Infrared devices that work like TV remote controls will soon help the Marin County Open Space District keep a digital count of visitors on 10 roads trails in the District. Sensors called Eco-Counters ...

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I recently had to build an infrared close proximity sensor that could tell if something was dropped in a parcel delivery drop box. After some searching, I ended up using a microcontroller and a piece ...

Oil and gas production and work in confined spaces exposes field personnel to a variety of toxic and explosive gases in everyday drilling, processing, transport, and municipal operations. Explosive ...