Testing the PIR module

For now, let's test the PIR module to check that it is working. In order to achieve this you will need:

  • An ESP8266 module (NodeMCU, WeMos, or an other board)
  • A PIR module
  • A Breadboard
  • Wires

For the software part use the following sketch:

  • Define the PIR as it will be connected to the D7 pin, set the pirState to LOW assuming that the PIR is OFF, and set the current state to 0:
#define PIN_PIR  D7              
int pirState = LOW;              
int current_value = 0;                     
  • During setup we will declare the D7 pin where the PIR is connected to an input pin:
void setup() { 
  pinMode(PIN_PIR, INPUT);      
  Serial.begin(115200); 
} 

Now continually monitor the  ...

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