Recently an ad on YouTube about an acoustic light sensor/switch module piqued my interest. Out of curiosity, I contacted the online vendor and bought a pair. Named MR-SK50A, the module is less popular ...

The 859 Series DIN-rail timer relay module offers on-/off-delay timer modes and multiple time ranges for applications such as switch and package de-bounce sensors. Untraditionally, the 6-mm components ...

This type of infrared proximity circuit is widely used as an electric switch where physical contact is not desired for hygiene purpose. For example, we commonly see use of infrared proximity sensors ...

When we would leave the house before dark and return after, it was always a game of “not it” to determine who got stuck opening the front door in the dark. Worse yet was vacation time. We set up ...

If you’ve been thinking about how you’d control a 240V appliance with an Arduino without worrying about getting zapped, then here is a solution. We’ve developed a project that interfaces to our MS6148 ...