Скачать или смотреть How to setup current based anemometer / wind speed sensor with Arduino | Robu’s Two Minute Tutorials

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In this quick and informative guide, we’ll will configure a current based wind speed sensor. These sensors usually output a current from signal pin to ground which varies from 4mA to 20mA based on windspeed (in this case it is 0m/s to 30m/s).

Timestamps:
0:00 Intro
0:10 What is anemometer
0:12 Components needed
0:35 Circuit Diagram
0:45 Connections
2:11 Arduino Code
2:33 Output Testing


We are using a resistor across signal and ground. This resistor will have some voltage across it as current flows, we will observe this voltage and realize what the wind speed is,
following are the calculations performed to calculate wind speed:

raw value = (value coming from resistor)
voltage = (raw value / 1023.0) x 5.0
here we are mapping the ADC pin to 1023 bits and multiplying by our voltage which is 5 volt.

Windspeed = (current – 4.0) / (16.0)*60.0

here instead of 60, put the maximum value in m/s that your sensor can sense, for example, for 30m/s you put windspeed = (current – 4.0) / (16.0)*30 .
To convert the windspeed to meter per second we use:
Windspeed_mps = windspeed * 0.27778 where 0.27778 is a constant we use to convert kmph to mps.
You can find the code at below link:
https://drive.google.com/file/d/1ydgP...

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