In his write-up, [Mike] started by listing all the different sensors he had considered to measure the oil level and finally opted for an ultrasonic sensor. In his opinion, this kind of sensor is ...

There are three primary types of fingerprint scanners ... the quality of the scan. Ultrasonic sensors are the newcomers to fingerprint scanning, bringing a touch of premium innovation.

For [Jianjia Ma]’s QingStation, he decided to build another type of wind sensor: An ultrasonic anemometer. Ultrasonic anemometers have no moving parts but come at the cost of significantly more ...