The ultrasonic sensor detects the distance to an object and sends the result to the LCD. Based on how close the object is, the buzzer will activate with different beep speeds or stay silent if the ...

The below circuit diagram shows the complete hardware wiring setup of the Arduino-based Smart Walking Stick for the Blind ...

Without any delays, here are the best Phones with Ultrasonic Fingerprint Sensors (March 2025) that make the cut: ...

Optical sensors are a broad class of device for detecting light intensity. This can be just a simple component for notifying when ambient light levels rise above or fall below a prescribed level ...

The counsel also told the HC that the mother of one of the accused youths had lodged a case against four persons on October 17, 2021, alleging molestation when she had gone to farm for work. One of ...