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Human Detection using a PIR Sensor: Use a PIR (Passive Infrared) sensor to classify if a human is-present or absent.

Connect the PIR sensor to Raspberry Pi GPIO.

Read sensor output using the Raspberry Pi GPIO node.

PIR sensor outputs 1 when motion is detected.

PIR sensor outputs 0 when no motion is detected.

Prepare data for Logistic Regression

• msg.payload = ("motion detected": msg.payload-1?1:0);

return msg;

Train a Logistic Regression Model using past PIR readings.

Obtain the equation.