Made een Windsensor for MySensors, Works well!
used an adafruit https://www.adafruit.com/product/1733 windmeter.
/**
* The MySensors Arduino library handles the wireless radio link and protocol
* between your home built sensors/actuators and HA controller of choice.
* The sensors forms a self healing radio network with optional repeaters. Each
* repeater and gateway builds a routing tables in EEPROM which keeps track of the
* network topology allowing messages to be routed to nodes.
*
* Created by Henrik Ekblad <henrik.ekblad@mysensors.org>
* Copyright (C) 2013-2015 Sensnology AB
* Full contributor list: https://github.com/mysensors/Arduino/graphs/contributors
*
* Documentation: http://www.mysensors.org
* Support Forum: http://forum.mysensors.org
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 2 as published by the Free Software Foundation.
*
*******************************
*
* REVISION HISTORY
* versie 1.1 bert ramselaar
* Used an UNO with a NRF24+ with external antenna
*
* DESCRIPTION
* Arduino Wind Sensor
* Adafruit Anemometer Wind Speed Sensor -> https://www.adafruit.com/product/1733
* connect the sensor as follows :
* VCC (brown) >>> 5V
* A (blue) >>> A0 or any other analog pin
* GND (black) >>> GND
*
*
*/
// Enable debug prints
#define MY_DEBUG
// Enable and select radio type attached
#define MY_RADIO_NRF24
//#define MY_RADIO_RFM69
#include <MySensors.h>
#define CHILD_ID_WIND 0
#define WIND_SENSOR_ANALOG_PIN 0
unsigned long SLEEP_TIME = 2000; // Sleep time between reads (in milliseconds)
// VARIABLES
float W_Raw_A0 = 0; // stores the RAW value coming from the sensor 0 to 1023
float W_Volt = 0; // stores voltage calculated form A0
float W_WindSpeed = 0; // Windspeed in meters per second (m/s)
float W_WindSpeed_last = 0; // previus Windspeed sended
float W_Voltage_Conversion = .004882814; //This constant maps the value provided from the analog read function, which ranges from 0 to 1023, to actual voltage, which ranges from 0V to 5V
float W_voltageMin = .4; // Mininum output voltage from anemometer in mV.
float W_voltageMax = 2.0; // Maximum output voltage from anemometer in mV.
float W_windSpeedMin = 0; // Wind speed in meters/sec corresponding to minimum voltage
float W_windSpeedMax = 32; // Wind speed in meters/sec corresponding to maximum voltage
int W_beaufort = 0; // Calculated beaufort scale
MyMessage windMsg(CHILD_ID_WIND, V_WIND);
void presentation()
{
// Send the sketch version information to the gateway and Controller
sendSketchInfo("Wind Sensor", "1.1");
// Register all sensors to gateway (they will be created as child devices)
present(CHILD_ID_WIND, S_WIND);
}
void loop()
{
W_Raw_A0 = analogRead(WIND_SENSOR_ANALOG_PIN); // Get WIND value from A0
W_Volt = W_Raw_A0 * W_Voltage_Conversion; //Convert sensor value to actual voltage
//Convert voltage value to wind speed using range of max and min voltages and wind speed for the anemometer
if (W_Volt <= W_voltageMin)
{
W_WindSpeed = 0; //Check if voltage is below minimum value. If so, set wind speed to zero.
}
else
{
// calculate winspeed in Meters per Second
W_WindSpeed = (W_Volt - W_voltageMin) * W_windSpeedMax / (W_voltageMax - W_voltageMin); //For voltages above minimum value, use the linear relationship to calculate wind speed.
// corrected // ~~W_WindSpeed = W_WindSpeed * 3.6 // convert from m/s to km/h~~
}
Serial.print("Raw Signal Value (0-1023): ");
Serial.print(W_Raw_A0);
Serial.print(" - Voltage: ");
Serial.print(W_Volt);
Serial.print(" - Windspeed M/S: ");
Serial.print(W_WindSpeed); // unit: M/S
Serial.print(" - Beaufort: ");
Serial.println(beaufort()); // unit: beaufort scale
if (ceil(W_WindSpeed) != W_WindSpeed_last)
{
**/// CHANGED convert float to de nearest integer and converted (W_WindSpeed * 3.6) to km/h ///**
send(windMsg.set((int16_t)ceil(W_WindSpeed * 3.6)));
W_WindSpeed_last = ceil(W_WindSpeed);
//beaufort(); // option windspeed in beafort
//send(windMsg.set(W_beaufort)); // option windspeed in beafort
}
sleep(SLEEP_TIME);
}
int beaufort(void)
{
if (W_WindSpeed < 0.39)
{
W_beaufort = 0;
return W_beaufort;
}
else if (W_WindSpeed >= 0.3 & W_WindSpeed <= 1.5)
{
W_beaufort = 1;
return W_beaufort;
}
else if (W_WindSpeed >= 1.6 & W_WindSpeed <= 3.3)
{
W_beaufort = 2;
return W_beaufort;
}
else if (W_WindSpeed >= 3.4 & W_WindSpeed <= 5.4)
{
W_beaufort = 3;
return W_beaufort;
}
else if (W_WindSpeed >= 5.5 & W_WindSpeed <= 7.9)
{
W_beaufort = 4;
return W_beaufort;
}
else if (W_WindSpeed >= 8.0 & W_WindSpeed <= 10.7)
{
W_beaufort = 5;
return W_beaufort;
}
else if (W_WindSpeed >= 10.8 & W_WindSpeed <= 13.8)
{
W_beaufort = 6;
return W_beaufort;
}
else if (W_WindSpeed >= 13.9 & W_WindSpeed <= 17.1)
{
W_beaufort = 7;
return W_beaufort;
}
else if (W_WindSpeed >= 17.2 & W_WindSpeed <= 20.7)
{
W_beaufort = 8;
return W_beaufort;
}
else if (W_WindSpeed >= 20.8 & W_WindSpeed <= 24.4)
{
W_beaufort = 9;
return W_beaufort;
}
else if (W_WindSpeed >= 24.5 & W_WindSpeed <= 28.4)
{
W_beaufort = 10;
return W_beaufort;
}
else if (W_WindSpeed >= 28.5 & W_WindSpeed <= 32.6)
{
W_beaufort = 11;
return W_beaufort;
}
else if (W_WindSpeed >= 32.7)
{
W_beaufort = 12;
return W_beaufort;
}
}
