Development

Sensors / Gases Board:

» Ga 01: Temperature Sensor Reading

In this example the Gases 2.0 board is turned on and the MCP9700A temperature sensor read every second approximately, printing the result through the USB.

Required Materials

1 x Waspmote
1 x Battery
1 x Coin cell
1 x Gases 2.0 board
1 x Temperature sensor (MCP9700A)

Notes

* Remember to connect the battery to Waspmote for proper operation
* The connection of the sensor is described in the Gases 2.0 technical guide

Code

/*  
 *  ------ [Ga_1] - Temperature Sensor for Gases v20-------- 
 *  
 *  Explanation: Turn on the Gases Board v20 and read the tempearture
 *  sensor every second, printing the result through the USB
 *  
 *  Copyright (C) 2012 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:           0.1 
 *  Design:            David Gascón 
 *  Implementation:    
 */

#include <WaspSensorGas_v20.h>

//Variable to store the read temperature value
float temperatureVal;

void setup()
{
  //Turn on the USB and print a start message
  USB.ON();
  USB.println(F("start"));
  delay(100);
}
 
void loop()
{
  //Turn on the sensor board and wait for stabilization and sensor response time
  SensorGasv20.ON();
  delay(10); 
 
  //Read the sensor 
  temperatureVal = SensorGasv20.readValue(SENS_TEMPERATURE);
  
  //Turn off the sensor board
  SensorGasv20.OFF();
  
  //Print the result through the USB
  USB.print(F("Temperature: "));
  USB.print(temperatureVal);
  USB.println(F("ºC"));
  
  delay(1000);
}

Output

B#
start
Temperature: 21.6129035949ºC
Temperature: 21.2903194427ºC
Temperature: 21.2903194427ºC

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