SEN0441 Fermion: MEMS Gas Sensor - MiCS-2714 reading 0.0PPM Hydrogen

Hello There!

I have a problem with Fermion: MEMS Gas Sensor - MiCS-2714, trying to make Hydrogen Detector System and when I use sample code from DFRobot I always have 0.0PPM (getGasPPM). I'am producing hydrogen with electrolyzer method directly to sensor so there should be atleast 1ppm of Hydrogen.

Please check my code: 

Ofcourse everything is connected as it should be.

EDIT:

Im using the newer Arduino board Wifi R4.

/*!

 * @file getGasPPM.ino

 * @brief Reading Gas concentration, A concentration of one part per million (PPM).

 * @n When using IIC device, select I2C address,

 * @n the dialing switch A0, A1 (MICS_ADDRESS_0 is [0 0]), (MICS_ADDRESS_1 is [1 0])

 * @n (MICS_ADDRESS_2 is [0 1]), (MICS_ADDRESS_3 is [1 1]).

 * @n When using the Breakout version, connect the adcPin and PowerPin

 * @copyright Copyright (c) 2010 DFRobot Co.Ltd (http://www.dfrobot.com)

 * @license The MIT License (MIT)

 * @author ZhixinLiu([email protected])

 * @version V1.2

 * @date 2021-06-18

 * @url https://github.com/DFRobot/DFRobot_MICS

 */

#include "DFRobot_MICS.h"

#define CALIBRATION_TIME   3                      // Default calibration time is three minutes

// When using I2C communication, use the following program to construct an object by DFRobot_MICS_I2C

/**

 * select i2c device address

 * MICS_ADDRESS_0               0x75

 * MICS_ADDRESS_1               0x76

 * MICS_ADDRESS_2               0x77

 * MICS_ADDRESS_3               0x78

 */

//#define MICS_I2C_ADDRESS MICS_ADDRESS_0

//DFRobot_MICS_I2C mics(&Wire, MICS_I2C_ADDRESS);

// When using the Breakout version, use the following program to construct an object from DFRobot_MICS_ADC

/**

 * adcPin is A0~A5

 * powerPin is General IO

 */

#define ADC_PIN   A0

#define POWER_PIN 10

DFRobot_MICS_ADC mics(/*adcPin*/ADC_PIN, /*powerPin*/POWER_PIN);

void setup()

{

  Serial.begin(115200);

  while(!Serial);

  while(!mics.begin()){

    Serial.println("NO Deivces !");

    delay(1000);

  } Serial.println("Device connected successfully !");

  /**

   * Gets the power mode of the sensor

   * The sensor is in sleep mode when power is on,so it needs to wake up the sensor.

   * The data obtained in sleep mode is wrong

   */

  uint8_t mode = mics.getPowerState();

  if(mode == SLEEP_MODE){

    mics.wakeUpMode();

    Serial.println("wake up sensor success!");

  }else{

    Serial.println("The sensor is wake up mode");

  }

  /**

   * Do not touch the sensor probe when preheating the sensor.

   * Place the sensor in clean air.

   * The default calibration time is 3 minutes.

   */

  while(!mics.warmUpTime(CALIBRATION_TIME)){

    Serial.println("Please wait until the warm-up time is over!");

    delay(1000);

  }

}

void loop()

{

  /**

   * Gas type:

   * MICS-4514 You can get all gas concentration

   * MICS-5524 You can get the concentration of CH4, C2H5OH, H2, NH3, CO

   * MICS-2714 You can get the concentration of NO2

   *   CO       = 0x01  (Carbon Monoxide)  (1    - 1000)PPM

   *   CH4      = 0x02  (Methane)          (1000 - 25000)PPM

   *   C2H5OH   = 0x03  (Ethanol)          (10   - 500)PPM

   *   H2       = 0x06  (Hydrogen)         (1    - 1000)PPM

   *   NH3      = 0x08  (Ammonia)          (1    - 500)PPM

   *   NO2      = 0x0A  (Nitrogen Dioxide) (0.1  - 10)PPM

   */

  float gasdata = mics.getGasData(H2);

  Serial.print(gasdata,1);

  Serial.println(" PPM");

  delay(1000);

  //mics.sleepMode();

}