The Wireless Motion Sensor is a PIR (passive infra-red) based motion sensor that sends a message whenever motion is detected. (It sends a message when activated and again when motion is no longer detected.) The sensor also includes an ambient temperature sensor that displays on the desktop app. I have had several inquiries for motion based sensors, a few of the applications include:

• There is a group in California that is building systems to help elders remain in their homes longer. Motion sensors allow caregivers to know that their patients are up and active, when their up through the night and when they are raiding the refrigerator :-)
• I have a customer who built one to let him know when his cats were in his workshop.
• I use it to let me know when the deer and other critters are in my vegetable garden.

Operation: The sensor is battery powered and designed to run for a year on a single charge. Place it on a shelf, attach it to a wall, on pole in the yard etc. and it will let you know when someone or something enters its field of view. Battery life will depend on how often it needs to send messages. Placed on a shelf in a busy hallway in my home I am getting on average 120 transmissions per day. Based on my back of the envelope calculation I am expecting it to run for more than a year before needing to be recharged. Your mileage will vary.

Note: When placed outdoors, low temperatures (around 40f and below) will affect battery performance and may even stop transmitting until it warms up again.

The Sensible Living Receiver and Desktop application are designed to work with the Motion Sensor. The Desktop App can then be configured to send you a message when the sensor detects motion.

Also available on this site:

• Receiver
• Mini-Plant Sensor
• Mini-Temperature Monitor
• Mini-Water leak detector
• Mini-Tilt Sensor
• Mini-Light Sensor
• Mini-General Purpose Sensor
• Temperature and Humidity Monitor
• Refrigerator/freezer temperature monitor
• Quad AC Current monitor (monitors up to four circuits simultaneously)
• Wireless MQ2 Combustible Gas sensor
• General Purpose Sensor board
• Motion Sensor
• Range Extender
• USB to Serial Adapter

Why did you make it?

Surrounded by woods we have had a variety of critters getting into our vegetable garden, including squirrels, opossums, raccoons, rabbits, armadillos, deer and even turtles (who knew turtles would eat cantaloupe). While the sensor cannot see the turtle it does fine with the rest.