KY-031 Knock Impact Sensor Module

KY-031 Knock Impact Sensor Module

KY-031 Knock Sensor PinOuts

KY-031 Knock Sensor Module Schematic

KY-031 Connection to the Arduino

Arduino Sketch
int knockPin = 10; // Use Pin 10 as our Input
int knockLED = 13;
int knockVal = HIGH; // This is where we record our shock measurement
boolean bAlarm = false;unsigned long lastKnockTime; // Record the time that we measured a shock

int knockAlarmTime = 500; // Number of milli seconds to keep the knock alarm high

void setup ()
{
  Serial.begin(9600); 
  pinMode (knockPin, INPUT); // input from the KY-031
    pinMode (knockLED, OUTPUT);
}

void loop ()
{
  knockVal = digitalRead (knockPin); // read KY-031 Value

  if (knockVal == LOW) // If we see a knock
  {

    lastKnockTime = millis(); // record the time of the shock
    // The following is so you don't scroll on the output screen
    if (!bAlarm)
    {
      Serial.println("KNOCK, KNOCK");
      digitalWrite (knockLED, HIGH);
      bAlarm = true;
    }
  }
  else
  {
    if( (millis()-lastKnockTime) > knockAlarmTime  &&  bAlarm)
    {
      Serial.println("no knocks");
      digitalWrite (knockLED, LOW);
      bAlarm = false;
    }
  }
}

Sumber

Keyes KY-031 Arduino Knock Impact Sensor: Manual and Tutorial

Where to Buy
KY-031 Percussion Knock Impact Sensor Module

KY-031 Percussion Knock Impact Sensor Module

HC-SR501 PIR (Passive InfraRed) Motion Sensor Module

HC-SR501 PinOuts and Controls

Pin or Control	Function
Time Delay Adjust	Sets how long the output remains high after detecting motion.... Anywhere from 5 seconds to 5 minutes.
Sensitivity Adjust	Sets the detection range.... from 3 meters to 7 meters
Trigger Selection Jumper	Set for single or repeatable triggers.
Ground pin	Ground input
Output Pin	Low when no motion is detected.. High when motion is detected. High is 3.3V
Power Pin	5 to 20 VDC Supply input

Device Area of Detection

Time Delay Adjustment

HC-SR501 Connection to Arduino

Arduino Sketch
int ledPin = 13;  // LED on Pin 13 of Arduino
int pirPin = 7; // Input for HC-SR501
int pirValue; // Place to store read PIR Value
void setup()
{
  pinMode(ledPin, OUTPUT);
  pinMode(pirPin, INPUT);

  digitalWrite(ledPin, LOW);
}
void loop()
{
  pirValue = digitalRead(pirPin);
  digitalWrite(ledPin, pirValue);
}

Sumber
Arduino HC-SR501 Motion Sensor Tutorial

Where to buy
HC-SR501 PIR Motion Sensor Module

HC-SR501 PIR Motion Sensor Module

KY-040 Rotary Encoder Module

KY-040 Rotary Encoder

KY-040 Rotary Encoder PinOut

Keyes Rotary Encoder Schematic

KY-040 Evaluation Circuit

KY-04 Connection to the Arduino

Arduino Sketch

int pinA = 3;  // Connected to CLK on KY-040

int pinB = 4;  // Connected to DT on KY-040
int encoderPosCount = 0;
int pinALast; 
int aVal;
boolean bCW;
void setup()

{
  pinMode (pinA,INPUT);
  pinMode (pinB,INPUT);
  /* Read Pin A
  Whatever state it's in will reflect the last position   
  */
  pinALast = digitalRead(pinA);
  Serial.begin (9600);
}
void loop()

{
  aVal = digitalRead(pinA);
  if (aVal != pinALast)

  {

    // Means the knob is rotating
    // if the knob is rotating, we need to determine direction
    // We do that by reading pin B.
    if (digitalRead(pinB) != aVal)

    { 

      // Means pin A Changed first - We're Rotating Clockwise
      encoderPosCount ++;
      bCW = true;
    }

    else

    {

      // Otherwise B changed first and we're moving CCW
      bCW = false;
      encoderPosCount--;
    }
    Serial.print ("Rotated: ");
    if (bCW)

    {
      Serial.println ("clockwise");
    }

    else

    {
      Serial.println("counterclockwise");
    }
    Serial.print("Encoder Position: ");
    Serial.println(encoderPosCount);
  }
  pinALast = aVal;

}

Sumber
Keyes KY-040 Arduino Rotary Encoder User Manual

Where to buy
KY-040 Rotary Encoder Module

KY-040 Rotary Encoder Module

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