Won't do task 2 unless task 1 is valid

Projects General Guidance
1 

#define RECEIVER1 2
#define RECEIVER2 6 //
#define BUZZER1 8 // 
#define BUZZER2 9


void setup() {
  Serial.begin(9600);
  Serial.println("TEST TEST");
  pinMode(RECEIVER1, INPUT);//define detect input pin
  pinMode(RECEIVER2, INPUT);
  pinMode(BUZZER1, OUTPUT);//define ACTION output pin
  pinMode(BUZZER2, OUTPUT);



}

void loop() {
     

  int detected = digitalRead(RECEIVER1);// read Laser sensor
 
  if( detected == HIGH)
  {
    digitalWrite(BUZZER1,HIGH);// set the buzzer ON
    Serial.println("NO LASER 1");

  }else{
    digitalWrite(BUZZER1,LOW); // Set the buzzer OFF
    Serial.println("LASER DETECTED 1");
     

  
int detected = digitalRead(RECEIVER2);

  if( detected == HIGH)
  {
    digitalWrite(BUZZER2,HIGH);// set the buzzer ON
    Serial.println("NO LASER 2");

  }else{
    digitalWrite(BUZZER2,LOW); // Set the buzzer OFF
    Serial.println("LASER DETECTED 2");
     
  }
  }
  delay(200);
}

hi, I'm working on my 1st Arduino project, and I have 10 pairs of KY-008 Laser Transmitter + Laser Receiver Sensor Modules. I have written the code, but it doesn't work as intended. Arduino won't check if the 2nd receiver is a "hit", unless the 1st receiver is a "hit." So, basically, it won't go to and check the value for receiver 2, unless the receiver 1 is exposed to the light from the transmitter.

and the 2nd question - is there any way to tell which transmitter is hitting the receive or not. I can obviously number number the receivers but how can I know which transmitter is hitting let's say receiver #1 ?

Thanks in advance, sorry if my question is super basic. I'm just starting (by the way it's an Arduino Uno R3 original that I'm using).

2

Please follow the advice given in the link below when posting code, in particular the section entitled 'Posting code and common code problems'

Use code tags (the < CODE/ > icon above the compose window) to make it easier to read and copy for examination

https://forum.arduino.cc/t/how-to-get-the-best-out-of-this-forum

1 Like
4

wow, Thank you @Delta_G it solved my issue. Appreciate it much

5

ok, sure @UKHeliBob, didn't know there was such a thing

6

any ideas regarding the 2nd part of the question - is there any way to tell which transmitter is "hitting" the receiver?

7

If course not. You didn't read the forum guide before you posted. Go read it now, please. Then fix post #1 so we know you understand.

Thinking of copying & pasting your code 8 more times for the other receivers? Don't! Copy/pasting code is a sin. We can help you avoid it.

Yes, switch the transmitters on one at a time. If any receiver detects it, you know which transmitter it was from.

2 Likes
8

I made the change, it looks right now?

9

so, if I shouldn't just copy-paste for the other 8, what should I do instead?

12

Use arrays:

const byte receivers = 2;
const byte receiverPin[receivers] = {2, 6};
const byte buzzerPin[receivers] = {8, 9};

void setup() {
  Serial.begin(115200);
  Serial.println("TEST TEST");
  for (byte p=0; p<receivers; p++) {
    pinMode(receiverPin[r], INPUT);  //define detect input pin
    pinMode(buzzerPin[r], OUTPUT);  //define ACTION output pin
  }
}
13

This topic was automatically closed 180 days after the last reply. New replies are no longer allowed.