Documentation **[[Documentation|Home]]**
====== BASIC INFORMATION ======
\\
<fc #990000>**Discontinued - Information for old sensors only!**</fc>\\
<fc #000080>[[sensor_soil_2| Sensor for measure soil temperature and humidity V2.0.0]]</fc>\\
\\
Name: **Sensor for measure soil temperature and humidity**\\
Type: **Sensor Board**\\
Version: **1.0.0**\\
Author: **Dubravko Penezic**\\
Copyright: **Creative Commons BY-NC-SA v 3.0**\\
Implemented function:
  * **Measure soil temperature in 3 points (20cm and 10cm deep and on soil level) with DS18B20**
  * **4 capacitive area (2 between 20cm and 10 cm deep, and 2 between 10cm deep and soil level)**
  * **LED signaling (blue, green, red 0805 LED)**
  * **2x5 connector**
  * **2 3mm mounting holes**
  * **Clear foil surface protection and dielectric grass pin temperature sensor protection**
  * **Modular deep (PCB can be shorten to 10cm deep)**
  * **Compatibile with Arduino 1-Wire and CapSense library (10M resistor and 220pF parallel condensator)**

===== PCB Top and Bottom Image =====
{{:soil_sensor:pcb_tb_soil_sensor.png?300|}}

===== Schematic =====
{{:soil_sensor:soil_sensor_sch_v100.png?300|}}

===== Final product =====
{{:ebay:ebay_sensors:img_2780_ebay.jpg?300|}}\\
Revision to Schematic:\\
** Add 4K7 pullup resistor to 1-wire line**\\
====== Example of use ======
{{:soil_sensor:soil_sensor_complet.png?300|}}
====== Software Example ======
Used library [[arduino_lib_dp1wbasic|Dp1WBasic  library]], [[arduino_lib_dp1wds18xxxtermo|Dp1WDS18xxxTermo library]] and [[http://playground.arduino.cc//Main/CapacitiveSensor?from=Main.CapSense| Capacitive Sensing]] .\\ \\
<file ino DpSoilCapTempSensor_V_1_0.ino>
/*
Author: Dubravko Penezic

Version: 1.0, 2013

This code is example how to use Sensor for measure soil temperature and humidity.

Source code is provided as is, without any warranty.

Distributetd under CC BY v 3.0

*/

// include 1Wire library
#include <Dp1WBasic.h>
#include <Dp1WDS18xxxTermo.h>

// Data wire is plugged into port 5 on the Arduino
#define ONE_WIRE_BUS 5

// Setup a oneWire instance to communicate with any OneWire devices (not just Maxim/Dallas temperature ICs)
Dp1WBasic oneWire(ONE_WIRE_BUS);

// Pass our oneWire reference to Dallas Temperature. 
Dp1WDS18xxxTermo tSen(&oneWire);

// arrays to hold device address
SensorInfo tempSensors[16];

//include CapSense library
#include <CapSense.h>

CapSense   cs_7_9 = CapSense(7,9);        // 10M resistor between pins 7 & 9, pin 9 is sensor pin 
CapSense   cs_7_10 = CapSense(7,10);        // 10M resistor between pins 7 & 10, pin 10 is sensor pin
CapSense   cs_7_11 = CapSense(7,11);        // 10M resistor between pins 7 & 11, pin 11 is sensor pin
CapSense   cs_7_12 = CapSense(7,12);        // 10M resistor between pins 7 & 12, pin 12 is sensor pin

// set LED pin
byte led1 = 6;
byte led2 = 8;
byte led3 = 13;

void setup(void) {
  //   cs_7_9.set_CS_AutocaL_Millis(0xFFFFFFFF);     // turn off autocalibrate on channel 1 - just as an example

  Serial.begin(9600);
  Serial.println("DpSoilCapTempSensor V 1.0");
  pinMode(led1, OUTPUT);
  pinMode(led2, OUTPUT);
  pinMode(led3, OUTPUT);
  digitalWrite(led1, HIGH);
  digitalWrite(led2, HIGH);
  digitalWrite(led3, HIGH);
  delay(10000);
}

void loop(void) {

  byte broj = tSen.readTemperature(tempSensors, 16, NORMAL_SEARCH);

  if(broj == 0 ) { 
    Serial.print("\n\nNo 1-Wire Temperature Sensor Found on Digital Pin ");
    Serial.println(ONE_WIRE_BUS);
  } else {
    for(byte i = 0; i < broj; i++) {
      Serial.print("\n\nTemperature sensor ");
      Serial.print(i);
      Serial.println(".");

      Serial.print("ROM Address: \t\t");
      for(byte j=0; j<8;j++) {
        if (tempSensors[i].dAddr[j] < 16) Serial.print("0");
        Serial.print(tempSensors[i].dAddr[j], HEX);
      }

      Serial.print("\nSensor type: \t\t");
      switch (tempSensors[i].dAddr[0]) {
        case DS18B20MODEL:
	  Serial.println("DS18B20");
  	  break;
        case DS1822MODEL:
	  Serial.println("DS1822");
	  break;
        case DS18S20MODEL:
	  Serial.println("DS18S20/DS1820");
	  break;
      }
    
      Serial.print("Actual temperature \t");
      Serial.print(tempSensors[i].dTemperature);
      Serial.print(" C (");
      Serial.print(getResolution(tempSensors[i].dAddr,tempSensors[i].dTempReso),DEC);
      Serial.println(" bit)");
    
      Serial.print("Alarm Low Temperature \t");
      Serial.print(tempSensors[i].dMinAlarm,2);
      Serial.println(" C");
    
      Serial.print("Alarm High Temperature \t");
      Serial.print(tempSensors[i].dMaxAlarm,2);
      Serial.println(" C");

      if(i==0) {     
        if(tempSensors[i].dTemperature>28) {
          digitalWrite(led1, HIGH);
        } else {
          digitalWrite(led1, LOW);
        }
      }
      if(i==1) {     
        if(tempSensors[i].dTemperature>28) {
          digitalWrite(led2, HIGH);
        } else {
          digitalWrite(led2, LOW);
        }
      }
      if(i==2) {     
        if(tempSensors[i].dTemperature>28) {
          digitalWrite(led3, HIGH);
        } else {
          digitalWrite(led3, LOW);
        }
      }
    
    }
  }
 
  for(byte j = 0; j <25; j++) {
     long start = millis();
     long total1 =  cs_7_9.capSense(30);
     long total2 =  cs_7_10.capSense(30);
     long total3 =  cs_7_11.capSense(30);
     long total4 =  cs_7_12.capSense(30);
    
     Serial.print(millis() - start);        // check on performance in milliseconds
     Serial.print("\t");                    // tab character for debug windown spacing

     Serial.print(total1);                  // print sensor output 1
     Serial.print("\t");
     Serial.print(total2);                  // print sensor output 2
     Serial.print("\t");
     Serial.print(total3);                // print sensor output 3
     Serial.print("\t");
     Serial.println(total4);                // print sensor output 3mit data to serial por
  
     delay(20);
  }
}

byte getResolution(uint8_t* deviceAddress, uint8_t conf) {
  
  if (deviceAddress[0] == DS18S20MODEL) return 9; // this model has a fixed resolution

  switch (conf) {
    case TEMP_12_BIT:
      return 12;
      
    case TEMP_11_BIT:
      return 11;
       
    case TEMP_10_BIT:
      return 10;
        
    case TEMP_9_BIT:
      return 9;

  }
  
  return 0;
}
</file>