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Using nodemcu & blynk whenever a motion is detected by PIR Sensor a message is sent to a smartphone anywhere in the world.

Components Required:

  • PIR Sensor – Buy
  • NodeMCU – Buy
  • LED
  • Resistors 1k ohm, 2.2k ohm, 220 ohm

Software Required:

PIR Motion Sensor:

This motion sensor module uses the LHI778 Passive Infrared Sensor and the BISS0001 IC to control how motion is detected. The module features adjustable sensitivity that allows for a motion detection range from 3 meters to 7 meters.

Cirucuit Diagram:


  • Create a New Project.
  • Select NodeMCU as HW Model.
  • Copy the AUTH TOKEN to be used in the code.
  • Includes a Push Notification widget.
  • Press Play (Triangle icon at upper right corner)


I hope this project can help others find their way in the exciting world of electronics and IoT!