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    IAQ Accuracy not change - BME680 & BSEC

    Danielms812
    Member

    IAQ Accuracy not change - BME680 & BSEC

    Hi all,

    I'm using the Arduino GitHub repository for use a BME680 sensor with the BSEC software. I'm making the code with VSCode and Platformio with a Zero Arduino board which have a Cortex M0+. Platformio compile the "libalgobsec.a" library without errors.

    The application request a new data every 5 minutes with the "run()" method of the BSEC object. So the configuration have been made with the "generic_18V_300s_4d" file and "BSEC_SAMPLE_RATE_ULP".

    When the program starts, the IAQ accuracy change from 0 to 1 in about 20 minutes but this value (1) remains for more than 15 hours with no change to 2 but sometimes changes to 0. The IAQ value changes between 25 and 250.

    I tried made the application with 3 seconds sample option and the result is that it does change but the 3 IAQ accuracy value is continusly changes with accuracy 2.

    I share my code in case there is something wrong. Attach the IAQ and IAQ accuracy data too. The time that you will see it's the time of the sent to a server but the "tick2()" function of the code is executed every 300 seconds with +-5 ms of error.

    Appreciate any help.

    Thanks.

     

    Bsec iaqSensor;
    
    String output;
    
    uint8_t bsecState[BSEC_MAX_STATE_BLOB_SIZE] = {0};
    uint16_t stateUpdateCounter = 0;
    
    const uint8_t bsec_config_iaq[] = {
    #include "config/generic_18v_300s_4d/bsec_iaq.txt"
    };
    
    void checkIaqSensorStatus(void) {
      if (iaqSensor.status != BSEC_OK) {
        if (iaqSensor.status < BSEC_OK) {
          output = "BSEC error code : " + String(iaqSensor.status);
          RH_UART_DEBUG.println(output);
          _delay::s(1);
          // for (;;) errLeds(); /* Halt in case of failure */
        } else {
          output = "BSEC warning code : " + String(iaqSensor.status);
          RH_UART_DEBUG.println(output);
        }
      }
    
      if (iaqSensor.bme680Status != BME680_OK) {
        if (iaqSensor.bme680Status < BME680_OK) {
          output = "BME680 error code : " + String(iaqSensor.bme680Status);
          RH_UART_DEBUG.println(output);
          _delay::s(1);
          // for (;;) errLeds();  // Halt in case of failure
        } else {
          output = "BME680 warning code : " + String(iaqSensor.bme680Status);
          RH_UART_DEBUG.println(output);
          _delay::s(1);
        }
      }
    }
    
    void loadState(void) {
      if (EEPROM.read(0) == BSEC_MAX_STATE_BLOB_SIZE) {
        // Existing state in EEPROM
        Serial.println("Reading state from EEPROM");
    
        for (uint8_t i = 0; i < BSEC_MAX_STATE_BLOB_SIZE; i++) {
          bsecState[i] = EEPROM.read(i + 1);
          Serial.println(bsecState[i], HEX);
        }
    
        iaqSensor.setState(bsecState);
        checkIaqSensorStatus();
      } else {
        // Erase the EEPROM with zeroes
        Serial.println("Erasing EEPROM");
    
        for (uint8_t i = 0; i < BSEC_MAX_STATE_BLOB_SIZE + 1; i++)
          EEPROM.write(i, 0);
    
        EEPROM.commit();
      }
    }
    
    void updateState(void) {
      bool update = false;
      /* Set a trigger to save the state. Here, the state is saved every
       * STATE_SAVE_PERIOD with the first state being saved once the algorithm
       * achieves full calibration, i.e. iaqAccuracy = 3 */
      if (stateUpdateCounter == 0) {
        if (iaqSensor.iaqAccuracy >= 3) {
          update = true;
          stateUpdateCounter++;
        }
      } else {
        /* Update every STATE_SAVE_PERIOD milliseconds */
        if ((stateUpdateCounter * STATE_SAVE_PERIOD) < millis()) {
          update = true;
          stateUpdateCounter++;
        }
      }
    
      if (update) {
        iaqSensor.getState(bsecState);
        checkIaqSensorStatus();
    
        Serial.println("Writing state to EEPROM");
    
        for (uint8_t i = 0; i < BSEC_MAX_STATE_BLOB_SIZE; i++) {
          EEPROM.write(i + 1, bsecState[i]);
          Serial.println(bsecState[i], HEX);
        }
    
        EEPROM.write(0, BSEC_MAX_STATE_BLOB_SIZE);
        EEPROM.commit();
      }
    }
    uint8_t tick2(uint8_t param) {
      echo::info(F("ESTAMOS EN TICK2"));
      unsigned long time_trigger = millis();
      if (iaqSensor.run()) {  // If new data is available
        output = String(time_trigger);
        output += ", " + String(iaqSensor.rawTemperature);
        output += ", " + String(iaqSensor.pressure);
        output += ", " + String(iaqSensor.rawHumidity);
        output += ", " + String(iaqSensor.gasResistance);
        output += ", " + String(iaqSensor.iaq);
        output += ", " + String(iaqSensor.iaqAccuracy);
        output += ", " + String(iaqSensor.temperature);
        output += ", " + String(iaqSensor.humidity);
        output += ", " + String(iaqSensor.staticIaq);
        output += ", " + String(iaqSensor.co2Equivalent);
        output += ", " + String(iaqSensor.breathVocEquivalent);
        RH_UART_DEBUG.println(output);
      } else {
        checkIaqSensorStatus();
      }
      uint8_t err = puf::emit(EV_TICK1, 0);
      if (err > 0) {
        echo::error("Transmit error");
        echo::info("Triying transmit again");
      }
      return 0;
    }
    
    void errLeds(void) {
      pinMode(LED_BUILTIN, OUTPUT);
      digitalWrite(LED_BUILTIN, HIGH);
      delay(100);
      digitalWrite(LED_BUILTIN, LOW);
      delay(100);
    }
    uint8_t init(uint8_t param) {
      char version[50];
    
      // EEPROM.init(); // 1st address for the length
      Wire.begin();
      // Intialition BSEC object with I2C address. To select the other address:
      // BME680_I2C_ADDR_SECONDARY
      iaqSensor.begin(SENS_BME680_ADDRESS, Wire);
      sprintf(version, "BSEC library version %u.%u.%u.%u", iaqSensor.version.major,
              iaqSensor.version.minor, iaqSensor.version.major_bugfix,
              iaqSensor.version.minor_bugfix);
      Serial.println(version);
    
      checkIaqSensorStatus();
    
      iaqSensor.setConfig(bsec_config_iaq);
      checkIaqSensorStatus();
    
      loadState();
    
      checkIaqSensorStatus();
    
      bsec_virtual_sensor_t sensorList[10] = {
          BSEC_OUTPUT_RAW_TEMPERATURE,
          BSEC_OUTPUT_RAW_PRESSURE,
          BSEC_OUTPUT_RAW_HUMIDITY,
          BSEC_OUTPUT_RAW_GAS,
          BSEC_OUTPUT_IAQ,
          BSEC_OUTPUT_STATIC_IAQ,
          BSEC_OUTPUT_CO2_EQUIVALENT,
          BSEC_OUTPUT_BREATH_VOC_EQUIVALENT,
          BSEC_OUTPUT_SENSOR_HEAT_COMPENSATED_TEMPERATURE,
          BSEC_OUTPUT_SENSOR_HEAT_COMPENSATED_HUMIDITY,
      };
    
      // Sets desired sensors and sample rate (more sample rates:
      // bsec_datatypes.h)
      iaqSensor.updateSubscription(sensorList, 10, BSEC_SAMPLE_RATE_ULP);
      checkIaqSensorStatus();
    
       return 0;
    }

     

     OUTPUT

    DATE                                   IAQ       IAQ Accuracy

     

    26-05-21 08:44:09	132.98	1
    26-05-21 08:39:14	122.24	1
    26-05-21 08:34:09	117.59	1
    26-05-21 08:29:09	143.09	1
    26-05-21 08:24:09	140.65	1
    26-05-21 08:19:09	125.13	1
    26-05-21 08:14:09	132.42	1
    26-05-21 08:09:09	117.78	1
    26-05-21 08:04:11	109.59	1
    26-05-21 07:59:09	134.84	1
    26-05-21 07:54:09	139.30	1
    26-05-21 07:49:09	140.31	1
    26-05-21 07:44:10	135.23	1
    26-05-21 07:39:11	146.98	1
    26-05-21 07:34:09	143.59	1
    26-05-21 07:29:10	153.56	1
    26-05-21 07:24:22	161.00	1
    26-05-21 07:14:20	194.04	1
    26-05-21 07:09:10	157.41	1
    26-05-21 07:04:15	123.45	1
    26-05-21 06:59:10	130.16	1
    26-05-21 06:54:10	112.98	1
    26-05-21 06:49:13	104.60	1
    26-05-21 06:44:10	123.72	1
    26-05-21 06:39:10	198.72	1
    26-05-21 06:34:10	250.00	1
    26-05-21 06:29:10	116.85	1
    26-05-21 06:24:12	58.17	1
    26-05-21 06:19:10	25.00	1
    26-05-21 06:14:10	27.24	1
    26-05-21 06:09:10	25.00	1
    26-05-21 06:04:11	41.72	1
    26-05-21 05:59:11	31.74	1
    26-05-21 05:54:11	36.14	1
    26-05-21 05:49:11	25.00	1
    26-05-21 05:44:11	25.00	1
    26-05-21 05:39:12	31.13	1
    26-05-21 05:29:12	26.79	1
    26-05-21 05:24:11	35.00	1
    26-05-21 05:19:11	31.57	1
    26-05-21 05:14:11	40.31	1
    26-05-21 05:09:11	34.98	1
    26-05-21 05:04:12	42.42	1
    26-05-21 04:59:11	32.36	1
    26-05-21 04:54:12	28.37	1
    26-05-21 04:49:12	32.42	1
    26-05-21 04:44:12	36.08	1
    26-05-21 04:39:12	43.79	1
    26-05-21 04:34:16	44.10	1
    26-05-21 04:29:12	47.42	1
    26-05-21 04:24:12	44.60	0
    26-05-21 04:19:16	44.30	0
    26-05-21 04:14:12	40.25	0
    26-05-21 04:09:12	35.63	0
    26-05-21 04:04:11	35.63	1
    26-05-21 03:59:17	35.63	1
    26-05-21 03:54:12	32.11	1
    26-05-21 03:49:12	35.29	1
    26-05-21 03:44:13	33.24	1
    26-05-21 03:39:13	31.95	1
    26-05-21 03:34:13	32.72	1
    26-05-21 03:29:13	36.49	1
    26-05-21 03:24:13	28.15	1
    26-05-21 03:19:13	25.00	1
    26-05-21 03:14:13	31.66	1
    26-05-21 03:09:13	34.12	1
    26-05-21 03:04:18	32.28	1
    26-05-21 02:59:13	25.00	1
    26-05-21 02:54:13	32.15	1
    26-05-21 02:49:14	30.64	1
    26-05-21 02:44:14	28.42	1
    26-05-21 02:39:14	31.26	1
    26-05-21 02:34:14	34.94	1
    26-05-21 02:29:14	34.26	1
    26-05-21 02:24:14	26.35	1
    26-05-21 02:19:14	34.41	1
    26-05-21 02:14:14	25.00	1
    26-05-21 02:09:14	25.00	1
    26-05-21 02:04:15	25.00	1
    26-05-21 01:59:14	25.00	1
    26-05-21 01:54:14	35.23	1
    26-05-21 01:39:14	37.73	0
    26-05-21 01:29:14	31.31	0
    26-05-21 01:24:14	26.30	0
    26-05-21 01:19:12	26.30	1
    26-05-21 01:14:18	26.30	1
    26-05-21 01:09:14	27.23	1
    26-05-21 01:04:14	27.49	1
    26-05-21 00:59:14	35.74	1
    26-05-21 00:54:14	39.14	1
    26-05-21 00:49:15	39.07	0
    26-05-21 00:44:14	37.07	0
    26-05-21 00:39:14	33.94	0
    26-05-21 00:34:14	28.27	0
    26-05-21 00:29:12	28.27	1
    26-05-21 00:24:14	28.27	1
    26-05-21 00:19:14	29.39	1
    26-05-21 00:14:14	28.47	1
    26-05-21 00:09:14	41.25	1
    26-05-21 00:04:15	36.47	1
    25-05-21 23:59:14	38.69	1
    25-05-21 23:54:15	45.62	1
    25-05-21 23:49:15	42.16	1
    25-05-21 23:39:15	25.00	1
    25-05-21 23:34:15	32.23	1
    25-05-21 23:29:15	30.52	1
    25-05-21 23:24:15	34.94	1
    25-05-21 23:19:15	25.33	1
    25-05-21 23:14:15	32.41	1
    25-05-21 23:09:15	33.12	1
    25-05-21 23:04:15	29.70	1
    25-05-21 22:59:15	42.86	1
    25-05-21 22:54:15	37.36	1
    25-05-21 22:49:16	30.35	1
    25-05-21 22:44:15	32.19	1
    25-05-21 22:39:15	36.44	1
    25-05-21 22:34:15	36.63	1
    25-05-21 22:29:15	33.75	1
    25-05-21 22:24:15	25.00	1
    25-05-21 22:19:15	28.77	1
    25-05-21 22:14:15	29.84	1
    25-05-21 22:09:15	25.00	1
    25-05-21 22:04:16	27.60	1
    25-05-21 21:59:16	27.63	1
    25-05-21 21:54:16	38.21	1
    25-05-21 21:49:16	25.27	1
    25-05-21 21:44:16	28.15	1
    25-05-21 21:39:16	27.38	1
    25-05-21 21:34:16	34.76	1
    25-05-21 21:29:16	25.00	1
    25-05-21 21:24:16	30.44	1
    25-05-21 21:19:16	25.00	1
    25-05-21 21:14:16	29.70	1
    25-05-21 21:09:16	25.00	1
    25-05-21 21:04:16	25.00	1
    25-05-21 20:59:16	25.86	1
    25-05-21 20:54:16	31.16	1
    25-05-21 20:49:16	31.88	1
    25-05-21 20:44:16	28.02	1
    25-05-21 20:39:16	33.85	1
    25-05-21 20:34:16	33.81	1
    25-05-21 20:29:16	30.25	1
    25-05-21 20:24:16	39.24	1
    25-05-21 20:19:16	36.08	1
    25-05-21 20:14:16	37.51	1
    25-05-21 20:09:16	35.12	1
    25-05-21 20:04:16	35.00	1
    25-05-21 19:59:16	38.24	1
    25-05-21 19:54:17	25.00	1
    25-05-21 19:49:17	30.88	1
    25-05-21 19:44:17	25.00	1
    25-05-21 19:39:17	31.32	1
    25-05-21 19:34:17	30.47	1
    25-05-21 19:29:17	28.03	1
    25-05-21 19:24:17	42.23	1
    25-05-21 19:19:17	43.23	1
    25-05-21 19:14:17	34.38	1
    25-05-21 19:09:17	25.00	1
    25-05-21 19:04:17	25.58	1
    25-05-21 18:59:17	33.94	1
    25-05-21 18:54:17	39.03	1
    25-05-21 18:49:17	48.12	1
    25-05-21 18:44:17	46.22	1
    25-05-21 18:39:17	41.82	1
    25-05-21 18:34:17	45.60	1
    25-05-21 18:29:17	59.27	1
    25-05-21 18:24:17	48.42	1
    25-05-21 18:19:17	48.02	1
    25-05-21 18:14:17	52.64	1
    25-05-21 18:09:17	57.17	1
    25-05-21 18:04:17	66.58	1
    25-05-21 17:59:17	58.61	1
    25-05-21 17:54:17	54.61	1
    25-05-21 17:49:17	60.27	1
    25-05-21 17:44:18	62.77	1
    25-05-21 17:39:18	61.92	1
    25-05-21 17:34:18	61.45	1
    25-05-21 17:29:18	62.07	1
    25-05-21 17:24:18	57.92	1
    25-05-21 17:19:18	70.62	1
    25-05-21 17:14:18	74.72	1
    25-05-21 17:09:18	63.66	1
    25-05-21 17:04:18	62.11	1
    25-05-21 16:59:18	59.77	1
    25-05-21 16:54:18	46.66	1
    25-05-21 16:49:18	61.05	1
    25-05-21 16:44:18	75.51	1
    25-05-21 16:39:18	55.58	1
    25-05-21 16:34:18	81.29	1
    25-05-21 16:29:18	83.64	1
    25-05-21 16:24:18	81.89	1
    25-05-21 16:19:18	79.78	1
    25-05-21 16:14:19	79.15	1
    25-05-21 16:09:19	115.93	1
    25-05-21 16:04:19	86.37	1
    25-05-21 15:59:19	64.15	1
    25-05-21 15:54:19	87.72	1
    25-05-21 15:49:19	63.15	1
    25-05-21 15:44:19	39.39	1
    25-05-21 15:39:19	36.35	1
    25-05-21 15:34:19	43.48	1
    25-05-21 15:29:19	25.00	1
    25-05-21 15:24:19	38.36	1
    25-05-21 15:19:19	25.00	1
    25-05-21 15:14:19	25.00	1
    25-05-21 15:09:19	25.00	0
    25-05-21 15:04:19	25.00	0
    25-05-21 14:59:19	25.00	0
    25-05-21 14:54:20	25.00	0
    25-05-21 14:49:18	25.00	0
    25-05-21 14:44:20	25.00	0

     

     

     

    4 REPLIES 4
    BSTRobin
    Community Moderator

    Re: IAQ Accuracy not change - BME680 & BSEC

    Hello Danielms812,

    If you use a new chip, it will take an hour to initialize the chip in ULP mode; It could be got the trusted IAQ value After 1 day.

    It is recommended to test it with several devices.
    From your timestamp log, it's not continuous. Can you check it?

    Danielms812
    Member

    Re: IAQ Accuracy not change - BME680 & BSEC

    Hello BSTRobin, thanks for the answer.

    I'm using a CJMCU-680 module. I don't know if it's a new chip. Anyway, the sensor has been in operation for more than three days. Obviously, I can't post all data.

    I've noticed that putting the sensor in a bad enviroment it only takes a few minutes for reach 2 IAQ accuracy value and then 3. But when the sensor is left back in the first environment after a while, it return to 2 and then 1 of accuracy and sometimes directly from 3 to 1. I supposed that it's a "trick" for achieve a trusted IAQ value in less time, but it isn't a good solution for me.

    The timestamp log, as I said in the first post, it's the time the value have been sent to a server, but the BME680 "run()" function in the program, is called every 300 seconds with some miliseconds of error (10 maximum). I know it because I can see the timestamp in the serial monitor. In order to improve this, what is the maximum error that is permited ?

    And what did you mean with "test with severeal devices". Several BME680 or several MCU. For this time, I only have one BME680.

    The data I'll share you is a part of the last 4 days in which it can be seen the change from 3 to 1. Now almost 3 days later it still continues to present a 1 IAQ accuracy value.

    What are you thinking is the problem ?

    Thank you.

    Daniel.

     

    Danielms812
    Member

    Re: IAQ Accuracy not change - BME680 & BSEC

    Change from 3 to 1.
    
    29-05-21 01:12:40	1	33.65
    29-05-21 01:07:39	1	27.30
    29-05-21 01:02:38	1	25.00
    29-05-21 00:57:37	1	32.12
    29-05-21 00:52:36	1	35.52
    29-05-21 00:47:35	1	29.86
    29-05-21 00:42:34	1	34.70
    29-05-21 00:37:33	1	32.14
    29-05-21 00:32:32	1	25.00
    29-05-21 00:27:32	1	25.00
    29-05-21 00:22:31	1	31.14
    29-05-21 00:17:30	1	28.90
    29-05-21 00:12:29	1	31.91
    29-05-21 00:07:28	1	27.77
    29-05-21 00:02:27	1	38.33
    28-05-21 23:57:26	1	36.84
    28-05-21 23:52:25	1	25.00
    28-05-21 23:47:24	1	25.00
    28-05-21 23:42:23	1	31.76
    28-05-21 23:37:22	1	35.06
    28-05-21 23:32:21	1	25.65
    28-05-21 23:27:20	1	25.00
    28-05-21 23:22:19	1	25.00
    28-05-21 23:17:18	1	25.00
    28-05-21 23:12:18	1	34.97
    28-05-21 23:07:17	1	28.63
    28-05-21 23:02:16	1	30.65
    28-05-21 22:57:15	1	27.40
    28-05-21 22:52:14	1	31.90
    28-05-21 22:47:13	1	31.93
    28-05-21 22:42:12	1	32.88
    28-05-21 22:37:11	1	36.58
    28-05-21 22:32:10	1	35.37
    28-05-21 22:27:09	1	41.40
    28-05-21 22:22:08	1	35.30
    28-05-21 22:17:07	1	34.70
    28-05-21 22:12:06	1	36.88
    28-05-21 22:07:05	1	38.08
    28-05-21 22:02:04	1	42.39
    28-05-21 21:57:03	1	41.37
    28-05-21 21:52:02	1	43.67
    28-05-21 21:47:02	1	45.11
    28-05-21 21:42:01	1	43.49
    28-05-21 21:37:00	1	46.24
    28-05-21 21:31:59	1	53.63
    28-05-21 21:26:58	1	46.33
    28-05-21 21:21:57	1	48.53
    28-05-21 21:16:56	1	45.66
    28-05-21 21:11:55	3	49.40
    28-05-21 21:06:54	3	45.84
    28-05-21 21:01:53	3	49.81
    28-05-21 20:56:52	3	51.18
    28-05-21 20:51:51	3	50.64
    28-05-21 20:46:50	3	49.17
    28-05-21 20:41:49	3	47.96
    28-05-21 20:36:49	3	52.12
    28-05-21 20:31:48	3	53.70
    28-05-21 20:26:47	3	53.68
    28-05-21 20:21:46	3	45.43
    28-05-21 20:16:45	3	44.14
    28-05-21 20:11:44	3	49.75
    28-05-21 20:06:43	3	47.44
    28-05-21 20:01:42	3	58.91
    28-05-21 19:56:41	3	60.31
    28-05-21 19:51:40	3	57.87
    28-05-21 19:46:39	3	56.89
    28-05-21 19:41:38	3	62.99
    28-05-21 19:36:37	3	54.79
    28-05-21 19:31:37	3	57.46
    28-05-21 19:26:36	3	56.22
    28-05-21 19:21:35	3	57.26
    28-05-21 19:16:34	3	63.37
    28-05-21 19:11:33	3	65.17
    28-05-21 19:06:32	3	65.87
    28-05-21 19:01:31	3	65.46
    28-05-21 18:56:30	3	62.74
    28-05-21 18:51:29	3	63.39
    28-05-21 18:46:28	3	65.72
    28-05-21 18:41:27	3	67.93
    28-05-21 18:36:26	3	60.22
    28-05-21 18:31:25	3	70.48
    28-05-21 18:26:24	3	77.66
    28-05-21 18:21:24	3	75.87
    28-05-21 18:16:23	3	80.97
    28-05-21 18:11:22	3	72.79
    28-05-21 18:06:21	3	88.90
    Changing between 3 and 2 IAQ accuracy.
    
    28-05-21 08:34:35	3	59.08
    28-05-21 08:29:34	3	62.60
    28-05-21 08:24:33	3	60.40
    28-05-21 08:19:32	3	58.06
    28-05-21 08:14:31	3	57.85
    28-05-21 08:09:31	3	60.50
    28-05-21 08:04:30	3	51.70
    28-05-21 07:59:29	3	47.15
    28-05-21 07:54:28	3	50.42
    28-05-21 07:49:27	3	43.34
    28-05-21 07:44:26	3	44.12
    28-05-21 07:39:25	3	41.96
    28-05-21 07:34:24	3	37.36
    28-05-21 07:29:23	2	27.02
    28-05-21 07:24:22	2	25.00
    28-05-21 07:19:21	3	27.26
    28-05-21 07:14:20	3	29.26
    28-05-21 07:09:19	3	26.40
    28-05-21 07:04:18	2	27.04
    28-05-21 06:59:17	2	25.00
    28-05-21 06:54:16	2	25.00
    28-05-21 06:49:15	2	25.00
    28-05-21 06:44:15	2	25.00
    28-05-21 06:39:14	2	25.00
    28-05-21 06:34:13	2	25.00
    28-05-21 06:29:12	2	25.00
    28-05-21 06:24:11	3	26.15
    28-05-21 06:19:10	3	29.30
    28-05-21 06:14:09	3	30.71
    28-05-21 06:09:08	2	31.23
    28-05-21 06:04:07	2	25.00
    28-05-21 05:59:06	3	32.92
    28-05-21 05:54:05	3	28.13
    28-05-21 05:49:04	3	29.13
    28-05-21 05:44:03	3	26.67
    28-05-21 05:39:02	3	25.94
    28-05-21 05:34:01	2	30.36
    28-05-21 05:29:00	2	25.00
    28-05-21 05:23:59	2	25.00
    28-05-21 05:18:58	2	25.00
    28-05-21 05:13:58	3	25.43
    28-05-21 05:08:57	3	26.46
    28-05-21 05:03:56	3	25.53
    28-05-21 04:58:55	2	25.28
    28-05-21 04:53:54	2	25.00
    28-05-21 04:48:53	3	28.87
    28-05-21 04:43:52	3	29.52
    28-05-21 04:38:51	2	31.14
    28-05-21 04:33:50	2	25.00
    28-05-21 04:28:49	3	30.36
    28-05-21 04:23:48	2	30.97
    28-05-21 04:18:47	2	25.00
    28-05-21 04:13:46	3	28.29
    28-05-21 04:08:45	3	29.03
    28-05-21 04:03:45	3	28.71
    28-05-21 03:58:44	2	27.04
    28-05-21 03:53:43	2	25.00
    28-05-21 03:48:42	3	26.06
    28-05-21 03:43:41	3	28.29
    28-05-21 03:38:40	3	26.25
    28-05-21 03:33:39	3	27.01
    28-05-21 03:28:38	3	28.95
    28-05-21 03:23:37	3	29.36
    28-05-21 03:18:36	3	30.54
    28-05-21 03:13:35	3	31.43
    28-05-21 03:08:34	3	32.39
    28-05-21 03:03:33	2	32.74
    28-05-21 02:58:32	2	25.00
    28-05-21 02:53:31	2	28.41
    28-05-21 02:48:31	2	25.00
    28-05-21 02:43:30	3	28.89
    28-05-21 02:38:29	3	29.71
    28-05-21 02:33:28	3	28.00
    28-05-21 02:28:27	3	29.03
    28-05-21 02:23:26	3	26.71
    28-05-21 02:18:25	3	25.51
    BSTRobin
    Community Moderator

    Re: IAQ Accuracy not change - BME680 & BSEC

    Hello Danielms812,

    "test with several devices" means several sets of equipment, one set of equipment contains a MCU and bme680, and each set of software runs the same software, test at same time, same environment.

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