As we all know, wearing a helmet is mandatory in most countries, including India while driving a vehicle, not just because of ...

a 5 V from the Arduino and the transmitter. He designed the receiver side with equal care. Conceptually the circuit there is simple, consisting of the ultrasonic receiver, followed by a transistor ...

Smith] from the University of Washington, which purports to construct a low-throughput RF transmitter from little ... offering 13.6 dBi of gain. The receiver is a pair of high-gain LNAs, a ...