Microwave Motion Detector Notifies Your Smart Phone
1 min read
Summary
Microwave-based sensors that can detect motion are increasingly popular, and can offer solutions to problems that traditional infrared (IR) sensors cannot, such as detecting rodents.
A Texas-based tech developer has built a DIY sensor that uses a microwave radar module, which can be easily connected to an ESP8266 microcontroller to transmit alerts when motion is detected.
This can be used for security purposes, or merely to alert users to activity, such as when a pet uses an indoor cat door.
Microwave sensors do need to be carefully calibrated to prevent false alarms, and some hackers suggest using them in tandem with a passive IR sensor to boost effectiveness.
