If it is, pin 7 to ground, the buttonState is LOW: if (digitalRead(button1pin) == LOW & digitalRead(button2pin) == HIGH) { motor.step(-2); //second move forward i++; Serial.print("Total i: "); Serial.println(i); //prints adjusted steps } if (digitalRead(button1pin) == HIGH & digitalRead(button2pin) == LOW) { motorB.step(-1); //hour,minutes move forward } else if (digitalRead(button1pin) == LOW & digitalRead(button2pin) == LOW) { motorB.step(1); //2 buttons press: hour,minutes move back } else { //work as a clock // check to see if it's time to move hands; that is, if the difference// between the current time and last time you moved the hand(s) is bigger than// the interval.unsigned long currentSECOND = now.unixtime(); if (currentSECOND - previousSECOND >= interval) {//print time to console Serial.print("Time: "); time = now.unixtime(); Serial.println(time); //prints time since program started seconds++; // count the seconds at each time "if function" is true, check for drifting/debuging? previousSECOND = currentSECOND;//And do something// if the LED is off turn it on and vice-versa: if (ledState == LOW) { ledState = HIGH; } else { ledState = LOW; } // set the LED with the ledState of the variable: digitalWrite(ledPin, ledState); //And activate the stepper motors//FOR THE SECOND MOTOR*********************************** steps = int(absoluteSteps);//convert float steps to integer steps, loop alway start with 34.133 totExtraStep = totExtraStep + extraStep;// and keep track of the decimal part of steps //and IF the decimal gets bigger than 1, add a step to steps and substratc 1 to totExtraSteps if (totExtraStep > 1){ totExtraStep = totExtraStep - 1; steps = steps + 1; } totSteps = totSteps + steps;//for display //move x steps, 34 or 35 motor.step(-steps); //seconds motor!! - to move in correct direction!! //Serial.print("INT Steps seconds: "); ///Serial.println(steps); //prints integer steps //Serial.print("Tot Extra Steps: "); //Serial.println(totExtraStep); //prints adjusted steps Serial.print("Total Steps seconds: "); Serial.println(totSteps); //prints adjusted steps Serial.print("Steps seconds/2048: "); Serial.println(totSteps/2048); //prints actual minutes for every 60 seconds Serial.print("Total seconds counter: "); Serial.println(seconds); //prints adjusted steps //FOR THE MINUTES************************************ stepsB = int(absoluteStepsB);//convert float steps to integer steps, loop actually start with 0 (0.284....) totExtraStepB = totExtraStepB + extraStepB;// and keep track of the decimal part of steps //and IF the decimal gets bigger than 1, add a step to steps and substratc 1 to totExtraSteps if (totExtraStepB > 1){ totExtraStepB = totExtraStepB - 1; stepsB = stepsB + 1; } //move x steps, 0 or 1 motorB.step(-stepsB);// move minute, hour stepper, backwards because of gears totStepsB = totStepsB + stepsB;//for display //Serial.print("Steps to do: "); //Serial.println(absoluteStepsB,6); //prints float steps to do minutes //Serial.print("Adding Steps to do: "); //Serial.println(absoluteStepsB); //prints float steps to do //Serial.print("INT Steps minutes: "); //Serial.println(stepsB); //prints integer steps //Serial.print("Tot Extra Steps: "); //Serial.println(totExtraStepB,6); //prints adjusted steps Serial.print("Total Steps minutes: "); Serial.println(totStepsB); //prints adjusted steps }//end if intervall over } //end of: else { work as a clock...}//end of loop