PIR (motion) sensor
We have 7 units in our Sydney Warehouse available for immediate dispatch.
We can get a further 100 units in Australia from Adafruit. If you order today, we can dispatch this stock between Jan 25, 2020 - Jan 28, 2020.
PIR sensors are used to detect motion from pets/humanoids from about 20 feet away (possibly works on zombies, not guaranteed). This one has an adjustable delay before firing (approx 2-4 seconds), adjustable sensitivity and we include a 1 foot (30 cm) cable with a socket so you can easily reposition the sensor or mount it using the two holes on either side.
Runs on 5V-12V power (if you need to run it off of 3V you can do that by bypassing the regulator, but that means doing a bit of soldering). Digital signal output is 3.3V high/low. Sensing range is about 7 meters (120 degree cone).
For a full tutorial with wiring diagrams, CircuitPython and Arduino code examples and project ideas, PIR sensor tutorial page!