//-----------------------
//Stopwatch
//-----------------------
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
//---------------------------------
LiquidCrystal_I2C lcd(0x27, 20, 4);
//---------------------------------
String milliSec; boolean debounce1;
unsigned long btn1PressStart=0;
unsigned long Sec, Min, TenSec, HunSec, startMillis;
//
float minbattlevel = 3.3; // defining minimum voltage shown on display:
float maxbattlevel = 4.0; // defining maximum voltage shown on display:
//
//============================================================
// OPTION 1 - for text on line 1
byte x10[8] = {0x01, 0x03, 0x03, 0x07, 0x07, 0x0F, 0x0F, 0x1F};
byte x11[8] = {0x10, 0x18, 0x18, 0x1C, 0x1C, 0x1E, 0x1E, 0x1F};
byte x12[8] = {0x1F, 0x0F, 0x0F, 0x07, 0x07, 0x03, 0x03, 0x01};
byte x13[8] = {0x1F, 0x1E, 0x1E, 0x1C, 0x1C, 0x18, 0x18, 0x10};
byte x14[8] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1F, 0x1F};
byte x15[8] = { 0x1F, 0x1F, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
byte x16[8] = {0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F};
byte x17[8] = {0x00,0x00,0x00,0x00,0x00,0x0E,0x0E,0x0E};
byte row = 0,col = 0;
const byte ledPin = 13;
const byte buttonPin = 2;
// Boolean to represent toggle state
volatile bool toggleState = false;
void checkSwitch() {
// Check status of switch
if(millis()-btn1PressStart > 2000) debounce1 = true;
if(digitalRead(buttonPin) == LOW && debounce1 == true)
{
btn1PressStart = millis();
debounce1 = false;
// Switch was pressed
// Change state of toggle
toggleState = !toggleState;
digitalWrite(ledPin, toggleState);
}
}
//*****************************************************************************************//
// Initial Setup
//*****************************************************************************************//
void setup() {
// Set switch pin as INPUT with pullup
pinMode(buttonPin, INPUT_PULLUP);
// Attach Interrupt to Interrupt Service Routine
attachInterrupt(digitalPinToInterrupt(buttonPin),checkSwitch, FALLING);
// lcd.init(); THIS LINE CAUSES SIGNIFICANT REDUCTION IN RESOLUTION
lcd.backlight();
// lcd.clear(); THIS LINE DOESNT SEEM TO CAUSE A REDUCTION IN RESOLUTION BUT IS ALSO NOT NECESSARY
lcd.begin(20, 4); // setup LCD for 20 columns and 4 rows
lcd.createChar(0, x10); // #lower-rh triangle - byte 0
lcd.createChar(1, x11); // #lower-lh triangle - byte 1
lcd.createChar(2, x12); // #upper-rh triangle - byte 2
lcd.createChar(3, x13); // #upper-lh triangle - byte 3
lcd.createChar(4, x14); // #lower horiz bar - byte 4
lcd.createChar(5, x15); // #upper horiz bar - byte 5
lcd.createChar(6, x16); // #solid block - byte 6
lcd.createChar(7, x17); // #decimal - byte 7
row = 0;
doNumber( 0,row,3); // 2 on row 5
doNumber(11,row,6); // colon
doNumber( 0,row,7);
doNumber( 0,row,10);
doNumber(12,row,13); // decimal
doNumber( 0,row,14);
doNumber( 0,row,17);
Serial.begin(9600); // initialize serial communication at 9600 bits per second:
}
//*****************************************************************************************//
// MAIN LOOP
//*****************************************************************************************//
//============================================================
void loop()
{
int sensorValue = analogRead(A1);
float voltage = (sensorValue * (5 / 1023.0));
Serial.println(voltage);
if(voltage < minbattlevel)
{
doNumber((20),row,0);
}
if(minbattlevel < voltage && maxbattlevel > voltage)
{
doNumber( ((voltage-minbattlevel) * (8/(maxbattlevel-minbattlevel))) +20 ,row,0);
}
if(voltage > maxbattlevel)
{
doNumber((28),row,0);
}
if(toggleState == true)
{
//toggleState = true;
stopWatch();
}
}
//=============================================================
void stopWatch()
{
//lcd.clear();
startMillis = millis();
while(1)
{
if(toggleState == false)
{
btn1PressStart = millis();
break;
}
//-------------------------------------------------
HunSec = ((millis()-startMillis)%100)/10;
TenSec = ((millis()-startMillis)%1000)/100;
Sec = ((millis()-startMillis)/1000)%60;
Min = ((millis()-startMillis)/60000)%60;
//-------------------------------------------------
if(Min < 10)
{
doNumber( Min,row,3);
}
else doNumber( Min%10,row,3);
doNumber(11,row,6);
if(Sec < 10)
{
doNumber( 0,row,7); doNumber( Sec,row,10);
}
else doNumber(Sec/10,row,7); doNumber( Sec%10,row,10);
doNumber(12,row,13);
doNumber(TenSec,row,14); doNumber(HunSec,row,17);
int sensorValue = analogRead(A1);
float voltage = (sensorValue * (5 / 1023.0));
Serial.println(voltage);
if(voltage < minbattlevel)
{
doNumber((20),row,0);
}
if(minbattlevel < voltage && maxbattlevel > voltage)
{
doNumber( ((voltage-minbattlevel) * (8/(maxbattlevel-minbattlevel))) +20 ,row,0);
}
if(voltage > maxbattlevel)
{
doNumber((28),row,0);
}
}
}
//*****************************************************************************************//
// doNumber: routine to position number 'num' starting top left at row 'r', column 'c'
void doNumber(byte num, byte r, byte c) {
lcd.setCursor(c,r);
switch(num) {
case 0: lcd.write(byte(0)); lcd.write(byte(6)); lcd.write(byte(1));
lcd.setCursor(c,r+1); lcd.write(byte(6)); lcd.print(" "); lcd.write(byte(6));
lcd.setCursor(c,r+2); lcd.write(byte(6)); lcd.print(" "); lcd.write(byte(6));
lcd.setCursor(c,r+3); lcd.write(byte(2)); lcd.write(byte(6)); lcd.write(byte(3)); break;
case 1: lcd.write(byte(0)); lcd.write(byte(6)); lcd.print(" ");
lcd.setCursor(c,r+1); lcd.print(" "); lcd.write(byte(6)); lcd.print(" ");
lcd.setCursor(c,r+2); lcd.print(" "); lcd.write(byte(6)); lcd.print(" ");
lcd.setCursor(c,r+3); lcd.print(" "); lcd.write(byte(6)); lcd.print(" "); break;
case 2: lcd.write(byte(0)); lcd.write(byte(6)); lcd.write(byte(1));
lcd.setCursor(c,r+1); lcd.write(byte(5)); lcd.write(byte(0)); lcd.write(byte(3));
lcd.setCursor(c,r+2); lcd.write(byte(0)); lcd.write(byte(3)); lcd.print(" ");
lcd.setCursor(c,r+3); lcd.write(byte(6)); lcd.write(byte(6)); lcd.write(byte(6)); break;
case 3: lcd.write(byte(0)); lcd.write(byte(6)); lcd.write(byte(1));
lcd.setCursor(c,r+1); lcd.write(byte(5)); lcd.write(byte(4)); lcd.write(byte(6));
lcd.setCursor(c,r+2); lcd.write(byte(4)); lcd.write(byte(5)); lcd.write(byte(6));
lcd.setCursor(c,r+3); lcd.write(byte(2)); lcd.write(byte(6)); lcd.write(byte(3)); break;
case 4: lcd.write(byte(6)); lcd.print(" "); lcd.write(byte(6));
lcd.setCursor(c,r+1); lcd.write(byte(6)); lcd.write(byte(4)); lcd.write(byte(6));
lcd.setCursor(c,r+2); lcd.print(" "); lcd.write(byte(5)); lcd.write(byte(6));
lcd.setCursor(c,r+3); lcd.print(" "); lcd.print(" "); lcd.write(byte(6)); break;
case 5: lcd.write(byte(6)); lcd.write(byte(6)); lcd.write(byte(6));
lcd.setCursor(c,r+1); lcd.write(byte(6)); lcd.write(byte(4)); lcd.write(byte(4));
lcd.setCursor(c,r+2); lcd.write(byte(4)); lcd.write(byte(5)); lcd.write(byte(6));
lcd.setCursor(c,r+3); lcd.write(byte(2)); lcd.write(byte(6)); lcd.write(byte(3)); break;
case 6: lcd.write(byte(0)); lcd.write(byte(6)); lcd.write(byte(1));
lcd.setCursor(c,r+1); lcd.write(byte(6)); lcd.write(byte(4)); lcd.print(" ");
lcd.setCursor(c,r+2); lcd.write(byte(6)); lcd.write(byte(5)); lcd.write(byte(6));
lcd.setCursor(c,r+3); lcd.write(byte(2)); lcd.write(byte(6)); lcd.write(byte(3)); break;
case 7: lcd.write(byte(6)); lcd.write(byte(6)); lcd.write(byte(6));
lcd.setCursor(c,r+1); lcd.print(" "); lcd.write(byte(0)); lcd.write(byte(3));
lcd.setCursor(c,r+2); lcd.print(" "); lcd.write(byte(6)); lcd.print(" ");
lcd.setCursor(c,r+3); lcd.print(" "); lcd.write(byte(6)); lcd.print(" "); break;
case 8: lcd.write(byte(0)); lcd.write(byte(6)); lcd.write(byte(1));
lcd.setCursor(c,r+1); lcd.write(byte(2)); lcd.write(byte(4)); lcd.write(byte(3));
lcd.setCursor(c,r+2); lcd.write(byte(0)); lcd.write(byte(5)); lcd.write(byte(1));
lcd.setCursor(c,r+3); lcd.write(byte(2)); lcd.write(byte(6)); lcd.write(byte(3)); break;
case 9: lcd.write(byte(0)); lcd.write(byte(6)); lcd.write(byte(1));
lcd.setCursor(c,r+1); lcd.write(byte(6)); lcd.write(byte(4)); lcd.write(byte(6));
lcd.setCursor(c,r+2); lcd.print(" "); lcd.write(byte(5)); lcd.write(byte(6));
lcd.setCursor(c,r+3); lcd.write(byte(2)); lcd.write(byte(6)); lcd.write(byte(3)); break;
case 11: lcd.setCursor(c,r+1); lcd.write(byte(7)); lcd.setCursor(c,r+2); lcd.write(byte(7)); break;
case 12: lcd.setCursor(c,r+3); lcd.write(byte(7)); break;
case 20: lcd.print(" "); lcd.print(" ");
lcd.setCursor(c,r+1); lcd.print(" "); lcd.print(" ");
lcd.setCursor(c,r+2); lcd.print(" "); lcd.print(" ");
lcd.setCursor(c,r+3); lcd.print(" "); lcd.print(" "); break; // battery level 0/8
case 21: lcd.print(" "); lcd.print(" ");
lcd.setCursor(c,r+1); lcd.print(" "); lcd.print(" ");
lcd.setCursor(c,r+2); lcd.print(" "); lcd.print(" ");
lcd.setCursor(c,r+3); lcd.write(byte(4)); lcd.write(byte(4)); break; // battery level 1/8
case 22: lcd.print(" "); lcd.print(" ");
lcd.setCursor(c,r+1); lcd.print(" "); lcd.print(" ");
lcd.setCursor(c,r+2); lcd.print(" "); lcd.print(" ");
lcd.setCursor(c,r+3); lcd.write(byte(6)); lcd.write(byte(6)); break; // battery level 2/8
case 23: lcd.print(" "); lcd.print(" ");
lcd.setCursor(c,r+1); lcd.print(" "); lcd.print(" ");
lcd.setCursor(c,r+2); lcd.write(byte(4)); lcd.write(byte(4));
lcd.setCursor(c,r+3); lcd.write(byte(6)); lcd.write(byte(6)); break; // battery level 3/8
case 24: lcd.print(" "); lcd.print(" ");
lcd.setCursor(c,r+1); lcd.print(" "); lcd.print(" ");
lcd.setCursor(c,r+2); lcd.write(byte(6)); lcd.write(byte(6));
lcd.setCursor(c,r+3); lcd.write(byte(6)); lcd.write(byte(6)); break; // battery level 4/8
case 25: lcd.print(" "); lcd.print(" ");
lcd.setCursor(c,r+1); lcd.write(byte(4)); lcd.write(byte(4));
lcd.setCursor(c,r+2); lcd.write(byte(6)); lcd.write(byte(6));
lcd.setCursor(c,r+3); lcd.write(byte(6)); lcd.write(byte(6)); break; // battery level 5/8
case 26: lcd.print(" "); lcd.print(" ");
lcd.setCursor(c,r+1); lcd.write(byte(6)); lcd.write(byte(6));
lcd.setCursor(c,r+2); lcd.write(byte(6)); lcd.write(byte(6));
lcd.setCursor(c,r+3); lcd.write(byte(6)); lcd.write(byte(6)); break; // battery level 6/8
case 27: lcd.write(byte(4)); lcd.write(byte(4));
lcd.setCursor(c,r+1); lcd.write(byte(6)); lcd.write(byte(6));
lcd.setCursor(c,r+2); lcd.write(byte(6)); lcd.write(byte(6));
lcd.setCursor(c,r+3); lcd.write(byte(6)); lcd.write(byte(6)); break; // battery level 7/8
case 28: lcd.write(byte(6)); lcd.write(byte(6));
lcd.setCursor(c,r+1); lcd.write(byte(6)); lcd.write(byte(6));
lcd.setCursor(c,r+2); lcd.write(byte(6)); lcd.write(byte(6));
lcd.setCursor(c,r+3); lcd.write(byte(6)); lcd.write(byte(6)); break; // battery level 8/8
}
}uno:A5.2
uno:A4.2
uno:AREF
uno:GND.1
uno:13
uno:12
uno:11
uno:10
uno:9
uno:8
uno:7
uno:6
uno:5
uno:4
uno:3
uno:2
uno:1
uno:0
uno:IOREF
uno:RESET
uno:3.3V
uno:5V
uno:GND.2
uno:GND.3
uno:VIN
uno:A0
uno:A1
uno:A2
uno:A3
uno:A4
uno:A5
LCD1:GND
LCD1:VCC
LCD1:SDA
LCD1:SCL
btn2:1.l
btn2:2.l
btn2:1.r
btn2:2.r
pot1:GND
pot1:SIG
pot1:VCC