Some popular electrical projects for college engineering students are an automatic night lamp, a refrigerator door alarm, a device that measures water levels and a circuit that protects against theft while traveling. Another common engineering project for college engineering students is a stun gun, which teaches students about voltage and currents.
Engineering students can create a lamp that senses daylight and shuts off automatically. The device contains a sensor that determines whether it is day or night and is useful for street lights or other outdoor nighttime lighting. A refrigerator alarm similarly uses sensors to detect light. This project is useful for making sure a refrigerator does not sit open unintentionally.
Another common project is to design a device that sounds an alarm if anyone tries to steal a bag or a suitcase. The device contains a circuit and a plug. If the plug detaches from its socket during an attempted snatching, the device alarms, drawing attention to the thief and alerting the item's owner.
In addition, a water-level sensor is an engineering project that measures the amount of water in a container. To complete this project, the student places probes that detect water at several locations in the container. In addition to monitoring liquid levels in a jug, another common application for this project is as a fuel gauge in a vehicle.
To make a stun gun, a student creates a device with high voltage but a low current. In keeping with its name, a stun gun paralyzes or temporarily stuns its target. Modern applications include warfare or law enforcement.