Lasergesteuerte Mikrosekundenstoppuhr

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1

Hier der Link zum Experiment der genauen Zeitmessung:

2

Und was soll uns dieses Posting sagen?

Gruß Tommy

3

Ich tippe auf ein Suchspiel: Wo ist der Arduino versteckt ?

4

Oder einfacher: Spam

Gruß Tommy

5

Oder falsches Forum erwischt?

6

Hallo,
Thema ist zwar OT allerdings fand ich es ganz gut mal wieder in die Physik dazu einzusteigen.

Gruß Heinz

1 Like
7

Das ist ja auch ok....aber dann muß der TO auch ein paar Informationen hier zu im Forum schreiben und das nicht einfach nur so reinkippen.

8

Nicht so genau, aber preiswert...

// Using interrupts - detect FALLING

volatile bool buttonPressed2, buttonPressed3; // "volatile" inside interrupt service routeine (ISR)

int buttonPin2 = 2; // INT0
int buttonPin3 = 3; // INT1
int ledPin4 = 4; // GRN LED
int ledPin5 = 5; // RED LED

unsigned long startTime, stopTime;
bool firstRead2 = 1, firstRead3 = 1;

void setup() {
  Serial.begin(115200); // start serial monitor

  pinMode(buttonPin2, INPUT_PULLUP);
  pinMode(buttonPin3, INPUT_PULLUP);
  pinMode(ledPin4, OUTPUT);
  pinMode(ledPin5, OUTPUT);

  attachInterrupt(digitalPinToInterrupt(buttonPin2), buttonISR2, FALLING); // PIN#, ISR, TRIGGER
  attachInterrupt(digitalPinToInterrupt(buttonPin3), buttonISR3, FALLING);
}

void loop() {
  checkButton2();
  checkButton3();
}

int buttonISR2() {
  noInterrupts(); // disable interrupts in ISR
  buttonPressed2 = true; // set flag
  interrupts(); // enable interrupts
}

int buttonISR3() {
  noInterrupts();
  buttonPressed3 = true;
  interrupts();
}

void checkButton2() {
  if (buttonPressed2 && firstRead2) {
    startTime = micros();
    firstRead2 = 0;
    digitalWrite(ledPin4, HIGH);
  }
}

void checkButton3() {
  if (buttonPressed3 && firstRead3) {
    stopTime = micros();
    firstRead3 = 0;
    digitalWrite(ledPin5, HIGH);
    Serial.print("Start: ");
    Serial.println(startTime);
    Serial.print(" Stop: ");
    Serial.println(stopTime);
    Serial.print("Split: ");
    Serial.println(stopTime - startTime);
    delay(500);
    digitalWrite(ledPin4, LOW);
    digitalWrite(ledPin5, LOW);
    Serial.println("Press RESET button.");
  }
}
diagram.json for wokwi.com 
{
  "version": 1,
  "author": "Anonymous maker",
  "editor": "wokwi",
  "parts": [
    { "type": "wokwi-arduino-nano", "id": "nano", "top": 4.8, "left": -0.5, "attrs": {} },
    {
      "type": "wokwi-led",
      "id": "led1",
      "top": -58.8,
      "left": 49.4,
      "rotate": 270,
      "attrs": { "color": "red", "flip": "1" }
    },
    {
      "type": "wokwi-pushbutton",
      "id": "btn1",
      "top": -51.4,
      "left": 134.4,
      "attrs": { "color": "red" }
    },
    {
      "type": "wokwi-led",
      "id": "led2",
      "top": -106.8,
      "left": 49.4,
      "rotate": 270,
      "attrs": { "color": "green", "flip": "1" }
    },
    {
      "type": "wokwi-pushbutton",
      "id": "btn2",
      "top": -99.4,
      "left": 134.4,
      "attrs": { "color": "green" }
    },
    {
      "type": "wokwi-text",
      "id": "legendservo1",
      "top": -96,
      "left": 201.6,
      "attrs": { "text": "START" }
    },
    {
      "type": "wokwi-text",
      "id": "legendservo2",
      "top": -48,
      "left": 201.6,
      "attrs": { "text": "STOP" }
    }
  ],
  "connections": [
    [ "nano:GND.2", "led1:C", "black", [ "v0" ] ],
    [ "nano:GND.2", "btn1:1.l", "black", [ "v0" ] ],
    [ "nano:GND.2", "led2:C", "black", [ "v0" ] ],
    [ "nano:GND.2", "btn2:1.l", "black", [ "v0" ] ],
    [ "nano:5", "led1:A", "green", [ "v0" ] ],
    [ "nano:4", "led2:A", "green", [ "v0" ] ],
    [ "nano:2", "btn2:2.l", "green", [ "v0" ] ],
    [ "nano:3", "btn1:2.l", "green", [ "v0" ] ]
  ],
  "dependencies": {}
}
9

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