Development v12

Warning - Product Update

All the resources present on this section belong to Waspmote v12, Waspmote Plug & Sense! v12 and Meshlium v3.8.

If you have a Waspmote v15, Waspmote Plug & Sense! v15 or Meshlium v4.0 please go to the new Development Section.

Check what is your version and what are the differences between the old and the new one in this document.

» SW 02: ORP sensor

Turn on the Smart Water Board and reads the ORP sensor extracting the value from the calibration values and temperature compensation

Required Materials

1 x Waspmote
1 x Battery
1 x Smart Water Sensor Board
1 x Oxidation-Reduction potential Sensor
1 x ORP Calibration kit

Notes

- The calibration offset value selected in the code is an example for a specific sensor, each unit will require its own calibration parameter.
- Introduce a '0' for the offset if calibration is not to be performed.
- If the sensor has been kept stored for long it may take longer to reach a steady output.
- This example is valid for Waspmote v12 and Waspmote v15

Code

/*  
 *  ------ [SW_02] - ORP sensor Reading for Smart Water-------- 
 *  
 *  Explanation: Turn on the Smart Water Board and reads the ORP sensor
 *  extracting the value from the calibration values and temperature
 *  compensation
 *  
 *  Copyright (C) 2016 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:           3.0
 *  Design:            David Gascón 
 *  Implementation:    Ahmad Saad
 */

#include <WaspSensorSW.h>

float ORPValue;

// Offset obtained from sensor calibration
#define calibration_offset 0.0

ORPClass ORPSensor;

void setup()
{
  USB.ON();
  USB.println(F("ORP example for Smart Water..."));

  ///////////////////////////////////////////
  // 1. Turn ON the Smart Water sensor board 
  ///////////////////////////////////////////  
  Water.ON(); 
}

void loop()
{
  ///////////////////////////////////////////
  // 2. read the sensors
  ///////////////////////////////////////////   
  
  // Reading of the ORP sensor
  ORPValue = ORPSensor.readORP();
  // Apply the calibration offset
  ORPValue = ORPValue - calibration_offset;

  ///////////////////////////////////////////
  // 3. Print the output values
  ///////////////////////////////////////////

  USB.print(F("ORP Estimated: "));
  USB.print(ORPValue);
  USB.println(F(" volts"));  


  delay(1000);
}

Output

H#
ORP Estimated: 0.2316429853 volts
ORP Estimated: 0.2380407094 volts
ORP Estimated: 0.2388026952 volts
ORP Estimated: 0.2366409540 volts
ORP Estimated: 0.2252402544 volts
ORP Estimated: 0.2246790170 volts
ORP Estimated: 0.2245602846 volts
ORP Estimated: 0.2245052099 volts
ORP Estimated: 0.2245924711 volts
ORP Estimated: 0.2246036767 volts
ORP Estimated: 0.2245290517 volts
ORP Estimated: 0.2245228528 volts
ORP Estimated: 0.2246909379 volts
ORP Estimated: 0.2246682882 volts
ORP Estimated: 0.2246353864 volts
ORP Estimated: 0.2246213197 volts

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