Abstract: The following article presents preliminary research concepts on the analysis and prevention of pressure ulcers at different stages using a sensor-based system with the purpose of lowering ...

The device uses an ultrasonic sensor to detect nearby obstacles and provides real-time audio feedback, helping users navigate their environment more safely and independently.

Based on your application, you can use any sensor as you want in place of the DHT11 sensor. For example, if you want to trigger an SMS alert when motion is detected, then you might opt for a PIR ...