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Ag xtr 07: GS3 sensor reading

Basic example that turns on, reads and turn off the sensor. Measured parameters are stored in the corresponding class variables and printed by the serial monitor.

Required Materials

- 1 Waspmote Plug & Sense! Smart Agriculture Xtreme - 1 GS3 sensor

Notes

- This example is only valid for Waspmote v15

Code

/*
----------- [Ag_xtr_07] - GS3 sensor reading --------------------
Explanation: Basic example that turns on, reads and turn off the
sensor. Measured parameters are stored in the corresponding class
variables and printed by the serial monitor.
Measured parameters:
- Electrical conductivity
- Volumetric water content
- Temperature of the soil
Copyright (C) 2018 Libelium Comunicaciones Distribuidas S.L.
http://www.libelium.com
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
Version: 3.1
Design: David Gascón
Implementation: J.Siscart, V.Boria
*/
#include <WaspSensorXtr.h>
/*
SELECT THE RIGHT SOCKET FOR EACH SENSOR.
Possible sockets for this sensor are:
- XTR_SOCKET_A _________
- XTR_SOCKET_B |---------|
- XTR_SOCKET_C | A B C |
- XTR_SOCKET_D |_D__E__F_|
Example: a 5TM sensor on socket A will be
[Sensor Class] [Sensor Name] [Selected socket]
Decagon_5TM mySensor (XTR_SOCKET_A);
Refer to the technical guide for information about possible combinations.
www.libelium.com/downloads/documentation/smart_agriculture_xtreme_sensor_board.pdf
*/
// [Sensor Class] [Sensor Name] [Selected socket]
Decagon_GS3 mySensor(XTR_SOCKET_A);
void setup()
{
USB.println(F("GS3 example"));
}
void loop()
{
// 1. Turn ON the sensor
mySensor.ON();
// 2. Read the sensor
/*
Note: read() function does not directly return sensor values.
They are stored in the class vector variables defined for that purpose.
Values are available as a float value
*/
mySensor.read();
// 3. Turn off the sensor
mySensor.OFF();
// 4. Conversion of dielectric permittivity into Volumetric Water Content (VWC)
// for mineral soil using calibration equation
float VWC = ((5.89 * pow(10, -6) * pow(mySensor.sensorGS3.dielectricPermittivity, 3))
- (7.62 * pow(10, -4) * pow(mySensor.sensorGS3.dielectricPermittivity, 2))
+ (3.67 * pow(10, -2) * mySensor.sensorGS3.dielectricPermittivity)
- (7.53 * pow(10, -2))) * 100 ;
// 5. Print information
USB.println(F("---------------------------"));
USB.println(F("GS3"));
USB.print(F("Dielectric Permittivity: "));
USB.printFloat(mySensor.sensorGS3.dielectricPermittivity, 2);
USB.println();
USB.print(F("Volumetric Water Content: "));
USB.printFloat(VWC, 2);
USB.println(F(" %VWC"));
USB.print(F("Electrical Conductivity: "));
USB.printFloat(mySensor.sensorGS3.electricalConductivity, 0);
USB.println(F(" uS/cm"));
USB.print(F("Soil temperature: "));
USB.printFloat(mySensor.sensorGS3.temperature, 1);
USB.println(F(" degrees Celsius"));
USB.println(F("---------------------------\n"));
delay(5000);
}

Output

H#
GS3 example
---------------------------
GS3
Dielectric Permittivity: 1.55
Volumetric Water Content: 26.94 %VWC
Electrical Conductivity: 1 uS/cm
Soil temperature: 24.9 degrees Celsius
---------------------------
---------------------------
GS3
Dielectric Permittivity: 1.54
Volumetric Water Content: 26.94 %VWC
Electrical Conductivity: 1 uS/cm
Soil temperature: 24.9 degrees Celsius
---------------------------
Last modified 2yr ago