SparkFun will be closed May 25, 2015 for Memorial Day. Orders placed after 2pm on Friday the 22nd will ship out on Tuesday. Thanks!
Description: This is a simple to use motion sensor. Power it up and wait 1-2 seconds for the sensor to get a snapshot of the still room. If anything moves after that period, the ‘alarm’ pin will go low.
This unit works great from 5 to 12V (datasheet shows 12V). You can also install a jumper wire past the 5V regulator on board to make this unit work at 3.3V. Sensor uses 1.6mA@3.3V.
The alarm pin is an open collector meaning you will need a pull up resistor on the alarm pin. The open drain setup allows multiple motion sensors to be connected on a single input pin. If any of the motion sensors go off, the input pin will be pulled low.
We’ve finally updated the connector! Gone is the old “odd” connector, now you will find a common 3-pin JST! This makes the PIR Sensor much more accessible for whatever your project may need. Red = Power, White = Ground, and Black = Alarm.
Based on 1 ratings:
i had it hooked up to an LED and it was flashing like crazy whether there was motion or not. Then I found this site http://bildr.org/2011/06/pir_arduino/ and added the resistor and the code from the site. It stlill didn’t work, there was no output on the screen saying “motion detected” I am using an Arduino uno, any ideas as to what I’m doing wrong? Thanks in advance. I’ve loved all the other products I’ve ordered from you including the Drum kit Kit ai - I got that working without any problem.
Hi, It sounds like you should get in touch with our Technical Support team. They’ll be happy to try to help you get up and running. Tech support @ sparkfun .com