20 Results for "air quality"

Mark J HughesJun-7 12:57 PMAre you in SoCal? hamsterdaveJun-7 12:57 PMBack in my day, we had to know CW at FIFTEEN words a minute to even look at a radio! fidJun-7 12:57 PM@Mark J Hughes You also don't need a calculator during the test session. K6FID...

There are various sensor monitoring methods are available some of them using IoT and others using offline protocols like Bluetooth and BLE. But the offline method doesn’t offer a good range and online methods are expensive and very compilated. Today,...

The DHT22 is a basic, low-cost digital temperature and humidity sensor. It uses a capacitive humidity sensor and a thermistor to measure the surrounding air, and spits out a digital signal on the data pin (no analog input pins needed). It's fairly simple...

Introduction Polo and the Pony Express: The T Acronyms Primary Purpose Restoring Communication When Our Infrastructure is Down Secondary Purposes The Ancient Library A Clarkeian Satellite/Spacecraft Analog The Trill Tethered Rocking Orbiting Tracker...

Video showing the bat sonar in actionThis video shows the sensor in action.  The left graph shows the identified targets.  The size of the circles indicates the strength, and the location on the graph is their measured location.  The graph...