A cool timer

This is a timer that can be setup without watching the device using just a push button. It can be useful for blind.

projectImage

Things used in this project

Hardware components

HARDWARE LIST
1 DFRobot DF Robot Gravity Speech Synthesis Module SKU DFR0760
1 Arduino Nano R3
1 Push Button
1 4 Digit Display

Hand tools and fabrication machines

Drill / Driver, Cordless

Story

 

I was looking for a timer that could be setup without looking at the display. Mainly the purpose was to have, while cooking, a voice telling me how many minutes were left before the end.

 

So I created this simple device with the intent to use it in the kitchen.

 

The use is very simple. There is only one push button that every time you press it, there is an increase of one minute and a voice tells you how many minutes you have accumulated. If you make a mistake, you need to keep a long push on the button and the counter is reset.

 

Once you have finished, you just need to double click the push button and then the counter starts.

 

Every minute, a voice tells you how many minutes are missing before the end.

 

I used very simple components and for the voice I used a DFRobot Gravity DFR0760 module. It works quite well.

Schematics

Smart Timer

icon smart_timer_schem_K7hXyID1iI.zip 243KB Download(4)

Code

Smart Timer

Arduino

CODE
/*
 * Carlo Stramaglia
 * https://www.youtube.com/c/CarloStramaglia
 * This is a Smart Timer that
 * once you set it up, will remind you every quarter to check the food in the pan
 * June 1st 2021
 */

#include "DFRobot_SpeechSynthesis.h"
#include <TM1637.h>
#include "OneButton.h"

int minutes=00;
int seconds=0;
char tmp[5];

DFRobot_SpeechSynthesis_I2C ss;

// Display Pins configurations
// Pin 3 - > DIO
// Pin 2 - > CLK
TM1637 tm1637(2, 3);

// Push Button PIN definition
#define PIN_INPUT A2

OneButton button(PIN_INPUT, true);

void setup() {
  Serial.begin(115200);
  Serial.println("Smart Timer sketch. Carlo Stramaglia https://www.youtube.com/c/CarloStramaglia");
  //Init speech synthesis sensor
  ss.begin();
  //Set voice volume to 7
  ss.setVolume(7);
  //Set playback speed to 5
  ss.setSpeed(5);
  //Set speaker to female 
  ss.setSoundType(ss.MALE1);
  //Set tone to 5
  ss.setTone(5);
  ss.setSpeechStyle(ss.SMOOTH);
  ss.setEnglishPron(ss.WORD);
  ss.setDigitalPron(ss.AUTOJUDGED);
  ss.setLanguage(ss.ENGLISHL);
  tm1637.init();
  tm1637.setBrightness(5);
  button.attachClick(singleClick);
  button.attachDoubleClick(doubleClick);
  button.attachLongPressStart(longPressStart);
  tm1637.clearScreen();
  tm1637.colonOn();
  tm1637.display("0000");
  tm1637.colonOn();
  delay(100);
  

}

void loop() {
  button.tick();
  delay (10);
}

void singleClick()
{
  Serial.println("x1");
  minutes++;
  Serial.println(minutes);
  sprintf(tmp, "%d", minutes);
  ss.speak((tmp));
  delay (100);
  ss.speak(F("minutes set"));
  if (minutes < 10)
      tm1637.display(minutes,1,0,1);
  else
      tm1637.display(minutes);
  Serial.println(tmp);
  delay(100);
} // singleClick


void doubleClick()
{
  Serial.println("x2");
  if (minutes == 0) return;
  ss.speak(F("Starting countdown"));
  minutes--;
  for (minutes ; minutes >= 0; minutes--) {
        for (int seconds = 59; seconds >= 0; seconds--) {
            if (minutes < 10 && minutes >0)
              tm1637.display(seconds + minutes*100,1,0,1);
            else if (minutes == 0 && seconds >=10)
              tm1637.display(seconds + minutes*100,1,0,2);
            else if (minutes == 0 && seconds < 10)
              tm1637.display(seconds + minutes*100,1,0,3);
            else               
              tm1637.display(seconds + minutes*100); 
            tm1637.switchColon(); 
            if (seconds == 0)
            {
              sprintf(tmp,"%d", minutes);
              ss.speak(tmp);
              delay(100);
              ss.speak(F("minutes left"));
            }
            delay(1000);
        }
    }
  ss.speak(F("Time finished"));
  delay (1000);
  ss.speak(F("you can setup a new timer now"));
  tm1637.colonOn();
  tm1637.display("0000");
  minutes = 0;
  tm1637.colonOn();
  delay(100);  

} // doubleClick

void longPressStart()
{
  Serial.println("long Press");
  minutes = 0;
  ss.speak(F("Counter reset"));
  tm1637.colonOn();
  tm1637.display("0000");
  tm1637.colonOn();
  delay(100);  
} // longPressStart

The article was first published in hackster, June 2, 2021

cr: https://www.hackster.io/cstram/cool-timer-with-voice-synthesizer-edfead

author: cstram

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