Linking two Mayfly Boards Together

This topic has 4 replies, 3 voices, and was last updated 2022-10-06 at 3:59 PM by Shannon Hicks.

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2022-10-02 at 7:40 PM #17364
James_NZ
Participant
Hi,

I am having problems with the interference between MODBUS and SDI12 sensors on a Mayfly v0.5 board. I can remove either one and the other works perfectly, but together I end up with around 20% -9999 values, usually for the SDI12 CTD. I am virtually certain this has to do with the home-made modbus wing that I have built for this system. I would love to upgrade to a Mayfly v1.1 but unfortunately the modbus wings haven’t been developed for those yet, so I am stuck with the system I have. Given the circumstances, I was thinking that perhaps I could use another Mayfly v0.5 board (I have a few lying around) to record the MODBUS sensor while the original board can focus on the SDI12.

My question is, would it be possible to power the secondary board via the original board? I could then possibly use the same battery/solar panel setup.

Thanks for your help, and apologies if this is a silly question.

James
2022-10-04 at 12:52 PM #17367
neilh20
Participant
Hi James, if you have the spare jumper cable sockets you could try it and it probably will work.

The challenge is the Mayfly doesn’t have a lot of capacitive buffering and the LiIon battery performs that function. It might be more reliable to have a battery on each Mayfly and run the solar panel to both. Of course the boards need to be kept physically isolated so they don’t connect electrically.

My node is using a LT500/SDI-12 and a Keller Acculevel/Modbus on Mayfly 0.5B https://monitormywatershed.org/sites/TUCA-Na13/

Its using a release based on 0.28.5 ~ https://github.com/neilh10/ModularSensors/releases/tag/v0.28.5.release1_210711 and it is built as a working release in https://github.com/neilh10/ModularSensors/tree/v0.28.5.release1_210711/examples/tu_xx01 with src/ms_cfg.h_LT5KA_lte copied to ms_cfg.h

2022-10-05 at 12:23 PM #17372

Moderator

For the past year we’ve had 8 stations using SDI12 CTD sensors and Yosemitech wipered turbidity sensors together on one prototype Mayfly using the EnviroDIY RS-485 half-shield. It also works with other generic modbus adapters too. We’ve had no issues with not being able to read the sensors or with dropped readings. I’m attaching the code below so you can see how I arranged my sketch. I don’t know what modbus sensors you’re using but I assume they are ones already included in our library?

/** =========================================================================
 * @file mayfly1_y511turbidity_example.ino
 * @brief Example for Mayfly v1.0 revA turbidity logger.
 *
 * This example shows proper settings for the following configuration:
 *
 * Mayfly v1.0 revA board only 
 * EnviroDIY RS-485 half-shield
 * EnviroDIY Sim7080 LTE Bee module
 * Yosemitech Y511A turbidity sensor
 * Hydros21 CTD sensor
 * ======================================================================= */

// ==========================================================================
//  Defines for the Arduino IDE
//  NOTE:  These are ONLY needed to compile with the Arduino IDE.
//         If you use PlatformIO, you should set these build flags in your
//         platformio.ini
// ==========================================================================
/** Start [defines] */
#ifndef TINY_GSM_RX_BUFFER
#define TINY_GSM_RX_BUFFER 64
#endif
#ifndef TINY_GSM_YIELD_MS
#define TINY_GSM_YIELD_MS 2
#endif
/** End [defines] */

// ==========================================================================
//  Include the libraries required for any data logger
// ==========================================================================
/** Start [includes] */
// The Arduino library is needed for every Arduino program.
#include <Arduino.h>

// EnableInterrupt is used by ModularSensors for external and pin change
// interrupts and must be explicitly included in the main program.
#include <EnableInterrupt.h>

// Include the main header for ModularSensors
#include <ModularSensors.h>
/** End [includes] */

#include <AltSoftSerial.h>      
AltSoftSerial altSoftSerial(6,5);   //  the EnviroDIY RS-485 half-shield uses pins 5 and 6
#define modbusSerial altSoftSerial  // For AltSoftSerial

// ==========================================================================
//  Data Logging Options
// ==========================================================================
/** Start [logging_options] */
// The name of this program file
const char* sketchName = "mayfly1_ctd_y511modbus_LTE_example.ino";
// Logger ID, also becomes the prefix for the name of the data file on SD card
const char* LoggerID = "ExampleLogger";
// How frequently (in minutes) to log data
const uint8_t loggingInterval = 10;
// Your logger's timezone.
const int8_t timeZone = -5;  // Eastern Standard Time
// NOTE:  Daylight savings time will not be applied!  Please use standard time!

// Set the input and output pins for the logger
// NOTE:  Use -1 for pins that do not apply
const int32_t serialBaud = 57600;  // Baud rate for debugging
const int8_t  greenLED   = 8;       // Pin for the green LED
const int8_t  redLED     = 9;       // Pin for the red LED
const int8_t  buttonPin  = 21;      // Pin for debugging mode (ie, button pin)
const int8_t  wakePin    = 31;  // MCU interrupt/alarm pin to wake from sleep
// Mayfly 0.x D31 = A7
// Set the wake pin to -1 if you do not want the main processor to sleep.
// In a SAMD system where you are using the built-in rtc, set wakePin to 1
const int8_t sdCardPwrPin   = -1;  // MCU SD card power pin
const int8_t sdCardSSPin    = 12;  // SD card chip select/slave select pin
const int8_t sensorPowerPin = 22;  // MCU pin controlling main sensor power
/** End [logging_options] */

#define modemSerial Serial1


// ==========================================================================
/** Start [sim_com_sim7080] */
// For almost anything based on the SIMCom SIM7080G
#include <modems/SIMComSIM7080.h>

// Create a reference to the serial port for the modem
HardwareSerial& modemSerial = Serial1;  // Use hardware serial if possible
const int32_t   modemBaud = 9600;  //  SIM7080 does auto-bauding by default, but
                                   //  for simplicity we set to 9600

// Modem Pins - Describe the physical pin connection of your modem to your board
// NOTE:  Use -1 for pins that do not apply

const int8_t modemVccPin = 18;
// MCU pin controlling modem power --- Pin 18 is the power enable pin for the
// bee socket on Mayfly v1.0, use -1 if using Mayfly 0.5b or if the bee socket
// is constantly powered (ie you changed SJ18 on Mayfly 1.x to 3.3v)
const int8_t modemStatusPin  = 19;  // MCU pin used to read modem status
const int8_t modemSleepRqPin = 23;  // MCU pin for modem sleep/wake request
const int8_t modemLEDPin = redLED;  // MCU pin connected an LED to show modem
                                    // status

// Network connection information
const char* apn =
    "hologram";  // APN connection name, typically Hologram unless you have a
                 // different provider's SIM card. Change as needed

// Create the modem object
SIMComSIM7080 modem7080(&modemSerial, modemVccPin, modemStatusPin,
                        modemSleepRqPin, apn);
// Create an extra reference to the modem by a generic name
SIMComSIM7080 modem = modem7080;
/** End [sim_com_sim7080] */


// ==========================================================================
//  Using the Processor as a Sensor
// ==========================================================================
/** Start [processor_sensor] */
#include <sensors/ProcessorStats.h>

// Create the main processor chip "sensor" - for general metadata
const char*    mcuBoardVersion = "v1.0";
ProcessorStats mcuBoard(mcuBoardVersion);
/** End [processor_sensor] */


// ==========================================================================
//  Maxim DS3231 RTC (Real Time Clock)
// ==========================================================================
/** Start [ds3231] */
#include <sensors/MaximDS3231.h>

// Create a DS3231 sensor object
MaximDS3231 ds3231(1);
/** End [ds3231] */

//----------------------------------------------------------------------------
#include <sensors/YosemitechY511.h>

// NOTE: Extra hardware and software serial ports are created in the "Settings
// for Additional Serial Ports" section

byte          y511ModbusAddress = 0x01;  // The modbus address of the Y511
const int8_t  y511AdapterPower = sensorPowerPin;  // RS485 adapter power pin (-1 if unconnected)
const int8_t  y511SensorPower = 22;  // Sensor power pin
const int8_t  y511EnablePin   = -1;  // Adapter RE/DE pin (-1 if not applicable)
const uint8_t y511NumberReadings = 5;
// The manufacturer recommends averaging 10 readings, but we take 5 to minimize
// power consumption

// Create a Y511-A Turbidity sensor object
YosemitechY511 y511(y511ModbusAddress, modbusSerial, y511AdapterPower,
                    y511SensorPower, y511EnablePin, y511NumberReadings);


// ==========================================================================
//  Meter Hydros 21 Conductivity, Temperature, and Depth Sensor
// ==========================================================================
/** Start [hydros21] */
#include <sensors/MeterHydros21.h>

const char*   hydrosSDI12address = "1";  // The SDI-12 Address of the Hydros 21
const uint8_t hydrosNumberReadings = 6;  // The number of readings to average
const int8_t  SDI12Power = sensorPowerPin;  // Power pin (-1 if unconnected)
const int8_t  SDI12Data  = 7;               // The SDI12 data pin

// Create a Meter Hydros 21 sensor object
MeterHydros21 hydros(*hydrosSDI12address, SDI12Power, SDI12Data,
                     hydrosNumberReadings);
/** End [hydros21] */


// ==========================================================================
//  Creating the Variable Array[s] and Filling with Variable Objects
// ==========================================================================
/** Start [variable_arrays] */
Variable* variableList[] = {
    new MeterHydros21_Cond(&hydros),    
    new MeterHydros21_Depth(&hydros),
    new MeterHydros21_Temp(&hydros),  
    new YosemitechY511_Temp(&y511),
    new YosemitechY511_Turbidity(&y511),
    new ProcessorStats_Battery(&mcuBoard),
    new MaximDS3231_Temp(&ds3231),
    new Modem_SignalPercent(&modem),
};

// All UUID's, device registration, and sampling feature information can be
// pasted directly from Monitor My Watershed.  To get the list, click the "View
// token UUID list" button on the upper right of the site page.

// *** CAUTION --- CAUTION --- CAUTION --- CAUTION --- CAUTION ***
// Check the order of your variables in the variable list!!!
// Be VERY certain that they match the order of your UUID's!
// Rearrange the variables in the variable list if necessary to match!
// *** CAUTION --- CAUTION --- CAUTION --- CAUTION --- CAUTION ***
const char *UUIDs[] =                                                      // UUID array for device sensors
{
    "12345678-abcd-1234-ef00-1234567890ab",   // Specific conductance (Meter_Hydros21_Cond)
    "12345678-abcd-1234-ef00-1234567890ab",   // Water depth (Meter_Hydros21_Depth)
    "12345678-abcd-1234-ef00-1234567890ab",   // Temperature (Meter_Hydros21_Temp)
    "12345678-abcd-1234-ef00-1234567890ab",   // Temperature (YosemiTech_Y511-A_Temp)
    "12345678-abcd-1234-ef00-1234567890ab",   // Turbidity (YosemiTech_Y511-A_Turbidity)
    "12345678-abcd-1234-ef00-1234567890ab",   // Battery voltage (EnviroDIY_Mayfly_Batt)
    "12345678-abcd-1234-ef00-1234567890ab",   // Temperature (Maxim_DS3231_Temp)
    "12345678-abcd-1234-ef00-1234567890ab"    // Percent full scale (Cellular_SignalPercent)
};
const char *registrationToken = "12345678-abcd-1234-ef00-1234567890ab";   // Device registration token
const char *samplingFeature = "12345678-abcd-1234-ef00-1234567890ab";     // Sampling feature UUID

// Count up the number of pointers in the array
int variableCount = sizeof(variableList) / sizeof(variableList[0]);

// Create the VariableArray object
VariableArray varArray(variableCount, variableList, UUIDs);
/** End [variable_arrays] */


// ==========================================================================
//  The Logger Object[s]
// ==========================================================================
/** Start [loggers] */
// Create a new logger instance
Logger dataLogger(LoggerID, loggingInterval, &varArray);
/** End [loggers] */


// ==========================================================================
//  Creating Data Publisher[s]
// ==========================================================================
/** Start [publishers] */
// Create a data publisher for the Monitor My Watershed/EnviroDIY POST endpoint
#include <publishers/EnviroDIYPublisher.h>
EnviroDIYPublisher EnviroDIYPOST(dataLogger, &modem.gsmClient,
                                 registrationToken, samplingFeature);
/** End [publishers] */


// ==========================================================================
//  Working Functions
// ==========================================================================
/** Start [working_functions] */
// Flashes the LED's on the primary board
void greenredflash(uint8_t numFlash = 4, uint8_t rate = 75) {
    for (uint8_t i = 0; i < numFlash; i++) {
        digitalWrite(greenLED, HIGH);
        digitalWrite(redLED, LOW);
        delay(rate);
        digitalWrite(greenLED, LOW);
        digitalWrite(redLED, HIGH);
        delay(rate);
    }
    digitalWrite(redLED, LOW);
}

// Reads the battery voltage
// NOTE: This will actually return the battery level from the previous update!
float getBatteryVoltage() {
    if (mcuBoard.sensorValues[0] == -9999) mcuBoard.update();
    return mcuBoard.sensorValues[0];
}


// ==========================================================================
// Arduino Setup Function
// ==========================================================================
/** Start [setup] */
void setup() {
    // Start the primary serial connection
    Serial.begin(serialBaud);

    // Print a start-up note to the first serial port
    Serial.print(F("Now running "));
    Serial.print(sketchName);
    Serial.print(F(" on Logger "));
    Serial.println(LoggerID);
    Serial.println();

    Serial.print(F("Using ModularSensors Library version "));
    Serial.println(MODULAR_SENSORS_VERSION);
    Serial.print(F("TinyGSM Library version "));
    Serial.println(TINYGSM_VERSION);
    Serial.println();

    
    // Start the serial connection with the modem
    modemSerial.begin(modemBaud);

    // Set up pins for the LED's
    pinMode(greenLED, OUTPUT);
    digitalWrite(greenLED, LOW);
    pinMode(redLED, OUTPUT);
    digitalWrite(redLED, LOW);
    // Blink the LEDs to show the board is on and starting up
    greenredflash();

    pinMode(20, OUTPUT);  // for proper operation of the onboard flash memory
                          // chip's ChipSelect (Mayfly v1.0 and later)
                          
     altSoftSerial.begin(9600);   //needed for proper operation of the EnviroDIY RS-485 half-shield
     modbusSerial.begin(9600);


    // Set the timezones for the logger/data and the RTC
    // Logging in the given time zone
    Logger::setLoggerTimeZone(timeZone);
    // It is STRONGLY RECOMMENDED that you set the RTC to be in UTC (UTC+0)
    Logger::setRTCTimeZone(0);

    // Attach the modem and information pins to the logger
    dataLogger.attachModem(modem);
    modem.setModemLED(modemLEDPin);
    dataLogger.setLoggerPins(wakePin, sdCardSSPin, sdCardPwrPin, buttonPin,
                             greenLED);

    // Begin the logger
    dataLogger.begin();

    // Note:  Please change these battery voltages to match your battery
    // Set up the sensors, except at lowest battery level
    if (getBatteryVoltage() > 3.4) {
        Serial.println(F("Setting up sensors..."));
        varArray.setupSensors();
    }


    /** Start [setup_sim7080] */
    modem.setModemWakeLevel(HIGH);   // ModuleFun Bee inverts the signal
    modem.setModemResetLevel(HIGH);  // ModuleFun Bee inverts the signal
    Serial.println(F("Waking modem and setting Cellular Carrier Options..."));
    modem.modemWake();  // NOTE:  This will also set up the modem
    modem.gsmModem.setBaud(modemBaud);   // Make sure we're *NOT* auto-bauding!
    modem.gsmModem.setNetworkMode(38);   // set to LTE only
                                         // 2 Automatic
                                         // 13 GSM only
                                         // 38 LTE only
                                         // 51 GSM and LTE only
    modem.gsmModem.setPreferredMode(1);  // set to CAT-M
                                         // 1 CAT-M
                                         // 2 NB-IoT
                                         // 3 CAT-M and NB-IoT
    /** End [setup_sim7080] */


    // Sync the clock if it isn't valid or we have battery to spare
    if (getBatteryVoltage() > 3.55 || !dataLogger.isRTCSane()) {
        // Synchronize the RTC with NIST
        // This will also set up the modem
        dataLogger.syncRTC();
    }

    // Create the log file, adding the default header to it
    // Do this last so we have the best chance of getting the time correct and
    // all sensor names correct
    // Writing to the SD card can be power intensive, so if we're skipping
    // the sensor setup we'll skip this too.
    if (getBatteryVoltage() > 3.4) {
        Serial.println(F("Setting up file on SD card"));
        dataLogger.turnOnSDcard(
            true);  // true = wait for card to settle after power up
        dataLogger.createLogFile(true);  // true = write a new header
        dataLogger.turnOffSDcard(
            true);  // true = wait for internal housekeeping after write
    }

    // Call the processor sleep
    Serial.println(F("Putting processor to sleep\n"));
    dataLogger.systemSleep();
}
/** End [setup] */


// ==========================================================================
//  Arduino Loop Function
// ==========================================================================
/** Start [loop] */
// Use this short loop for simple data logging and sending
void loop() {
    // Note:  Please change these battery voltages to match your battery
    // At very low battery, just go back to sleep
    if (getBatteryVoltage() < 3.4) {
        dataLogger.systemSleep();
    }
    // At moderate voltage, log data but don't send it over the modem
    else if (getBatteryVoltage() < 3.55) {
        dataLogger.logData();
    }
    // If the battery is good, send the data to the world
    else {
        dataLogger.logDataAndPublish();
    }
}
/** End [loop] */

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/** =========================================================================

* @file mayfly1_y511turbidity_example.ino

* @brief Example for Mayfly v1.0 revA turbidity logger.

* This example shows proper settings for the following configuration:

* Mayfly v1.0 revA board only

* EnviroDIY RS-485 half-shield

* EnviroDIY Sim7080 LTE Bee module

* Yosemitech Y511A turbidity sensor

* Hydros21 CTD sensor

* ======================================================================= */

// ==========================================================================

// Defines for the Arduino IDE

// NOTE: These are ONLY needed to compile with the Arduino IDE.

// If you use PlatformIO, you should set these build flags in your

// platformio.ini

// ==========================================================================

/** Start [defines] */

#ifndef TINY_GSM_RX_BUFFER

#define TINY_GSM_RX_BUFFER 64

#endif

#ifndef TINY_GSM_YIELD_MS

#define TINY_GSM_YIELD_MS 2

#endif

/** End [defines] */

// ==========================================================================

// Include the libraries required for any data logger

// ==========================================================================

/** Start [includes] */

// The Arduino library is needed for every Arduino program.

#include <Arduino.h>

// EnableInterrupt is used by ModularSensors for external and pin change

// interrupts and must be explicitly included in the main program.

#include <EnableInterrupt.h>

// Include the main header for ModularSensors

#include <ModularSensors.h>

/** End [includes] */

#include <AltSoftSerial.h>

AltSoftSerial altSoftSerial(6,5); // the EnviroDIY RS-485 half-shield uses pins 5 and 6

#define modbusSerial altSoftSerial // For AltSoftSerial

// ==========================================================================

// Data Logging Options

// ==========================================================================

/** Start [logging_options] */

// The name of this program file

const char* sketchName = "mayfly1_ctd_y511modbus_LTE_example.ino";

// Logger ID, also becomes the prefix for the name of the data file on SD card

const char* LoggerID = "ExampleLogger";

// How frequently (in minutes) to log data

const uint8_t loggingInterval = 10;

// Your logger's timezone.

const int8_t timeZone = -5; // Eastern Standard Time

// NOTE: Daylight savings time will not be applied! Please use standard time!

// Set the input and output pins for the logger

// NOTE: Use -1 for pins that do not apply

const int32_t serialBaud = 57600; // Baud rate for debugging

const int8_t greenLED = 8; // Pin for the green LED

const int8_t redLED = 9; // Pin for the red LED

const int8_t buttonPin = 21; // Pin for debugging mode (ie, button pin)

const int8_t wakePin = 31; // MCU interrupt/alarm pin to wake from sleep

// Mayfly 0.x D31 = A7

// Set the wake pin to -1 if you do not want the main processor to sleep.

// In a SAMD system where you are using the built-in rtc, set wakePin to 1

const int8_t sdCardPwrPin = -1; // MCU SD card power pin

const int8_t sdCardSSPin = 12; // SD card chip select/slave select pin

const int8_t sensorPowerPin = 22; // MCU pin controlling main sensor power

/** End [logging_options] */

#define modemSerial Serial1

// ==========================================================================

/** Start [sim_com_sim7080] */

// For almost anything based on the SIMCom SIM7080G

#include <modems/SIMComSIM7080.h>

// Create a reference to the serial port for the modem

HardwareSerial& modemSerial = Serial1; // Use hardware serial if possible

const int32_t modemBaud = 9600; // SIM7080 does auto-bauding by default, but

// for simplicity we set to 9600

// Modem Pins - Describe the physical pin connection of your modem to your board

// NOTE: Use -1 for pins that do not apply

const int8_t modemVccPin = 18;

// MCU pin controlling modem power --- Pin 18 is the power enable pin for the

// bee socket on Mayfly v1.0, use -1 if using Mayfly 0.5b or if the bee socket

// is constantly powered (ie you changed SJ18 on Mayfly 1.x to 3.3v)

const int8_t modemStatusPin = 19; // MCU pin used to read modem status

const int8_t modemSleepRqPin = 23; // MCU pin for modem sleep/wake request

const int8_t modemLEDPin = redLED; // MCU pin connected an LED to show modem

// status

// Network connection information

const char* apn =

"hologram"; // APN connection name, typically Hologram unless you have a

// different provider's SIM card. Change as needed

// Create the modem object

SIMComSIM7080 modem7080(&modemSerial, modemVccPin, modemStatusPin,

modemSleepRqPin, apn);

// Create an extra reference to the modem by a generic name

SIMComSIM7080 modem = modem7080;

/** End [sim_com_sim7080] */

// ==========================================================================

// Using the Processor as a Sensor

// ==========================================================================

/** Start [processor_sensor] */

#include <sensors/ProcessorStats.h>

// Create the main processor chip "sensor" - for general metadata

const char* mcuBoardVersion = "v1.0";

ProcessorStats mcuBoard(mcuBoardVersion);

/** End [processor_sensor] */

// ==========================================================================

// Maxim DS3231 RTC (Real Time Clock)

// ==========================================================================

/** Start [ds3231] */

#include <sensors/MaximDS3231.h>

// Create a DS3231 sensor object

MaximDS3231 ds3231(1);

/** End [ds3231] */

//----------------------------------------------------------------------------

#include <sensors/YosemitechY511.h>

// NOTE: Extra hardware and software serial ports are created in the "Settings

// for Additional Serial Ports" section

byte y511ModbusAddress = 0x01; // The modbus address of the Y511

const int8_t y511AdapterPower = sensorPowerPin; // RS485 adapter power pin (-1 if unconnected)

const int8_t y511SensorPower = 22; // Sensor power pin

const int8_t y511EnablePin = -1; // Adapter RE/DE pin (-1 if not applicable)

const uint8_t y511NumberReadings = 5;

// The manufacturer recommends averaging 10 readings, but we take 5 to minimize

// power consumption

// Create a Y511-A Turbidity sensor object

YosemitechY511 y511(y511ModbusAddress, modbusSerial, y511AdapterPower,

y511SensorPower, y511EnablePin, y511NumberReadings);

// ==========================================================================

// Meter Hydros 21 Conductivity, Temperature, and Depth Sensor

// ==========================================================================

/** Start [hydros21] */

#include <sensors/MeterHydros21.h>

const char* hydrosSDI12address = "1"; // The SDI-12 Address of the Hydros 21

const uint8_t hydrosNumberReadings = 6; // The number of readings to average

const int8_t SDI12Power = sensorPowerPin; // Power pin (-1 if unconnected)

const int8_t SDI12Data = 7; // The SDI12 data pin

// Create a Meter Hydros 21 sensor object

MeterHydros21 hydros(*hydrosSDI12address, SDI12Power, SDI12Data,

hydrosNumberReadings);

/** End [hydros21] */

// ==========================================================================

// Creating the Variable Array[s] and Filling with Variable Objects

// ==========================================================================

/** Start [variable_arrays] */

Variable* variableList[] = {

new MeterHydros21_Cond(&hydros),

new MeterHydros21_Depth(&hydros),

new MeterHydros21_Temp(&hydros),

new YosemitechY511_Temp(&y511),

new YosemitechY511_Turbidity(&y511),

new ProcessorStats_Battery(&mcuBoard),

new MaximDS3231_Temp(&ds3231),

new Modem_SignalPercent(&modem),

};

// All UUID's, device registration, and sampling feature information can be

// pasted directly from Monitor My Watershed. To get the list, click the "View

// token UUID list" button on the upper right of the site page.

// *** CAUTION --- CAUTION --- CAUTION --- CAUTION --- CAUTION ***

// Check the order of your variables in the variable list!!!

// Be VERY certain that they match the order of your UUID's!

// Rearrange the variables in the variable list if necessary to match!

// *** CAUTION --- CAUTION --- CAUTION --- CAUTION --- CAUTION ***

const char *UUIDs[] = // UUID array for device sensors

{

"12345678-abcd-1234-ef00-1234567890ab", // Specific conductance (Meter_Hydros21_Cond)

"12345678-abcd-1234-ef00-1234567890ab", // Water depth (Meter_Hydros21_Depth)

"12345678-abcd-1234-ef00-1234567890ab", // Temperature (Meter_Hydros21_Temp)

"12345678-abcd-1234-ef00-1234567890ab", // Temperature (YosemiTech_Y511-A_Temp)

"12345678-abcd-1234-ef00-1234567890ab", // Turbidity (YosemiTech_Y511-A_Turbidity)

"12345678-abcd-1234-ef00-1234567890ab", // Battery voltage (EnviroDIY_Mayfly_Batt)

"12345678-abcd-1234-ef00-1234567890ab", // Temperature (Maxim_DS3231_Temp)

"12345678-abcd-1234-ef00-1234567890ab" // Percent full scale (Cellular_SignalPercent)

};

const char *registrationToken = "12345678-abcd-1234-ef00-1234567890ab"; // Device registration token

const char *samplingFeature = "12345678-abcd-1234-ef00-1234567890ab"; // Sampling feature UUID

// Count up the number of pointers in the array

int variableCount = sizeof(variableList) / sizeof(variableList[0]);

// Create the VariableArray object

VariableArray varArray(variableCount, variableList, UUIDs);

/** End [variable_arrays] */

// ==========================================================================

// The Logger Object[s]

// ==========================================================================

/** Start [loggers] */

// Create a new logger instance

Logger dataLogger(LoggerID, loggingInterval, &varArray);

/** End [loggers] */

// ==========================================================================

// Creating Data Publisher[s]

// ==========================================================================

/** Start [publishers] */

// Create a data publisher for the Monitor My Watershed/EnviroDIY POST endpoint

#include <publishers/EnviroDIYPublisher.h>

EnviroDIYPublisher EnviroDIYPOST(dataLogger, &modem.gsmClient,

registrationToken, samplingFeature);

/** End [publishers] */

// ==========================================================================

// Working Functions

// ==========================================================================

/** Start [working_functions] */

// Flashes the LED's on the primary board

void greenredflash(uint8_t numFlash = 4, uint8_t rate = 75) {

for (uint8_t i = 0; i < numFlash; i++) {

digitalWrite(greenLED, HIGH);

digitalWrite(redLED, LOW);

delay(rate);

digitalWrite(greenLED, LOW);

digitalWrite(redLED, HIGH);

delay(rate);

}

digitalWrite(redLED, LOW);

}

// Reads the battery voltage

// NOTE: This will actually return the battery level from the previous update!

float getBatteryVoltage() {

if (mcuBoard.sensorValues[0] == -9999) mcuBoard.update();

return mcuBoard.sensorValues[0];

}

// ==========================================================================

// Arduino Setup Function

// ==========================================================================

/** Start [setup] */

void setup() {

// Start the primary serial connection

Serial.begin(serialBaud);

// Print a start-up note to the first serial port

Serial.print(F("Now running "));

Serial.print(sketchName);

Serial.print(F(" on Logger "));

Serial.println(LoggerID);

Serial.println();

Serial.print(F("Using ModularSensors Library version "));

Serial.println(MODULAR_SENSORS_VERSION);

Serial.print(F("TinyGSM Library version "));

Serial.println(TINYGSM_VERSION);

Serial.println();

// Start the serial connection with the modem

modemSerial.begin(modemBaud);

// Set up pins for the LED's

pinMode(greenLED, OUTPUT);

digitalWrite(greenLED, LOW);

pinMode(redLED, OUTPUT);

digitalWrite(redLED, LOW);

// Blink the LEDs to show the board is on and starting up

greenredflash();

pinMode(20, OUTPUT); // for proper operation of the onboard flash memory

// chip's ChipSelect (Mayfly v1.0 and later)

altSoftSerial.begin(9600); //needed for proper operation of the EnviroDIY RS-485 half-shield

modbusSerial.begin(9600);

// Set the timezones for the logger/data and the RTC

// Logging in the given time zone

Logger::setLoggerTimeZone(timeZone);

// It is STRONGLY RECOMMENDED that you set the RTC to be in UTC (UTC+0)

Logger::setRTCTimeZone(0);

// Attach the modem and information pins to the logger

dataLogger.attachModem(modem);

modem.setModemLED(modemLEDPin);

dataLogger.setLoggerPins(wakePin, sdCardSSPin, sdCardPwrPin, buttonPin,

greenLED);

// Begin the logger

dataLogger.begin();

// Note: Please change these battery voltages to match your battery

// Set up the sensors, except at lowest battery level

if (getBatteryVoltage() > 3.4) {

Serial.println(F("Setting up sensors..."));

varArray.setupSensors();

}

/** Start [setup_sim7080] */

modem.setModemWakeLevel(HIGH); // ModuleFun Bee inverts the signal

modem.setModemResetLevel(HIGH); // ModuleFun Bee inverts the signal

Serial.println(F("Waking modem and setting Cellular Carrier Options..."));

modem.modemWake(); // NOTE: This will also set up the modem

modem.gsmModem.setBaud(modemBaud); // Make sure we're *NOT* auto-bauding!

modem.gsmModem.setNetworkMode(38); // set to LTE only

// 2 Automatic

// 13 GSM only

// 38 LTE only

// 51 GSM and LTE only

modem.gsmModem.setPreferredMode(1); // set to CAT-M

// 1 CAT-M

// 2 NB-IoT

// 3 CAT-M and NB-IoT

/** End [setup_sim7080] */

// Sync the clock if it isn't valid or we have battery to spare

if (getBatteryVoltage() > 3.55 || !dataLogger.isRTCSane()) {

// Synchronize the RTC with NIST

// This will also set up the modem

dataLogger.syncRTC();

}

// Create the log file, adding the default header to it

// Do this last so we have the best chance of getting the time correct and

// all sensor names correct

// Writing to the SD card can be power intensive, so if we're skipping

// the sensor setup we'll skip this too.

if (getBatteryVoltage() > 3.4) {

Serial.println(F("Setting up file on SD card"));

dataLogger.turnOnSDcard(

true); // true = wait for card to settle after power up

dataLogger.createLogFile(true); // true = write a new header

dataLogger.turnOffSDcard(

true); // true = wait for internal housekeeping after write

}

// Call the processor sleep

Serial.println(F("Putting processor to sleep\n"));

dataLogger.systemSleep();

}

/** End [setup] */

// ==========================================================================

// Arduino Loop Function

// ==========================================================================

/** Start [loop] */

// Use this short loop for simple data logging and sending

void loop() {

// Note: Please change these battery voltages to match your battery

// At very low battery, just go back to sleep

if (getBatteryVoltage() < 3.4) {

dataLogger.systemSleep();

}

// At moderate voltage, log data but don't send it over the modem

else if (getBatteryVoltage() < 3.55) {

dataLogger.logData();

}

// If the battery is good, send the data to the world

else {

dataLogger.logDataAndPublish();

}

/** End [loop] */

2022-10-05 at 5:26 PM #17376
James_NZ
Participant
Hi @shicks (and thanks @neilh20),

Thanks for that. I am using a Yosemitech Y511-A with a Hydros CTD (Gen 1). My code is fairly similar to yours. I notice that you use pin 22 to power the Y511 (line 145) where I have ‘-1’. I also don’t see the line ‘AltSoftSerial altSoftSerial(6,5);' in my code. Do you think this could be causing the problem?

FYI, more information (and my current code) can be found in this post:

https://www.envirodiy.org/topic/hydros-ctd-10-regularly-dropping-out-9999/

Since posting the topic above I have attached ferrite collars to no avail and inspected all sensors and cables for damage (which there is none). I have also switched the TTL-RS-485 board on the MODBUS wing with another (working) TTL-RS-485, which also doesn’t solve the problem. I can get a perfect CTD record by removing the MODBUS wing. The strange thing is that I have 6 other sites with identical code that work perfectly.

I would love to solve this issue without having to install a secondary board.

James
- 2022-10-06 at 3:59 PM #17384
 Shannon Hicks
 Moderator
 I use pin 22 on line 145 because I’m using a prototype Mayfly board that is able to generate 12v to directly power the external sensors. If you’re using an external 12v source for your sensors, then it’s fine to put -1 on line 145. And I’m using a Max13412 RS-485 chip on my modbus adapter, which has auto direction control and internal 5v generation, which makes it easy to connect since it only needs a single 12v supply, but the auto direction control means I can set line 146 to -1 also. In my experimenting, I found that communicating with this chip using pins 5 and 6 using AltSoftSerial was the most reliable way to do it, so that’s why my code looks like it does. There’s probably other ways to do it, but this method has been very stable so far.

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