There are many proven benefits to having a wake-up light (also known as a sunrise alarm/light), one of which includes a cheerful wake-up as opposed to the ear-splitting aural alert of the alarm clock ...

The goal of this module is to teach students about the properties of sound and computing distance with an ultrasonic sensor. The program can also be used to measure the relative distance. This module ...

Ring didn't do anything particularly innovative with its Alarm Security Kit, but this inexpensive DIY system stands out because of its simplicity.