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

[Klaus] wanted some sort of aid for parking his car, and after running across a $4 ultrasonic ... the voice is set up to speak the distance from an object to the sensor from 10 cm to 1 m in ...

While early scientists and inventors famously underestimated the value of radar, through the lens of history we can see how useful it became. Even though radar uses electromagnetic waves to detect ...