Cjmcu 8128 Weather Sensor Module Carbon Dioxide Temperature And Humidity Height Three In One Sensor

SPECIFICATIONS:

-factory calibrated.

-The relative humidity is 2% (typical)

-Temperature accuracy of + 0.2 C (typical)

-Excellent stability under high humidity

-14 bit resolution

-Sleep mode current is 100nA

OVERVIEW:

-HDC1080 low power consumption, high precision digital humidity sensor with temperature sensor

-DC1080 is a digital temperature sensor with integrated temperature sensor, which can provide excellent measurement accuracy with ultra-low power consumption.

-HDC1080 supports a wide range of operating power supply voltage, and compared to competitive solutions, the device can provide a wide range of common applications with low cost and low power consumption advantages.

-Humidity and temperature sensors are factory calibrated.

-The relative humidity is 2% (typical)

-Temperature accuracy of + 0.2 C (typical)

-Excellent stability under high humidity

-14 bit resolution

-Sleep mode current is 100nA

-BMP280 is an absolute pressure sensor designed specifically for mobile applications.

-The sensor module is housed in a very compact package.

-Its small size and low power consumption allow the implementation of such devices in battery powered mobile phones, GPS modules or watches.

PACKAGE INCLUDES:

1 PCS x Cjmcu 8128 Weather Sensor Module Carbon Dioxide Temperature And Humidity Height Three In One Sensor

https://www.bosch-sensortec.com/products/environmental-sensors/pressure-sensors/pressure-sensors-bmp280-1.html

https://www.ti.com/product/HDC1080?qgpn=hdc1080

https://ams.com/-/new-environmental-sensor-kits-from-ams-enable-easy-prototyping-of-indoor-air-quality-monitoring-systems

//SOURCE CODE FROM BELOW LINK

//https://github.com/SFeli/ESP32_CJMCU-8128/blob/master/ESP32_CJMCU_8128_00.ino

/* ESP32

    Sensor CJMCU-8128 mit:

    CCS811 -> 0x5A !!!

      bool begin()

      bool start(mode)

      read(eco2, etvoc, errstat, raw)

      int hardware_version()

      int bootloader_version()

      int application_version()

      int get_errorid()

      bool set_envdate(t,h)

      bool set_envdata210(t,h)

      bool get_baseline(baseline)

      bool set_baseline(baseline)

      bool flash(image, size)

      set_i2cdelay(us)

      get_i2cdelay(us)

      wake_init()

      wake_up()

      wake_down()

    SI7021 -> 0x40

      float readHumidity()

      float readTemperature()

      _readRevision

      readSerialNumber()

      reset()

    BMP280 -> 0x76

      bool (begin(addr)

      setSampling(mode)

      readCoefficients()

      float readTemperature()

      float readPressure()

      float readAltitude(seaLevelhPa)

      float seaLevelForAltitude

      takeForcedMeasurement()

*/

#include <Arduino.h>

#include "ccs811.h"                     // include library for CCS811 - Sensor from martin-pennings https://github.com/maarten-pennings/CCS811

#include "Adafruit_Si7021.h"            // include main library for SI7021 - Sensor

#include "Adafruit_BMP280.h"            // include main library for BMP280 - Sensor

#include <Wire.h>                       // This library allows you to communicate with I2C

CCS811 ccs811;

Adafruit_BMP280 bmp280;                // I2C

Adafruit_Si7021 SI702x = Adafruit_Si7021();

void setup() {

//  Serial.begin(9600);

  Serial.begin();

  // Enable I2C

  Wire.begin(21,22);                  // put here the Pins of I2C

  Serial.println("CCS811 test");      /* --- SETUP CCS811 on 0x5A ------ */

  ccs811.set_i2cdelay(50); // Needed for ESP8266 because it doesn't handle I2C clock stretch correctly

  if (!ccs811.begin()) {

    Serial.println("Failed to start sensor! Please check your wiring.");

    while (true);

  }

  // Print CCS811 versions

  Serial.print("setup: hardware    version: "); Serial.println(ccs811.hardware_version(), HEX);

  Serial.print("setup: bootloader  version: "); Serial.println(ccs811.bootloader_version(), HEX);

  Serial.print("setup: application version: "); Serial.println(ccs811.application_version(), HEX);

  // Start measuring

  bool ok = ccs811.start(CCS811_MODE_1SEC);

  if ( !ok ) Serial.println("setup: CCS811 start FAILED");

  Serial.println("BMP280 test");     /* --- SETUP BMP on 0x76 ------ */

  if (!bmp280.begin(0x76)) {

    Serial.println("Could not find a valid BMP280 sensor, check wiring!");

    while (true);

  }

  Serial.println("Si7021 test!");     /* ---- SETUP SI702x ----- */

  if (!SI702x.begin()) {

    Serial.println("Did not find Si702x sensor!");

    while (true);

  }

  Serial.print("Found model ");

  switch (SI702x.getModel()) {

    case SI_Engineering_Samples:

      Serial.print("SI engineering samples"); break;

    case SI_7013:

      Serial.print("Si7013"); break;

    case SI_7020:

      Serial.print("Si7020"); break;

    case SI_7021:

      Serial.print("Si7021"); break;

    case SI_UNKNOWN:

    default:

      Serial.print("Unknown");

  }

  Serial.print(" Revision(");

  Serial.print(SI702x.getRevision());

  Serial.print(")");

  Serial.print(" Serial #"); Serial.print(SI702x.sernum_a, HEX); Serial.println(SI702x.sernum_b, HEX);

}

void loop() {

  Serial.print("BMP280 => Temperature = ");

  Serial.print(bmp280.readTemperature());

  Serial.print(" °C, ");

  Serial.print("Pressure = ");

  Serial.print(bmp280.readPressure() / 100);

  Serial.println(" Pa, ");

  Serial.print("SI702x => Temperature = ");

  Serial.print(SI702x.readTemperature(), 2);

  Serial.print(" °C, ");

  Serial.print("Humidity = ");

  Serial.println(SI702x.readHumidity(), 2);

  uint16_t eco2, etvoc, errstat, raw;     // Read CCS811

  ccs811.set_envdata(bmp280.readTemperature(), SI702x.readHumidity());

  ccs811.read(&eco2, &etvoc, &errstat, &raw);

  if ( errstat == CCS811_ERRSTAT_OK ) {

    Serial.print("CCS811 => CO2 = ");

    Serial.print(eco2);

    Serial.print("ppm, TVOC = ");

    Serial.println(etvoc);

  }

  delay(5000);

}

15 days