PIR Motion Sensor LED Ceiling Light – Arduino Compatible

PIR Motion Sensor LED Ceiling Light – Arduino Compatible

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This motion sensor LED ceiling light board has been designed using 4 white LEDs each of 1-3W, PIR sensor module, Atmega328 microcontroller, low ohm IRLR7843 MOSFET, and few other components. The PIR sensor detects the infra-red rays emitted by human motion within the detection area and switches on the 4 white LEDs for 10 seconds.  The project helps in energy-saving applications and new green building projects. Detecting distance: 1 to 20 feet. Detecting angle: 360 degrees. Installation height 2-15 feet. 2 mounting holes are provided to mount this board. It is advisable to use this board indoors.

PIR Motion Sensor LED Ceiling Light – Arduino Compatible – [Link]

Mike is the founder and editor of Electronics-Lab.com, an electronics engineering community/news and project sharing platform. He studied Electronics and Physics and enjoys everything that has moving electrons and fun. His interests lying on solar cells, microcontrollers and switchmode power supplies. Feel free to reach him for feedback, random tips or just to say hello :-)

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David

“The project helps in energy-saving applications and new green building projects.” Really? There are four 3volt LEDs being run in parallel from a 12v supply through current limiting resistors. At the very least the LEDs could have been connected in series pairs to reduce the wasted power dissipated in the resistors. It looks like a nice board but please don’t brandish green credentials on something so inefficient.

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