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- //currently 8 leds controllable
- #define LED1 A0
- #define LED2 A1
- #define LED3 A2
- #define LED4 A3
- #define LED5 A4
- #define LED6 A5
- #define LED7 7 //A6, and A7 are ADC only. No GPIO.
- #define LED8 8
-
- #define Sensor A6
- #define SPKR 5
-
- uint16_t gasVAL;
-
- void setup() {
- // put your setup code here, to run once:
- Serial.begin(9600);
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- pinMode(LED1, OUTPUT);
- pinMode(LED2, OUTPUT);
- pinMode(LED3, OUTPUT);
- pinMode(LED4, OUTPUT);
- pinMode(LED5, OUTPUT);
- pinMode(LED6, OUTPUT);
- pinMode(LED7, OUTPUT);
- pinMode(LED8, OUTPUT);
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- pinMode(SPKR, OUTPUT);
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- Startup();
-
- }
-
- void loop() {
- // put your main code here, to run repeatedly:
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- gasVAL = analogRead(Sensor);
- Serial.println(gasVAL);
- lightLED(gasVAL);
- delay(30);
-
- }
-
- void Startup (void){
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- Serial.println("Flammable Gas Sensor");
- Serial.println("Begin");
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- int yy = 0;
- for(yy=200;yy<1200;yy+=150){
- tone(SPKR,yy,100);
- delay(100);
- }
- /*
- for(yy=2000;yy>100;yy-=100){
- tone(SPKR,yy,100);
- delay(50);
- }*/
-
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- digitalWrite(LED1,HIGH);
- digitalWrite(LED2,HIGH);
- digitalWrite(LED3,HIGH);
- digitalWrite(LED4,HIGH);
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- delay(500);
- digitalWrite(LED1,LOW);
- digitalWrite(LED2,LOW);
- digitalWrite(LED3,LOW);
- digitalWrite(LED4,LOW);
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- digitalWrite(LED5,HIGH);
- digitalWrite(LED6,HIGH);
- digitalWrite(LED7,HIGH);
- digitalWrite(LED8,HIGH);
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- delay(500);
- digitalWrite(LED5,LOW);
- digitalWrite(LED6,LOW);
- digitalWrite(LED7,LOW);
- digitalWrite(LED8,LOW);
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-
-
- }
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- void lightLED( uint16_t reading){
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- if (reading >= 750){
- digitalWrite(LED1,HIGH);
- digitalWrite(LED2,HIGH);
- digitalWrite(LED3,HIGH);
- digitalWrite(LED4,HIGH);
- digitalWrite(LED5,HIGH);
- digitalWrite(LED6,HIGH);
- digitalWrite(LED7,HIGH);
- digitalWrite(LED8,HIGH);
- tone(SPKR,750,100);
- }
- else if (reading >= 700){
- digitalWrite(LED1,HIGH);
- digitalWrite(LED2,HIGH);
- digitalWrite(LED3,HIGH);
- digitalWrite(LED4,HIGH);
- digitalWrite(LED5,HIGH);
- digitalWrite(LED6,HIGH);
- digitalWrite(LED7,HIGH);
- digitalWrite(LED8,LOW);
- tone(SPKR,700,100);
- }
- else if (reading >= 650){
- digitalWrite(LED1,HIGH);
- digitalWrite(LED2,HIGH);
- digitalWrite(LED3,HIGH);
- digitalWrite(LED4,HIGH);
- digitalWrite(LED5,HIGH);
- digitalWrite(LED6,HIGH);
- digitalWrite(LED7,LOW);
- digitalWrite(LED8,LOW);
- tone(SPKR,650,100);
- }
- else if (reading >= 600){
- digitalWrite(LED1,HIGH);
- digitalWrite(LED2,HIGH);
- digitalWrite(LED3,HIGH);
- digitalWrite(LED4,HIGH);
- digitalWrite(LED5,HIGH);
- digitalWrite(LED6,LOW);
- digitalWrite(LED7,LOW);
- digitalWrite(LED8,LOW);
- tone(SPKR,600,100);
- }
- else if (reading >= 550){
- digitalWrite(LED1,HIGH);
- digitalWrite(LED2,HIGH);
- digitalWrite(LED3,HIGH);
- digitalWrite(LED4,HIGH);
- digitalWrite(LED5,LOW);
- digitalWrite(LED6,LOW);
- digitalWrite(LED7,LOW);
- digitalWrite(LED8,LOW);
- tone(SPKR,550,100);
- }
- else if (reading >= 500){
- digitalWrite(LED1,HIGH);
- digitalWrite(LED2,HIGH);
- digitalWrite(LED3,HIGH);
- digitalWrite(LED4,LOW);
- digitalWrite(LED5,LOW);
- digitalWrite(LED6,LOW);
- digitalWrite(LED7,LOW);
- digitalWrite(LED8,LOW);
- tone(SPKR,500,100);
- }
- else if (reading >= 410){
- digitalWrite(LED1,HIGH);
- digitalWrite(LED2,HIGH);
- digitalWrite(LED3,LOW);
- digitalWrite(LED4,LOW);
- digitalWrite(LED5,LOW);
- digitalWrite(LED6,LOW);
- digitalWrite(LED7,LOW);
- digitalWrite(LED8,LOW);
- tone(SPKR,410,100);
- }
- else if (reading >= 300){
- digitalWrite(LED1,HIGH);
- digitalWrite(LED2,LOW);
- digitalWrite(LED3,LOW);
- digitalWrite(LED4,LOW);
- digitalWrite(LED5,LOW);
- digitalWrite(LED6,LOW);
- digitalWrite(LED7,LOW);
- digitalWrite(LED8,LOW);
- }
- else if (reading >= 0){
- digitalWrite(LED1,LOW);
- digitalWrite(LED2,LOW);
- digitalWrite(LED3,LOW);
- digitalWrite(LED4,LOW);
- digitalWrite(LED5,LOW);
- digitalWrite(LED6,LOW);
- digitalWrite(LED7,LOW);
- digitalWrite(LED8,LOW);
- }
- /*else {
- digitalWrite(LED1,HIGH);
- digitalWrite(LED2,LOW);
- digitalWrite(LED3,HIGH);
- digitalWrite(LED4,LOW);
- digitalWrite(LED5,HIGH);
- digitalWrite(LED6,LOW);
- digitalWrite(LED7,HIGH);
- digitalWrite(LED8,LOW);
- }*/
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-
-
- }
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