Project I -12. Nurse Call using 7 Segment Display Based on Arduino

Nurse Call using 7 Segment Display

Generally this tools is look Like A nurse caller at the hospital. how the system works as follows, push button botton as trigger alarm on nurse room, button put in every room patient. Seven segment will displays patient room that replaced by number of buttons on board. In the nurse room there is a push on button (pickup button) to turn off the alarm and continue the queue sequence of patients who pressed the button. In this application there are 2 Arduino UNO, 1 Arduino is used to handle the pressed button, the data is sent serially to the other arduino, then the data is displayed on seven segment.

Hardware Requirement

2 Arduino Uno Board
6 Digit of 7-Segment with Common Anode
17 Push Button
Buzzer
Power supply +5 Volt
Jumper

7-Segment | Source Push Button | Source

Buzzer | Source

Block Diagram

Schematic

--> Arduino 1

--> Arduino 2

7-Segment CA Wiring | Source

Arduino 1 - Arduino 2 Wiring

Arduino 1 - Buttons Wiring

Arduino 2 - 7-Segment Wiring

Arduino 2 - Components Wiring

Source Code --> Arduino 1

#include <SoftwareSerial.h>
SoftwareSerial mySerial(2, 3); // RX, TX
byte in_serial,str;
boolean tb1,tb2,tb3,tb4,tb5,tb6,tb7,tb8,tb9=true;
boolean tb10,tb11,tb12,tb13,tb14,tb15,tb16=true;
String inString="";
char f;
void setup(){
pinMode(4, INPUT);
pinMode(5, INPUT);
pinMode(6, INPUT);
pinMode(7, INPUT);
pinMode(8, INPUT);
pinMode(9, INPUT);
pinMode(10, INPUT);
pinMode(11, INPUT);
pinMode(12, INPUT);
pinMode(13, INPUT);
digitalWrite(4, HIGH);
digitalWrite(5, HIGH);
digitalWrite(6, HIGH);
digitalWrite(7, HIGH);
digitalWrite(8, HIGH);
digitalWrite(9, HIGH);
digitalWrite(10, HIGH);
digitalWrite(11, HIGH);
digitalWrite(12, HIGH);
digitalWrite(13, HIGH);
pinMode(A0,INPUT);
pinMode(A1,INPUT);
pinMode(A2,INPUT);
pinMode(A3,INPUT);
pinMode(A4,INPUT);
pinMode(A5,INPUT);
digitalWrite(A0, HIGH);
digitalWrite(A1, HIGH);
digitalWrite(A2, HIGH);
digitalWrite(A3, HIGH);
digitalWrite(A4, HIGH);
digitalWrite(A5, HIGH);
delay(100);
mySerial.begin(9600);
tb1=true;
tb2=true;
tb3=true;
tb4=true;
tb5=true;
tb6=true;
tb7=true;
tb8=true;
tb9=true;
tb10=true;
tb11=true;
tb12=true;
tb13=true;
tb14=true;
tb15=true;
tb16=true;
Serial.begin(9600);
}
void loop() {
if(digitalRead(4)==LOW && tb1==true){
mySerial.println("A01B01");
tb1=false;
delay(500);
}
if(digitalRead(5)==LOW && tb2==true){
mySerial.println("A01B02");
tb2=false;
delay(500);
}
if(digitalRead(6)==LOW && tb3==true){
mySerial.println("A01B03");
tb3=false;
delay(500);
}
if(digitalRead(7)==LOW && tb4==true){
mySerial.println("A01B04");
tb4=false;
delay(500);
}
if(digitalRead(8)==LOW && tb5==true){
mySerial.println("A01B05");
tb5=false;
delay(500);
}
if(digitalRead(9)==LOW&& tb6==true){
mySerial.println("A02B01");
tb6=false;
delay(500);
}
if(digitalRead(10)==LOW && tb7==true){
mySerial.println("A02B02");
tb7=false;
delay(500);
}
if(digitalRead(11)==LOW && tb8==true){
mySerial.println("A02B03");
tb8=false;
delay(500);
}
if(digitalRead(12)==LOW && tb9==true){
mySerial.println("A02B04");
tb9=false;
delay(500);
}
if(digitalRead(13)==LOW && tb10==true){
mySerial.println("A02B05");
tb10=false;
delay(500);
}
if(digitalRead(A0)==LOW && tb11==true){
mySerial.println("A03B01");
tb11=false;
delay(500);
}
if(digitalRead(A1)==LOW && tb12==true){
mySerial.println("A03B02");
tb12=false;
delay(500);
}
if(digitalRead(A2)==LOW && tb13==true){
mySerial.println("A03B03");
tb13=false;
delay(500);
}
if(digitalRead(A3)==LOW && tb14==true){
mySerial.println("A03B04");
tb14=false;
delay(500);
}
if(digitalRead(A4)==LOW && tb15==true){
mySerial.println("A03B05");
tb15=false;
delay(500);
}
if(digitalRead(A5)==LOW && tb16==true){
mySerial.println("A03B06");
tb16=false;
delay(500);
}
if(mySerial.available()){
getSerial();
if (inString=="tb1=true") tb1=true;
else if (inString=="tb2=true")tb2=true;
else if (inString=="tb3=true")tb3=true;
else if (inString=="tb4=true")tb4=true;
else if (inString=="tb5=true")tb5=true;
else if (inString=="tb6=true")tb6=true;
else if (inString=="tb7=true")tb7=true;
else if (inString=="tb8=true")tb8=true;
else if (inString=="tb9=true")tb9=true;
else if (inString=="tb10=true")tb10=true;
else if (inString=="tb11=true")tb11=true;
else if (inString=="tb12=true")tb12=true;
else if (inString=="tb13=true")tb13=true;
else if (inString=="tb14=true")tb14=true;
else if (inString=="tb15=true")tb15=true;
else if (inString=="tb16=true")tb16=true;
Serial.println(inString);
}
}
//----------------
void getSerial(){
f=1;
inString="";
while(f){
if(mySerial.available()){
str=mySerial.read();
switch (str){
case '\r': break;
case '\n':f=0; break;
default:inString+=(char)str;
}
}
}
}

Source Code --> Arduino 2

#include <EEPROM.h>
#include <SoftwareSerial.h>
SoftwareSerial mySerial(2, 3); // RX, TX
byte in_serial,str;
long lastButton = 0;
long delayAntiBouncing = 50;
byte f_data, addr, addr_tampil, pickUp;
byte bacaRuang, bacaKamar, antrian;
byte lanjut, f_tampilan;
byte simpanRuang, simpanKamar;
char f;
int i, j;
String inString="";
String Stemp="";
byte seven_seg_digits[10][7] = { { 0,0,0,0,0,0,1 }, // = 0
{ 1,0,0,1,1,1,1 }, // = 1
{ 0,0,1,0,0,1,0 }, // = 2
{ 0,0,0,0,1,1,0 }, // = 3
{ 1,0,0,1,1,0,0 }, // = 4
{ 0,1,0,0,1,0,0 }, // = 5
{ 0,1,0,0,0,0,0 }, // = 6
{ 0,0,0,1,1,1,1 }, // = 7
{ 0,0,0,0,0,0,0 }, // = 8
{ 0,0,0,0,1,0,0 }, // = 9
};
void setup(){
pinMode(4, OUTPUT);
pinMode(5, OUTPUT);
pinMode(6, OUTPUT);
pinMode(7, OUTPUT);
pinMode(8, OUTPUT);
pinMode(9, OUTPUT);
pinMode(10, OUTPUT);
pinMode(11, OUTPUT);
pinMode(A0, OUTPUT);
pinMode(A1, OUTPUT);
pinMode(A2, OUTPUT);
pinMode(A3, OUTPUT);
pinMode(A4, OUTPUT);
pinMode(A5, OUTPUT);
pinMode(13, OUTPUT);
digitalWrite(13, LOW);
pinMode(12,INPUT);
digitalWrite(12, HIGH);
mySerial.begin(9600);
}
void loop(){
if(mySerial.available()){
getSerial();
i=inString.indexOf('A');
j=i+3;
Stemp=inString.substring((i+1),j);
simpanRuang=Stemp.toInt();
addr++;
EEPROM.write(addr,simpanRuang);
i=inString.indexOf('B');
j=i+3;
Stemp=inString.substring((i+1),j);
simpanKamar=Stemp.toInt();
addr++;
EEPROM.write(addr,simpanKamar);
f_data++;
}
if (f_data > 0){
if(pickUp==0 && f_tampilan==0){
bacaRuang=EEPROM.read(1);
bacaKamar=EEPROM.read(2);
lanjut++;
f_tampilan=1;
}
else if(pickUp==1){
statusTombol();
lanjut++;
addr_tampil = lanjut*2;
bacaKamar=EEPROM.read(addr_tampil);
addr_tampil = addr_tampil-1;
bacaRuang=EEPROM.read(addr_tampil);
pickUp=0;
f_data--;
}
tampil7Segment();
digitalWrite(13, HIGH);
}
else{
digitalWrite(A0,HIGH); digitalWrite(A1,HIGH);
digitalWrite(A2,HIGH); digitalWrite(A3,HIGH);
digitalWrite(A4,HIGH); digitalWrite(A5,HIGH);
addr=0;
addr_tampil=0;
f_data=0;
pickUp=0;
lanjut=0;
f_tampilan=0;
digitalWrite(13, LOW);
}
if(digitalRead(12)==0){
if ((millis() - lastButton) > delayAntiBouncing){
if(f_data > 0) {
pickUp=1;
}
}
lastButton = millis();
}
}
void tampil7Segment(){
digitalWrite(A0,LOW); digitalWrite(A1,HIGH);
digitalWrite(A2,HIGH); digitalWrite(A3,HIGH);
digitalWrite(A4,HIGH); digitalWrite(A5,HIGH);
sevenSegWrite(bacaRuang / 10);
delay(5);
digitalWrite(A0,HIGH); digitalWrite(A1,LOW);
digitalWrite(A2,HIGH); digitalWrite(A3,HIGH);
digitalWrite(A4,HIGH); digitalWrite(A5,HIGH);
sevenSegWrite(bacaRuang % 10);
delay(5);
digitalWrite(A0,HIGH); digitalWrite(A1,HIGH);
digitalWrite(A2,LOW); digitalWrite(A3,HIGH);
digitalWrite(A4,HIGH); digitalWrite(A5,HIGH);
sevenSegWrite(bacaKamar / 10);
delay(5);
digitalWrite(A0,HIGH); digitalWrite(A1,HIGH);
digitalWrite(A2,HIGH); digitalWrite(A3,LOW);
digitalWrite(A4,HIGH); digitalWrite(A5,HIGH);
sevenSegWrite(bacaKamar % 10);
delay(5);
digitalWrite(A0,HIGH); digitalWrite(A1,HIGH);
digitalWrite(A2,HIGH); digitalWrite(A3,HIGH);
digitalWrite(A4,LOW); digitalWrite(A5,HIGH);
sevenSegWrite(f_data / 10);
delay(5);
digitalWrite(A0,HIGH); digitalWrite(A1,HIGH);
digitalWrite(A2,HIGH); digitalWrite(A3,HIGH);
digitalWrite(A4,HIGH); digitalWrite(A5,LOW);
sevenSegWrite(f_data % 10);
delay(5);
}
void sevenSegWrite(byte segment){
byte pin = 4;
for (byte segCount = 0; segCount < 7; ++segCount) {
digitalWrite(pin, seven_seg_digits[segment][segCount]);
++pin;
}
}
void statusTombol(){
if (bacaRuang==1 && bacaKamar==1){
mySerial.println("tb1=true");
}
else if (bacaRuang==1 && bacaKamar==2){
mySerial.println("tb2=true");
}
else if (bacaRuang==1 && bacaKamar==3){
mySerial.println("tb3=true");
}
else if (bacaRuang==1 && bacaKamar==4){
mySerial.println("tb4=true");
}
else if (bacaRuang==1 && bacaKamar==5){
mySerial.println("tb5=true");
}
else if (bacaRuang==2 && bacaKamar==1){
mySerial.println("tb6=true");
}
else if (bacaRuang==2 && bacaKamar==2){
mySerial.println("tb7=true");
}
else if (bacaRuang==2 && bacaKamar==3){
mySerial.println("tb8=true");
}
else if (bacaRuang==2 && bacaKamar==4){
mySerial.println("tb9=true");
}
else if (bacaRuang==2 && bacaKamar==5){
mySerial.println("tb10=true");
}
else if (bacaRuang==3 && bacaKamar==1){
mySerial.println("tb11=true");
}
else if (bacaRuang==3 && bacaKamar==2){
mySerial.println("tb12=true");
}
else if (bacaRuang==3 && bacaKamar==3){
mySerial.println("tb13=true");
}
else if (bacaRuang==3 && bacaKamar==4){
mySerial.println("tb14=true");
}
else if (bacaRuang==3 && bacaKamar==5){
mySerial.println("tb15=true");
}
else if (bacaRuang==3 && bacaKamar==6){
mySerial.println("tb16=true");
}
}
void getSerial(){
f=1;
inString="";
while(f){
if(mySerial.available()){
str=mySerial.read();
switch (str){
case '\r': break;
case '\n':f=0; break;
default:inString+=(char)str;
}
}
}
}