I spent more than 14 years on staff, most recently as the director of operations for PC Labs, before hitting the freelance circuit as a contributing editor.

It's also not clear how to hardwire the doorbell if you do not have an existing doorbell circuit. The Reolink Doorbell (Battery) is a pill-shaped device topped by the camera and sensor housing ...

One leg of the doorbell circuit is passed through the center of this sensor, and the sensor itself is connected up to your microcontroller of choice (here, and ESP32). The rest is software ...

After having this problem a few times [Lee] decided to rig up a doorbell notifier for his Android phone. [Lee]’s doorbell uses a 10 VAC supply to ring a chime. To reduce modifications to the ...