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PIR Infrared Motion Sensor - HC-SR501
PIR Infrared Motion Sensor - HC-SR501


 
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Price: $1.95

Quantity in Stock:13

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Product Code: 168
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This is a simple motion sensor similar to what is found in motion activate lights and security systems.

Two trimpots (the orange adjustment potentiometers on the side of this module) allow you to adjust the sensitivity and output hold delay (how long it will hold the output high after being triggered). Refer to the product photos above for labels showing which trimpot is which. Turn the sensitivity trimpot clockwise for higher motion sensitivity. Turn the hold delay trimpot clockwise for a longer hold delay). Refer to below diagram labeling the different trimpots and the pinout.

Product Contents:
  • 1 — HC-SR501 PIR Infrared Motion Sensor
Specifications:
  • Supply Voltage Range: 5 to 20 V
    • Has on-board 7133 voltage regulator
    • We recommend using supply voltages between 5 and 12 volts to keep from dissipating a lot of heat at the regulator
  • Output signal voltage: 3.3V which is high enough to be read as a high signal on most 5V devices such as Arduinos
  • Output signal is active high, so when movement is detected it outputs a high signal
  • Two trimpots (the orange adjustment potentiometers on the side of this module) allow you to adjust the sensitivity and output hold delay (how long it will hold the output high after being triggered). Refer to the product photos above for labels showing which trimpot is which. Turn the sensitivity trimpot clockwise for higher motion sensitivity. Turn the hold delay trimpot clockwise for a longer hold delay).
  • Sensing Range: ~120 degrees, within 7 meters
  • Minimum Operating Temperature: -15°C
  • Maximum Operating Temperature: 70°C
  • Dimensions: 32.3mm (1.27in) length, 24.7mm (0.97in) width, 25mm (0.98in) height
  • Diameter of Fresnel Lens Base: 23mm (0.91in)
  • Weight: 6g (0.21oz)
Pinout and Adjustments
PIR Module Pinout and Trimpots

Average Rating: 5 of 5 Total Reviews: 10 Write a review

  0 of 0 people found the following review helpful:
 
Good, but slow January 18, 2018
By: Arvid Tomayko from Pittsburgh, PA United States  
You can make the detection faster than stock by making a couple shorts on the board, but it still only makes one detection every few seconds max - not incredibly responsive for interactive/performance applications. Shorts to speed it up are: short across pins 5&6 of the 16-pin IC, and short across the 2nd resistor in from the board edge in the line of surface mount resistors and caps just behind the trim pots.

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  0 of 0 people found the following review helpful:
 
PIR sensor December 30, 2016
By: Tom Richins from Farmington, UT United States  
This device works perfectly.  The adjustment does change the set point of sensitivity.  Have several of them installed

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  0 of 0 people found the following review helpful:
 
Great sensor! September 16, 2016
By: C.Gaufin from Madison, AL United States  
I got some of these for a certain project, but ended up making a game out of them for my boys. They call it trip wire and they try to run/crawl throughout the room without setting off the alarm. Perfect!

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  0 of 0 people found the following review helpful:
 
Nice Little Sensor April 23, 2016
By: Nate Benson from Ephrata, WA United States  
Worked great right out of the box. Sensitivity range and hold delay adjustments make it adaptable to your space.

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  0 of 0 people found the following review helpful:
 
Great product February 5, 2016
By: Matthew Wright from El Paso, TX United States  
Had a little trouble getting this thing up and running but thanks to the very helpful staff at Addicore, I got everything sorted out and it works like a champ now!  It will make for a great addition to my homemade cat toy.

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