One of the most common first sensors people buy for their home is a motion sensor. But in almost all cases, you want a presence sensor instead. The one I'd want is the FP300, which Aqara released ...

With many appliances receiving the XL treatment in 2024, we weren't quite expecting SwitchBot to go in the opposite direction with its latest robot vacuum cleaner. The Mini Robot Vacuum K10+ Pro ...

But where lies a challenge, there’s also an opportunity, as [Ido Gendel] shows us with this remote-controlled proximity sensor ... try at this used an OBP732 reflective transmitter and an ...

A reflective optosensor counts revolutions as the turbine spins in an HVAC duct, and with a little calibration the rig produces good results. The limitations are obvious: duct turbulence ...