HUZZAH Feather support for The Monk Capacitor Moisture Sensor?

[adafruit_support_carter]

OK, give it a go when you can and reply back here with what happens. Even it doesn't work right away, it shouldn't take much tweaking to get it to work. May need to iterate a few times.

[charliesologuitar]

Will do, I will hopefully receive the Sensor in a few days.....again, Thank You for all your time, and help, Carter....

[charliesologuitar]

Hi Carter,

I have the sensor hooked up to the HUZZAH, but not getting any data from it.....the sensor LED is on, and varies in color when I touch it, so it (the sensor) definitely has power, but HUZZAH is not seeing data....should the pins be changed (I am using 13 and 15 for rx and tx)?

Charlie

[adafruit_support_carter]

Please paste here what is showing up in the Serial Monitor when you run the sketch.

[charliesologuitar]

Carter,

Also, the large LED on the sensor does respond to ledOff() and ledOn() functions (I type in a, "L" for ledOn, and, "l" for ledOff, but I am not getting any sensor data. This is the current sketch (I modified you sketch slightly)...

Code: Select all

// This is, Charlie_Code_Rev1 - 1/19/23

#include <SoftwareSerial.h>

#define BUFMAX 20

// Set pins used here
#define rxPin 13
#define txPin 15

SoftwareSerial ss =  SoftwareSerial(rxPin, txPin);


//------------------------------------------------------------
// Monk Makes Plant Monitor helper functions
//------------------------------------------------------------

int parseInt() {
  char buf[BUFMAX];
  for (uint8_t i=0; i<BUFMAX; i++) {
    buf[i] = ss.read();
    if (buf[i]=='\n') break;
  }
  return atoi(buf);
}

float parseFloat() {
  char buf[BUFMAX];
  for (uint8_t i=0; i<BUFMAX; i++) {
    buf[i] = ss.read();
    if (buf[i]=='\n') break;
  }
  return atof(buf);  
}

float getWater() {
  ss.write("w");
  while (!ss.read() == '=') {};
  return parseFloat();
}

float getTemp() {
  ss.write("t");
  while (!ss.read() == '=') {};
  return parseFloat();  
}

float getHumidity() {
  ss.write("h");
  while (!ss.read() == '=') {};
  return parseFloat();   
}


// I beleive these "ledOn" and "ledOff" functions, simply send either an L, or l, to the Moisture Sensor, via the "SoftwareSerial protcol" 

void ledOn() {
  ss.write("L");
}

void ledOff() {
  ss.write("l");
}

//--------------------------------------
// End of Plant Monitor functions
//--------------------------------------


//--------------------------------------
// Setup function 
//--------------------------------------

void setup() {
  Serial.begin(9600);

  // initialize software serial
  ss.begin(9600);

 // Initialize the built-in LED as an output, and initially off
  pinMode(LED_BUILTIN, OUTPUT);     
  digitalWrite(LED_BUILTIN, HIGH);


  // blink LED at start...not sure which LED this refers to -CT
  for (uint8_t i=0; i<5; i++) {
    delay(200);
    ledOn();
    delay(200);
    ledOff();
  }
}

//--------------------------------------
// End of Setup function
//--------------------------------------



//--------------------------------------
// Main Loop function
//--------------------------------------

void loop() {
//  int water;
  float temperature, humidity, water;

  water = getWater();
  temperature = getTemp();
  humidity = getHumidity();

  Serial.print("Soil Moisture level (in percent %) = "); Serial.println(water);
  Serial.print("Ambiant Temperature (in degrees C) = "); Serial.println(temperature);
  Serial.print("Ambiant Relative Humidity level (in percent %) = "); Serial.println(humidity);
  Serial.print("  \n"); 
 
 
 // This "if", custom statement (my idea), will looks at the serial monitor message for an, L or l, input, and react as such //

  if (Serial.available()) {
    char cmd = Serial.read();
    if (cmd == 'L') {
      ledOn();
      Serial.print("L received;  LED should be on  \n"); 
      digitalWrite(LED_BUILTIN, LOW);
    }
    else if (cmd == 'l') {
       ledOff();
       Serial.print("l received; LED should be off  \n"); 
       digitalWrite(LED_BUILTIN, HIGH);
    }
    
  }
 
  
 delay(7000);

}


//-------------------------------
// End of Main Loop and sketch
//-------------------------------

[adafruit_support_carter]

Is this stuff showing up in the Serial Monitor at all?

Code: Select all

  Serial.print("Soil Moisture level (in percent %) = "); Serial.println(water);
  Serial.print("Ambiant Temperature (in degrees C) = "); Serial.println(temperature);
  Serial.print("Ambiant Relative Humidity level (in percent %) = "); Serial.println(humidity);
  Serial.print("  \n"); 

[charliesologuitar]

HI Carter,

Yes, this is the serial output:

[adafruit_support_carter]

Try this:

Code: Select all

#include <SoftwareSerial.h>

#define BUFMAX 20

// Set pins used here
#define rxPin 13
#define txPin 15

SoftwareSerial ss =  SoftwareSerial(rxPin, txPin);

//------------------------------------------------------------
// Monk Makes Plant Monitor helper functions
//------------------------------------------------------------
int parseInt() {
  char buf[BUFMAX];
  for (uint8_t i=0; i<BUFMAX; i++) {
    buf[i] = ss.read();
    if (buf[i]=='\n') break;
  }
  return atoi(buf);
}

float parseFloat() {
  char buf[BUFMAX];
  for (uint8_t i=0; i<BUFMAX; i++) {
    buf[i] = ss.read();
    if (buf[i]=='\n') break;
  }
  return atof(buf);  
}

int getWater() {
  ss.write("w");
  while (!(ss.read() == '=')) {};
  return parseInt();
}

float getTemp() {
  ss.write("t");
  while (!(ss.read() == '=')) {};
  return parseFloat();  
}

float getHumidity() {
  ss.write("h");
  while (!(ss.read() == '=')) {};
  return parseFloat();   
}

void ledOn() {
  ss.write("L");
}

void ledOff() {
  ss.write("l");
}



void setup() {
  Serial.begin(9600);

  // initialize software serial
  ss.begin(9600);

  // blink LED at start
  for (uint8_t i=0; i<5; i++) {
    delay(200);
    ledOn();
    delay(200);
    ledOff();
  }
}

void loop() {
  int water;
  float temperature, humidity;

  water = getWater();
  temperature = getTemp();
  humidity = getHumidity();

  Serial.print("Water = "); Serial.println(water);
  Serial.print("Temperature = "); Serial.println(temperature);
  Serial.print("Humidity = "); Serial.println(humidity);

  delay(1000);
}

[charliesologuitar]

Same output basically.......no data...

[adafruit_support_carter]

Yah, don't know. It's probably something simple, but I think iterating here is going to be too painful. Guessing you still want a refund?

[charliesologuitar]

Carter,

Check this out...getting data now, but not sure if it is accurate.....think I am real close...

Code: Select all

// This is, Charlie_Code_Rev3 - 1/20/23

#include <SoftwareSerial.h>

#define BUFMAX 20

// Set pins used here
#define rxPin 13
#define txPin 15

SoftwareSerial ss =  SoftwareSerial(rxPin, txPin);


//------------------------------------------------------------
// Monk Makes Plant Monitor helper functions
//------------------------------------------------------------

int parseInt() {
  char buf[BUFMAX];
  for (uint8_t i=0; i<BUFMAX; i++) {
    buf[i] = ss.read();
    if (buf[i]=='\n') break;
  }
  return atoi(buf);
}

float parseFloat() {
  char buf[BUFMAX];
  for (uint8_t i=0; i<BUFMAX; i++) {
    buf[i] = ss.read();
    if (buf[i]=='\n') break;
  }
  return atof(buf);  
}

float getWater() {
  ss.write("w");
  while (!ss.read() == '=') {};
  return parseFloat();
}

float getTemp() {
  ss.write("t");
  while (!ss.read() == '=') {};
  return parseFloat();  
}

float getHumidity() {
  ss.write("h");
  while (!ss.read() == '=') {};
  return parseFloat();   
}


// I beleive these "ledOn" and "ledOff" functions, simply send either an L, or l, to the Moisture Sensor, via the "SoftwareSerial protcol" 

void ledOn() {
  ss.write("L");
}

void ledOff() {
  ss.write("l");
}

//--------------------------------------
// End of Plant Monitor functions
//--------------------------------------


//--------------------------------------
// Setup function 
//--------------------------------------

void setup() {
  Serial.begin(9600);

  // initialize software serial
  ss.begin(9600);

 // Initialize the built-in LED as an output, and initially off
  pinMode(LED_BUILTIN, OUTPUT);     
  digitalWrite(LED_BUILTIN, HIGH);


  // blink LED at start...not sure which LED this refers to -CT
  for (uint8_t i=0; i<5; i++) {
    delay(200);
    ledOn();
    delay(200);
    ledOff();
  }
}

//--------------------------------------
// End of Setup function
//--------------------------------------



//--------------------------------------
// Main Loop function
//--------------------------------------

void loop() {
//  int water;
  float temperature, humidity, water;

  water = getWater();
  temperature = getTemp();
  humidity = getHumidity();

  Serial.print(" \n");
  ss.write("w");
  ss.read();
  Serial.print("Soil Moisture level (in percent %) = "); Serial.print(ss.read());
  Serial.print(" \n");

  ss.write("t");
  ss.read();
  Serial.print("Ambiant Temperature (in degrees C) = "); Serial.print(ss.read());
  Serial.print(ss.read());
  Serial.print(" \n");

  ss.write("h");
  ss.read();
  Serial.print("Ambiant Relative Humidity level (in percent %) "); Serial.print(ss.read());
  Serial.print(ss.read());
  Serial.print(" \n");
  Serial.print(" \n"); 


 // This "if", custom statement (my idea), will looks at the serial monitor message for an, L or l, input, and react as such //

  if (Serial.available()) {
    char cmd = Serial.read();
    if (cmd == 'L') {
      ledOn();
      Serial.print("L received;  LED should be on  \n"); 
      digitalWrite(LED_BUILTIN, LOW);
    }
    else if (cmd == 'l') {
       ledOff();
       Serial.print("l received; LED should be off  \n"); 
       digitalWrite(LED_BUILTIN, HIGH);
    }
    else if (cmd == 'v') {
       Serial.print("v received; this is version  \n");
       ss.write("v");
       ss.read();
       Serial.print(ss.read());
       Serial.print(" \n");
    }
  }
 
  
 delay(7000);

}


//-------------------------------
// End of Main Loop and sketch
//-------------------------------

[charliesologuitar]

Hi Carter,

I think I got it working!!!

See attached (note: probe was not in soil at the time of reading, therefore 0 moisture reading)

Charlie

Monk_Moisture_Sensor_Ouput_working_sketch_1_21_23.docx

(59.74 KiB) Downloaded 11 times

[adafruit_support_carter]

Neat. The values are changing and do look reasonable.

The temperature and humidity is coming from the sensor in the red box. Can try breathing on that to see if temperature and humidity go up.

The soil moisture is based on a capacitance reading of the "blade" part of the board (green arrow). Try grabbing that and pressing between fingers to see if moisture reading changes.

sens.png (149.46 KiB) Viewed 79 times

[charliesologuitar]

Hi Carter,

This is another output, with the sensor sitting in approx 2 " of water in a coup....

Charlie...

[charliesologuitar]

Carter,

For some weird reason, I am no longer getting any data from Moisture sensor.....Version is coming back as, "0"....it was, "1", when working...

Sensor on board large LED lights and changes color when I touch it....seems to be a comm issue...

(same sketch...no code changes)..

Any idea what might have happened?  I tried power cycling but no change...any ideas? If bad, how do I return for a replacement?

Charlie...