Mid | Notion

IDEA

The path the timekeeper follows is a twelve-hour circular orbit in general. I wanted to break the notion of timekeeper. In our daily lives, we usually divide time to use it. Three hours, a unit of time to focus on something for me.

Appearance : If the time exists every three hours, to express it in a minimal way, I wanted to disappear the rest of the part except for the quarter area, but still how to solve the visible area of the motor.

simul_2.mp4

Quater, a fragment of time. After a three-hour journey, to start a new three-hour journey, the hour hand returns to the starting point, then drags and rotates the window down.

Process

With a biaxial motor, test the operation of the hour hand and minute hand separately to confirm that it is precisely 720 steps per revolution, then run both of them.
Apply the RTC function to the steps for the minute hand and hour hand.

/*
  VID28-05 Motor Control

  Controls two stepper motors at once, used to test a VID28-05 
  concentric shaft motor

  Created 24 May 2018
  modified 20 Jan 2020
  by Tom Igoe

*/

#include <Stepper.h>
#include <RTCZero.h>

//const int stepsPerRevolution = 720;  // VID28-05 is 720 steps per revolution

const int stepsPerHour = 720;   // Number of steps for a full hour rotation (adjust as needed)  // VID28-05 is 720 steps per revolution
const int stepsPerMinute = 720;

// initialize the stepper library. 
// Any 8 pins will do. These numbers were used for the MKR Zero form factor:
Stepper hourMotor(stepsPerHour, 7, 8, 9, 10);
Stepper minuteMotor(stepsPerMinute, 2, 3, 4, 5);

int hourSteps = 0;
int minuteSteps = 0;
// motors will move in opposite directions:
int hourDir = -1;     
int minuteDir = -1;

RTCZero rtc;

void setup() {
  // initialize the serial port:
  Serial.begin(9600);
  rtc.begin();

  // Check if the RTC has lost power and if so, set the time
  if (!rtc.isConfigured()) {
    rtc.setTime(12, 0, 0); // Set the time to 12:00:00
  }

}

void loop() {
  int currentHour = rtc.getHours();
  int currentMinute = rtc.getMinutes();

  // Calculate the desired position for the minute motor based on the current minute
  int desiredHourPosition = currentHour * (stepsPerHour / 12); 
  int desiredMinutePosition = currentMinute * (stepsPerMinute / 60);

  // Move the minute motor to the desired position
  while (minuteSteps != desiredMinutePosition) {
    if (minuteSteps < desiredMinutePosition) {
      minuteMotor.step(minuteDir);
      minuteSteps++;
    } else {
      minuteMotor.step(-minuteDir);
      minuteSteps--;
    }
    delayMicroseconds(5000); // Adjust for your desired speed
  }

  while (hourSteps != desiredHourPosition) {
    if (hourSteps < desiredHourPosition) {
      hourMotor.step(hourDir);
      hourSteps++;
    } else {
      hourMotor.step(-hourDir);
      hourSteps--;
    }
    delayMicroseconds(5000); // Adjust for your desired speed
  }

  // [[for a test]]    // Move the minute motor
  //  for (int i=0; i<stepsPerMinute; i++){
  //    //hypothesis - 720 steps per revolution
  //  // hourMotor.step(1);
  //   //minuteMotor.step(1);
  //   minuteMotor.step(minuteDir);
  //   delayMicroseconds(5000);      //this value determines the speed - higher means more time between steps and therefore slower
  //  } 

    // Print the current minute and the minute motor's position to the serial monitor
  Serial.print("Current Hour: ");
  Serial.println(currentHour);
  Serial.print("Current Minute: ");
  Serial.println(currentMinute);
  Serial.print("Hour Motor Position: ");
  Serial.println(hourSteps);
  Serial.print("Minute Motor Position: ");
  Serial.println(minuteSteps);
  
 delay(1000);

}