Hi! we are here to tell you about our awesome Rubik’s cube solver: youtube mindcuber videoThe ultrasonic sensor sends out sound waves not light to sense the Rubik’s cube when it is there. The motors turn to hold/flip the cube, turn the base and move the light. The color sensor de...
The third type of fingerprint reader is called an ultrasonic scanner, because it uses high-frequency sound waves (ultrasound) to "map" your finger instead of light. If you have a new Samsung smartphone, you'll probably find it has one of these built under the display, which you can use ...