Overcurrent relays with inverse definite minimum time (IDMT) characteristics are widely used in power systems to protect ...

Last year, I took a look at some mostly low-cost passive infrared (PIR) motion sensor modules. Then recently, I became more aware of cheap microwave radar motion sensor modules. The popular version of ...

Members can download this article in PDF format. In this design idea, you will learn how to interface two PIC microcontrollers using a wireless 433-MHz RF transmitter/receiver pair to control up to ...

If you are designing your own intelligent “Graden Computer” with an optional digital plant moisture sensor/water pump controller that lights an LED to alert the user when it is time to water a potted ...

In electronic and industrial automation systems, relay modules play a crucial role by allowing low-power control signals to switch high-power devices. Selecting between a 5V relay module and a 12V ...

Berlin-based startup Relayr charmed the judges at the Code_n startup competition with its kit for building Internet of Things devices, and walked away with €30,000 (US$32,000). The company was one of ...

Monitoring and control devices have been around for decades in various forms, but they’re use is expanding in homes as well as in building automation for HVAC, fire safety, and lighting. At the heart ...