Buzz Wire Alarm Clock Using Arduino

Contents hide

1 Step 1: Buzz Wire Alarm Clock

2 Step 2: Parts List

3 Step 3: The Display

4 Step 4: Arduino Hardware Set Up

5 Step 5: Arduino Software Set Up

6 Step 6: Coding

7 Step 7: Alarm Stand and Deactivation Circuit: Contact Rings

Does it happen to you to slide your finger across your phone’s screen and turn the alarm off … just because you have automated this task and don’t even need to open your eyes?

Well, let me present to you the alarm clock that WILL MAKE YOU:

….. stand from the bed ….. open your eyes ….. get you absolutely focused ….. and finally WAKE UP !!!

Here are some stories from life that may encourage you to buld such a 100%-wake-up-clock for yourself …

I am an engineering student in third year now and this speaks that I do not get enough sleep during the term time.

For me being prepared means actually managing to wake up for the 9am lecture which is very tough ….. and unfortunately I have to do it every day except Thursday and the weekends. It comes hard when I have an assessment in the lab and really have to do it that early.

I have joined the Instructables Be Prepared Contest because it is quite dramatic when I oversleep and then rush without having breakfast and miss the bus … and have to walk another 40mins going to the second lecture. I hate myself when this happens.

I want to add a happy-ending story that once happened to me to wake up at 7am while I had a flight at 8:30am and now I’m scared to oversleep whenever I’m going to bed.

Step 1: Buzz Wire Alarm Clock

I was inspired by some sort of a game that you need to focus and move a hook across a wire and not touch the wire …

The Buzz Wire Alarm Clock shares exactly the same idea …

First you set the time / screen brightness
You have a nice clock that even beeps every exact hour!
Then you set two alarms – Alarm 1 and Alarm 2 ON/OFF/Set time
Wait for the alarm to start beeping the buzzer and flashing the lights – Now you want to turn the alarm off
Get the hook and touch either end of the alarm stand
Carefully get the hook across the other end of the alarm stand without touching the wire – ALARM OFF 🙂
If you happen to touch the wire 🙁 Now repeat again starting from either end of the alarm stand

As simple as that.

And what’s more cool – you can customize the buzz wire to your own preferences – make it look like a roller coaster or maybe simple and with minimum bends.
You can also choose the hole diameter of the hook!

Below is the settings video:

Step 2: Parts List

To complete this instructable you will need:

Arduino board (I used Arduino Uno, but similar would do … Arduino Mega etc.)
Arduino Prototyping shield OR any breadbord would do
4-digit 7-segment display – the one I used is from Adafruit (If you want to use my Arduino code, you will need the same display, but if you decide to connect 4 separate 7-segment displays … then write your own code)
Resistors – 5pcs, anything between 20 kOhm and 50 kOhm
Button swithes – 3pcs
Buzzer
Wires
Heat shrink tubing
Cable shield
Piece of foam – 10 x 3 x 3 cm (could use cardboard or wood)
Sticky notes for decoration

Basic tools required:

Soldering iron & wire
Cable strippers/cutters
Lighter or heat gun

Step 3: The Display

Plug the 4-digit 7-segment display into the board using the correct orientation – the four lower dots are marked on the board.

Solder the 14 pins and trim the excess wires.

Plug and solder the 4-pin header.

Step 4: Arduino Hardware Set Up

I have not specifically shown the building process as it is very straight forward. Also, there is an unlimited number of ways you can put your components around just at your best convenience.

The pins as programmed are:

Analog:

A4 – Screen data
A5 – Screen Clock signal

Digital:

2 – Buzzer (output)
3 – LED set one (output)
4 – LED set two (output)
5 – Button switch for minutes (input)
8 – Button switch for hours (input)
10 – Button switch for settings/in/out (input)
11 – One contact ring of alarm stand (input)
12 – Other contact ring of alarm stand (input)
13 – Buzz wire (input)
14 – Used as ground

Step 5: Arduino Software Set Up

Download the Adafruit LED Backpack library from github
You’ll also need to download the Adafruit GFX library that provides the graphics drawing routines, and must be installed! To download click the DOWNLOADS button in the top right corner, download, uncompress. The uncompressed folders Adafruit_LEDBackpack & Adafruit_GFX are what you need. Check that the Adafruit_LEDBackpack folder contains Adafruit_LEDBackpack.cpp and Adafruit_LEDBackpack Place the Adafruit_LEDBackpack & Adafruit_GFX library folders in your arduinosketchfolder/libraries/ folder. You may need to create the libraries subfolder if its your first library.

*If you get stuck at some point here, do not hesitate to ask me.

I have uploaded a pic to show you the folder structure.

Step 6: Coding

Here is the developed version of the software that you should upload to the Arduino Uno.

It took me around a week to complete it.

You may notice some new functions like:

matrix.writeDigitRaw(0,B01110111); //”A” < This is the bit to the left
matrix.writeDigitRaw(1,B00111000); //”l” < This is the middle left bit
matrix.writeDigitRaw(3,B11010000); //”r.” < This is the middle right bit
matrix.writeDigitRaw(4,B00000000); //” ” < This is the bit to the right
matrix.writeDisplay(); < This is needed to “put” your symbols to the display

This is all to do with the 4-digit display and the way that you write characters to it.
The above lines of code would mean that “Alr. ” is written on the screen where “B11010000” is an 8-bit mask.

Program code:

/*************************************************** Clock v 8.0 by Pavel Mihaylov Oct 2012 ****************************************************/ #include <Wire.h> #include “Adafruit_LEDBackpack.h” #include “Adafruit_GFX.h” Adafruit_7segment matrix = Adafruit_7segment(); //int pwr = A2; //int grnd = A3; //Buttons int alarm_off_1 = 11; int alarm_off_2 = 12; int alarm_wire = 13; int button_set_mins_in = 5; int button_set_hrs_in = 8; int button_settings_in = 10; int beeper = 2; int led_RGB_1 = 3; int led_RGB_2 = 4; //Constants int brightness = 6; //Matrix initial brightness: 0(dimmed) – 15(bright) int del = 160; //120 Delay betweeen screens when writing messages int del2 = 320; //320 Delay betweeen “PAUSE” screens when writing messages long int millis_left = 0; int beep_delay = 7; //Length of a beep sound when a button is pressed int beepOK = 0; //Variable checked whether it is an exact hour in order to produce two beeps: beepOK = 1 if minutes = 59, otherwise beepOK = 0; int alarm_1_time = 2400; //Holds alarm time DO NOT CHANGE int alarm = 1; //alarm status DO NOT CHANGE long int offset_m = 0; //minutes setting offset unsigned long time; int h, m, s; int h1, h2, m3, m4; int a1h1, a1h2, a1m3, a1m4; void setup() { pinMode(beeper, OUTPUT); pinMode(led_RGB_1, OUTPUT); pinMode(led_RGB_2, OUTPUT); pinMode(button_set_mins_in, INPUT); pinMode(button_set_hrs_in, INPUT); pinMode(button_settings_in, INPUT); pinMode(alarm_off_1, INPUT); pinMode(alarm_off_2, INPUT); pinMode(alarm_wire, INPUT); digitalWrite(beeper, LOW); digitalWrite(led_RGB_1, LOW); digitalWrite(led_RGB_2, LOW); Serial.begin(9600); Serial.println(“7 Segment Backpack Test”); matrix.begin(0x70); matrix.setBrightness(brightness); } //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// void loop() { //Write time Serial.print(” — Time \n”); writetime(); delay(30); //Draw dots drawDots(); delay(30); //Check whether to go into settings mode if(digitalRead(button_settings_in) == HIGH){ beep(); Serial.print(“In settings \n”); settings(); } delay(30); //Now check if we have alarm acivated! gettime(); //Serial.print(“Before: Alarm = “); //Serial.print(alarm); //Serial.print(“\n”); //delay(30); if( time == alarm_1_time && alarm){ //alarm = 0; alarm_beep(); //Play the beep Serial.print(“NO MORE BEEP \n”); delay(500); } else if(time != alarm_1_time) alarm = 1; //Serial.print(“After: Alarm = “); //Serial.print(alarm); //Serial.print(“\n”); //Serial.print(“NO ALARM \n”); //delay(60); //Check brightness if (digitalRead(button_set_mins_in) == HIGH){ //check minutes button brightness++; //increase brightness beep(); if( brightness > 15 ) { brightness = 15; delay(beep_delay); beep(); delay(beep_delay); beep(); } matrix.setBrightness(brightness); Serial.print(“Brightness level changed:”); Serial.print(brightness); Serial.print(“\n”); delay(150); } if (digitalRead(button_set_hrs_in) == HIGH){ //check hours button brightness–; //decrease brightness beep(); if( brightness < 0 ) { brightness = 0; delay(beep_delay); beep(); delay(beep_delay); beep(); } matrix.setBrightness(brightness); Serial.print(“Brightness level changed:”); Serial.print(brightness); Serial.print(“\n”); delay(150); } } //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// //Draw dots every second – On/Off void drawDots(){ gettime(); if((s%2) == 1){ matrix.drawColon(false); matrix.writeDisplay(); } else{ matrix.drawColon(true); matrix.writeDisplay(); } } //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// int gettime(){ time = millis(); time += offset_m; h = int(time/3600000); //Get time in hours in variable h if(h > 23) do{ h -= 24; } while(h > 23); //If hours exceed 23, cunstract 24 until hours are 23 or less time = time%3600000; m = int(time/60000); //Get time in minutes in variable m time = time%60000; s = int(time/1000); //Get time in seconds in variable s millis_left = time; time = h*100 + m; //loop to produce two beeps at an exact hour i.e. XX:00 if(m == 0 && beepOK){ beep(); delay(beep_delay*6); beep(); beepOK = 0; } else if(m == 59) beepOK = 1; return time; } void writetime(){ gettime(); h1 = time/1000; time -= h1*1000; h2 = time/100; time -= h2*100; m3 = time/10; m4 = time%10; matrix.writeDigitNum(0, h1); matrix.writeDigitNum(1, h2); matrix.writeDigitNum(3, m3); matrix.writeDigitNum(4, m4); matrix.writeDisplay(); } void settings(){ delay(500); print_set(); //Print “Set” on the screen //Firstly set the time do{ set_hrs_mins(); } while (digitalRead(button_settings_in) == LOW); beep(); print_set_alrarm_1(); //Print “Set” on the screen //Then set Alarm 1 do{ set_alarm_1(); } while (digitalRead(button_settings_in) == LOW); beep(); print_out(); delay(500); } //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// //Function to set time offset in minutes and hours void set_hrs_mins(){ if (digitalRead(button_set_mins_in) == HIGH){ //check minutes button offset_m = offset_m + 60000; //add one minute to offset beep(); Serial.print(“Increment minutes”); Serial.print(offset_m); Serial.print(“\n”); delay(200); } if (digitalRead(button_set_hrs_in) == HIGH){ //check hours button offset_m = offset_m + 60*60000; //add 60*1 minutes to offset the time beep(); Serial.print(“Increment hours”); Serial.print(offset_m); Serial.print(“\n”); delay(200); } beepOK = 0; gettime(); //Now make the display blink while setting the time. if((millis_left%1000) > 500){ //0.5 seconds lit up writetime(); matrix.drawColon(true); matrix.writeDisplay(); } else{ matrix.drawColon(false); //0.5 seconds lit off matrix.writeDigitRaw(0,B00000000); //” “ matrix.writeDigitRaw(1,B00000000); //” “ matrix.writeDigitRaw(3,B00000000); //” “ matrix.writeDigitRaw(4,B00000000); //” “ matrix.writeDisplay(); } } //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// //Function to set Alarm time 1 void set_alarm_1(){ if (digitalRead(button_set_mins_in) == HIGH){ //check minutes button if(alarm_1_time==2400){ alarm_1_time = 0; } alarm_1_time++; //add one minute to offset beep(); Serial.print(“Increment alarm minutes “); Serial.print(alarm_1_time); Serial.print(“\n”); delay(200); } if (digitalRead(button_set_hrs_in) == HIGH){ //check hours button if(alarm_1_time==2400){ alarm_1_time = 0; } alarm_1_time += 100; //add 60*1 minutes to offset the time beep(); Serial.print(“Increment alarm hours “); Serial.print(alarm_1_time); Serial.print(“\n”); delay(200); } if(alarm_1_time%100 == 60){ //alarm time is now maybe 1260, but it should not be! alarm_1_time += 40; //alarm time goes to 1300 Serial.print(“Alarm 1 time corrected to +40\n”); } if(alarm_1_time > 2359){ //alarm time is now 2401, but it should not be! alarm_1_time = 2400; //alarm time goes to 0000 Serial.print(“Alarm 1 time corrected to 0000\n”); } Serial.print(“Alarm 1 time: “); Serial.print(alarm_1_time); Serial.print(“\n”); gettime(); //Now make the display blink while setting the Alarm 1 time. if((millis_left%1000) > 500){ //0.5 seconds lit up if(alarm_1_time == 2400){ //If alarm is deactivated from user matrix.drawColon(false); matrix.writeDigitRaw(0,B01000000); //”-“ matrix.writeDigitRaw(1,B01000000); //”-“ matrix.writeDigitRaw(3,B01000000); //”-“ matrix.writeDigitRaw(4,B01000000); //”-“ matrix.writeDisplay(); } else{ a1h1 = alarm_1_time/1000; a1h2 = ( alarm_1_time – a1h1 * 1000 ) / 100; a1m3 = ( alarm_1_time – a1h1 * 1000 – a1h2 * 100 ) / 10; a1m4 = alarm_1_time % 10; matrix.drawColon(true); matrix.writeDigitNum(0, a1h1); matrix.writeDigitNum(1, a1h2); matrix.writeDigitNum(3, a1m3); matrix.writeDigitNum(4, a1m4); matrix.writeDisplay(); } } else{ matrix.drawColon(false); //0.5 seconds lit off matrix.writeDigitRaw(0,B00000000); //” “ matrix.writeDigitRaw(1,B00000000); //” “ matrix.writeDigitRaw(3,B00000000); //” “ matrix.writeDigitRaw(4,B00000000); //” “ matrix.writeDisplay(); } } //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// //Beep-Beep Alarm void alarm_beep(){ int count0 = 0; do{ count0++; int count = 0; //cut the beep at some point writetime(); drawDots(); delay(20); digitalWrite(led_RGB_1, HIGH); digitalWrite(led_RGB_2, HIGH); if( count0%3 == 0 ){ print_sad(); //Print a sad smile delay(300); } //Serial.print(“In alarm – beep \n”); beep(); delay(100); beep(); delay(100); beep(); delay(150); if (digitalRead(alarm_off_1) == HIGH){ //Serial.print(“One 1 end touched 🙂 \n”); digitalWrite(led_RGB_1, LOW); print_smile(); delay(500); do{ //Now beep less if(count%5 == 0) { beep(); } count++; writetime(); drawDots(); if (digitalRead(alarm_off_2) == HIGH){ //Alarm off //Serial.print(“Other 2 end touched, alarm = 0 \n”); digitalWrite(led_RGB_2, LOW); alarm = 0; break; } //Serial.print(“In while loop 1! \n”); delay(100); } while(digitalRead(alarm_wire) == LOW || alarm == 0); delay(100); //Serial.print(“While loop exited, now exit alarm \n”); } else if (digitalRead(alarm_off_2) == HIGH){ //Serial.print(“One 2 end touched 🙂 \n”); digitalWrite(led_RGB_2, LOW); print_smile(); delay(500); do{ //Now beep less if(count%5 == 0) { beep(); } count++; writetime(); drawDots(); if (digitalRead(alarm_off_1) == HIGH){ //Alarm off //Serial.print(“Other 1 end touched, alarm = 0 \n”); digitalWrite(led_RGB_1, LOW); alarm = 0; break; } Serial.print(“In while loop 2! \n”); delay(100); } while(digitalRead(alarm_wire) == LOW || alarm == 0); delay(100); //Serial.print(“While loop exited, now exit alarm \n”); //exit; } } while( alarm != 0 ); print_smile(); //Show a smile delay(700); print_alarm_off(); //Serial.print(“I said!!!!! Exit alarm loop: Alarm = “); //Serial.print(alarm); //Serial.print(“\n”); } // ” ” B00000000 // S B01101101 // E B01111001 // t B01111000 // O B00111111 // u B00011100 // A B01110111 // l B00111000 (letter) // r. B11010000 // r B01010000 // 1 B00000110 (digit) // H B01110110 // o B01011100 // ] B00001111 // [ B00111001 // F B01110001 //Print “Set Hour” on screen – Rolling void print_set(){ matrix.drawColon(false); matrix.writeDigitRaw(0,B00000000); //” “ matrix.writeDigitRaw(1,B00000000); //” “ matrix.writeDigitRaw(3,B00000000); //” “ matrix.writeDigitRaw(4,000000000); //” “ matrix.writeDisplay(); delay(del); //” “ //” “ //” “ matrix.writeDigitRaw(4,B01101101); //”S” matrix.writeDisplay(); delay(del); //” “ //” “ matrix.writeDigitRaw(3,B01101101); //”S” matrix.writeDigitRaw(4,B01111001); //”E” matrix.writeDisplay(); delay(del); //” “ matrix.writeDigitRaw(1,B01101101); //”S” matrix.writeDigitRaw(3,B01111001); //”E” matrix.writeDigitRaw(4,B01111000); //”t” matrix.writeDisplay(); delay(del); matrix.writeDigitRaw(0,B01101101); //”S” matrix.writeDigitRaw(1,B01111001); //”E” matrix.writeDigitRaw(3,B01111000); //”t” matrix.writeDigitRaw(4,B00000000); //” “ matrix.writeDisplay(); delay(del2); matrix.writeDigitRaw(0,B01111001); //”E” matrix.writeDigitRaw(1,B01111000); //”t” matrix.writeDigitRaw(3,B00000000); //” “ matrix.writeDigitRaw(4,B01110110); //”H” matrix.writeDisplay(); delay(del); matrix.writeDigitRaw(0,B01111000); //”t” matrix.writeDigitRaw(1,B00000000); //” “ matrix.writeDigitRaw(3,B01110110); //”H” matrix.writeDigitRaw(4,B01011100); //”o” matrix.writeDisplay(); delay(del); matrix.writeDigitRaw(0,B00000000); //” “ matrix.writeDigitRaw(1,B01110110); //”H” matrix.writeDigitRaw(3,B01011100); //”o” matrix.writeDigitRaw(4,B00011100); //”u” matrix.writeDisplay(); delay(del); matrix.writeDigitRaw(0,B01110110); //”H” matrix.writeDigitRaw(1,B01011100); //”o” matrix.writeDigitRaw(3,B00011100); //”u” matrix.writeDigitRaw(4,B01010000); //”r” matrix.writeDisplay(); delay(del2); matrix.writeDigitRaw(0,B01011100); //”o” matrix.writeDigitRaw(1,B00011100); //”u” matrix.writeDigitRaw(3,B01010000); //”r” matrix.writeDigitRaw(4,B00000000); //” “ matrix.writeDisplay(); delay(del); matrix.writeDigitRaw(0,B00011100); //”u” matrix.writeDigitRaw(1,B01010000); //”r” matrix.writeDigitRaw(3,B00000000); //” “ matrix.writeDisplay(); delay(del); matrix.writeDigitRaw(0,B01010000); //”r” matrix.writeDigitRaw(1,B00000000); //” “ matrix.writeDisplay(); delay(del); matrix.writeDigitRaw(0,B00000000); //” “ matrix.writeDisplay(); delay(del*3); } void print_out(){ //Print “Out” on screen. Rolling. matrix.drawColon(false); matrix.writeDigitRaw(0,B00000000); //” “ matrix.writeDigitRaw(1,B00000000); //” “ matrix.writeDigitRaw(3,B00000000); //” “ matrix.writeDigitRaw(4,000000000); //” “ matrix.writeDisplay(); delay(del); //matrix.writeDigitRaw(0,B00000000); //” “ //matrix.writeDigitRaw(1,B00000000); //” “ //matrix.writeDigitRaw(3,B00000000); //” “ matrix.writeDigitRaw(4,B00111111); //”O” matrix.writeDisplay(); delay(del); //matrix.writeDigitRaw(0,B00000000); //” “ //matrix.writeDigitRaw(1,B00000000); //” “ matrix.writeDigitRaw(3,B00111111); //”O” matrix.writeDigitRaw(4,B00011100); //”u” matrix.writeDisplay(); delay(del); //matrix.writeDigitRaw(0,B00000000); //” “ matrix.writeDigitRaw(1,B00111111); //”O” matrix.writeDigitRaw(3,B00011100); //”u” matrix.writeDigitRaw(4,B01111000); //”t” matrix.writeDisplay(); delay(del); matrix.writeDigitRaw(0,B00111111); //”O” matrix.writeDigitRaw(1,B00011100); //”u” matrix.writeDigitRaw(3,B01111000); //”t” matrix.writeDigitRaw(4,B00000000); //” “ matrix.writeDisplay(); delay(del2); matrix.writeDigitRaw(0,B00011100); //”E” matrix.writeDigitRaw(1,B01111000); //”t” matrix.writeDigitRaw(3,B00000000); //” “ //matrix.writeDigitRaw(4,B00000000); //” “ matrix.writeDisplay(); delay(del); matrix.writeDigitRaw(0,B01111000); //”t” matrix.writeDigitRaw(1,B00000000); //” “ //matrix.writeDigitRaw(3,B00000000); //” “ //matrix.writeDigitRaw(4,B00000000); //” “ matrix.writeDisplay(); delay(del); matrix.writeDigitRaw(0,B00000000); //” “ matrix.writeDisplay(); delay(del*3); } //Print “Set Alr. 1″ on screen – Rolling void print_set_alrarm_1(){ matrix.drawColon(false); matrix.writeDigitRaw(0,B00000000); //” “ matrix.writeDigitRaw(1,B00000000); //” “ matrix.writeDigitRaw(3,B00000000); //” “ matrix.writeDigitRaw(4,B00000000); //” “ matrix.writeDisplay(); delay(del); //” “ //” “ //” “ matrix.writeDigitRaw(4,B01101101); //”S” matrix.writeDisplay(); delay(del); //” “ //” “ matrix.writeDigitRaw(3,B01101101); //”S” matrix.writeDigitRaw(4,B01111001); //”E” matrix.writeDisplay(); delay(del); //” “ matrix.writeDigitRaw(1,B01101101); //”S” matrix.writeDigitRaw(3,B01111001); //”E” matrix.writeDigitRaw(4,B01111000); //”t” matrix.writeDisplay(); delay(del); matrix.writeDigitRaw(0,B01101101); //”S” matrix.writeDigitRaw(1,B01111001); //”E” matrix.writeDigitRaw(3,B01111000); //”t” matrix.writeDigitRaw(4,B00000000); //” “ matrix.writeDisplay(); delay(del2); matrix.writeDigitRaw(0,B01111001); //”E” matrix.writeDigitRaw(1,B01111000); //”t” matrix.writeDigitRaw(3,B00000000); //” “ matrix.writeDigitRaw(4,B01110111); //”A” matrix.writeDisplay(); delay(del); matrix.writeDigitRaw(0,B01111000); //”t” matrix.writeDigitRaw(1,B00000000); //” “ matrix.writeDigitRaw(3,B01110111); //”A” matrix.writeDigitRaw(4,B00111000); //”l” matrix.writeDisplay(); delay(del); matrix.writeDigitRaw(0,B00000000); //” “ matrix.writeDigitRaw(1,B01110111); //”A” matrix.writeDigitRaw(3,B00111000); //”l” matrix.writeDigitRaw(4,B11010000); //”r.” matrix.writeDisplay(); delay(del); matrix.writeDigitRaw(0,B01110111); //”A” matrix.writeDigitRaw(1,B00111000); //”l” matrix.writeDigitRaw(3,B11010000); //”r.” matrix.writeDigitRaw(4,B00000000); //” “ matrix.writeDisplay(); delay(del2); matrix.writeDigitRaw(0,B00111000); //”l” matrix.writeDigitRaw(1,B11010000); //”r.” matrix.writeDigitRaw(3,B00000000); //” “ matrix.writeDigitRaw(4,B00000110); //”1″ matrix.writeDisplay(); delay(del); matrix.writeDigitRaw(0,B11010000); //”r.” matrix.writeDigitRaw(1,B00000000); //” “ matrix.writeDigitRaw(3,B00000110); //”1″ matrix.writeDigitRaw(4,B00000000); //” “ matrix.writeDisplay(); delay(del); matrix.writeDigitRaw(0,B00000000); //” “ matrix.writeDigitRaw(1,B00000110); //”1″ matrix.writeDigitRaw(3,B00000000); //” “ matrix.writeDisplay(); delay(del); matrix.writeDigitRaw(0,B00000110); //”1″ matrix.writeDigitRaw(1,B00000000); //” “ matrix.writeDisplay(); delay(del2); matrix.writeDigitRaw(0,B00000000); //” “ matrix.writeDisplay(); delay(del*3); } ///////////////////////////////////////////////////////////////////////////////////////////////////////////////// // Print “Alarm Off” void print_alarm_off(){ matrix.drawColon(false); matrix.writeDigitRaw(0,B00000000); //” “ matrix.writeDigitRaw(1,B00000000); //” “ matrix.writeDigitRaw(3,B00000000); //” “ matrix.writeDigitRaw(4,B00000000); //” “ matrix.writeDisplay(); delay(del); matrix.writeDigitRaw(0,B00000000); //” “ matrix.writeDigitRaw(1,B00000000); //” “ matrix.writeDigitRaw(3,B00000000); //” “ matrix.writeDigitRaw(4,B01110111); //”A” matrix.writeDisplay(); delay(del); matrix.writeDigitRaw(0,B00000000); //” “ matrix.writeDigitRaw(1,B00000000); //” “ matrix.writeDigitRaw(3,B01110111); //”A” matrix.writeDigitRaw(4,B00111000); //”l” matrix.writeDisplay(); delay(del); matrix.writeDigitRaw(0,B00000000); //” “ matrix.writeDigitRaw(1,B01110111); //”A” matrix.writeDigitRaw(3,B00111000); //”l” matrix.writeDigitRaw(4,B11010000); //”r.” matrix.writeDisplay(); delay(del); matrix.writeDigitRaw(0,B01110111); //”A” matrix.writeDigitRaw(1,B00111000); //”l” matrix.writeDigitRaw(3,B11010000); //”r.” matrix.writeDigitRaw(4,B00000000); //” “ matrix.writeDisplay(); delay(del2); matrix.writeDigitRaw(0,B00111000); //”l” matrix.writeDigitRaw(1,B11010000); //”r.” matrix.writeDigitRaw(3,B00000000); //” “ matrix.writeDigitRaw(4,B00111111); //”O” matrix.writeDisplay(); delay(del); matrix.writeDigitRaw(0,B11010000); //”r.” matrix.writeDigitRaw(1,B00000000); //” “ matrix.writeDigitRaw(3,B00111111); //”O” matrix.writeDigitRaw(4,B01110001); //”F” matrix.writeDisplay(); delay(del); matrix.writeDigitRaw(0,B00000000); //” “ matrix.writeDigitRaw(1,B00111111); //”O” matrix.writeDigitRaw(3,B01110001); //”F” matrix.writeDisplay(); delay(del); matrix.writeDigitRaw(0,B00111111); //”O” matrix.writeDigitRaw(1,B01110001); //”F” matrix.writeDigitRaw(4,B00000000); //” “ matrix.writeDisplay(); delay(del2); matrix.writeDigitRaw(0,B01110001); //”F” matrix.writeDigitRaw(3,B00000000); //” “ matrix.writeDisplay(); delay(del); matrix.writeDigitRaw(1,B00000000); //” “ matrix.writeDisplay(); delay(del); matrix.writeDigitRaw(0,B00000000); //” “ matrix.writeDisplay(); delay(del*3); } ///////////////////////////////////////////////////////////////////////////////////////////////////////////////// // Print :] void print_smile(){ matrix.drawColon(true); matrix.writeDigitRaw(0,B00000000); //” “ matrix.writeDigitRaw(1,B00000000); //” “ matrix.writeDigitRaw(3,B00001111); //”]” matrix.writeDigitRaw(4,B00000000); //” “ matrix.writeDisplay(); delay(del*2); } ///////////////////////////////////////////////////////////////////////////////////////////////////////////////// // Print :[ rolling void print_sad(){ matrix.drawColon(true); matrix.writeDigitRaw(0,B00000000); //” “ matrix.writeDigitRaw(1,B00000000); //” “ matrix.writeDigitRaw(3,B00111001); //”[“ matrix.writeDigitRaw(4,B00000000); //” “ matrix.writeDisplay(); delay(del*2); } //Button press beep function void beep(){ digitalWrite(beeper, HIGH); delay(beep_delay); digitalWrite(beeper, LOW); }

Step 7: Alarm Stand and Deactivation Circuit: Contact Rings

Make two 1.5cm diameter rings from the cable shield. You can also make another one – the hook. We will need it later.

Solder a piece of cable on each ring insulating the solder joints with heat shrink tube.

Feed the cables through the Styrofoam leaving the rings lay on top of the Styrofoam.

Read m ore: Buzz Wire Alarm Clock Using Arduino