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PIR MOTION SENSOR
Bulk Discounts Available - Savings shown are off EACH Item!
20 Available For Immediate Despatch, A Further 431 Available within 5 working days - Availability Updated on: May 22, 2012 at: 23:21:36 GMT
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.
Red wire is power (5 to 12V). Brown wire is GND. Black wire is open collector Alarm.
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.
The connector is slightly odd but has a 0.1" pitch female connector making it compatible with jumper wires and 0.1" male headers.
Documents: Datasheet
Ready to buy PIR MOTION SENSOR?
20 Available For Immediate Despatch, A Further 431 Available within 5 working days - Availability Updated on: May 22, 2012 at: 23:21:36 GMT
Comments
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Great product
Posted by ahmed on 16th Apr 2012
I buy these 5 at a time and never thought that they were insensitive.
Did you remember to take them out of the pink bubbles bag that they come in before trying it! :P
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Works OK but less sensitive than I had hoped
Posted by Aresby on 11th Apr 2012
I've implemented this in a project and it works "OK".
However, given that my shed light PIR seems to detect me from 30m away with the slightest movement I had hoped this would at least detect me from 3m but it seems somewhat insensitive in both distance and movement sensing (I can move a relatively large amount when 2m in front of it before it triggers).
For my particular project it's OK but I wouldn't use it again if I needed what I would call "standard" sensitivity.
