SKU_SEN0501_Gravity_Multifunctional_Environmental_Sensor-DFRobot

Introduction

This multifunctional environmental sensor comprises SHTC3 temperature & humidity sensor, BMP280 atmospheric pressure sensor, VEML7700 light sensor, and ultraviolet sensor(V1.0: ML8511, V2.0: LTR390-UV-01) into one and offers 5 kinds of environmental parameters. Professional sensor chips are selected for each kind of parameter measurement. The reasonable layout and heat conduction of the main chip are carefully considered in the circuit design, which effectively guarantees the accuracy of sensor data.

The product has an MCU processing chip onboard that converts the raw sensor data into values with the standard unit so you can directly use them. For example, ℃ and °F for temperature, % for humidity, Kpa for atmospheric pressure, lx for light illuminance, and mw/cm² for ultraviolet.

The environmental sensor supports two communication methods, UART and I2C. There are two versions: Gravity and Fermion(breakout), also complete Arduino and Python libraries are provided.

Exquisite and small, you can use it to make indoor and outdoor environmental monitoring systems, or for your environmental monitoring topics. This DFRobot environmental sensor can greatly simplify the wirings and codes of your project.

Please kindly note that the multifunctional environmental sensor V2.0 utilizes LTR390-UV-01 ultraviolet sensor, while the V1.0 uses the ML8511 sensor.

Features

Application

V1.0

Specification

Atmospheric pressure sensor

Atmospheric pressure unit relationship: 1000pa = 10hpa = 1kpa

Temperature & Humidity Sensor

Ultraviolet Sensor

Ambient light sensor

Dimension

Dimension

Overview

Board Overview

Num Label Description
1 D/T I2C data line SDA/UART data transmission-TX
2 C/R I2C clock line SCL/UART data receiving-RX
3 - GND
4 + Power +

Tutorial

Download the program to DFRuino UNO, open the serial monitor to check various environmental parameters.

Requirements

Read Sensor Data via I2C/UART

Connection for UART and I2C

Connection

UART on the left, I2C on the right.

Switch Communication Mode

About UART/I2C mode switching:

  1. The default mode in the code is UART. Dial the switch to UART side to use it.
  2. For using I2C, dial the switch to I2C side and replace the 1 at the beginning of the code with 0, as shown below:

mode to MODE

Steps:

Note: Different motherboards correspond to different wiring pins (refer to “more wiring diagrams” above). In the Arduino IDE, they also correspond to different motherboard options and different ports (COM). The other steps are the same as DFRuino UNO.

Sample Code

Function: Print all data obtained by the module

/*!
 *@file  read_data.ino
 *@brief This demo shows how to get data of the SEN0500/SEN0501 sensor and outputs data through I2C or UART.
 *@n Print the data returned by SEN0500/SEN0501 in the serial port monitor.
 * @n connected table
 * ---------------------------------------------------------------------------------------------------------------
 *    board   |             MCU                | Leonardo/Mega2560/M0 |    UNO    | ESP8266 | ESP32 |  microbit  |
 *     VCC    |            3.3V/5V             |        VCC           |    VCC    |   VCC   |  VCC  |     X      |
 *     GND    |              GND               |        GND           |    GND    |   GND   |  GND  |     X      |
 *     RX     |              TX                |     Serial1 TX1      |     5     |   5/D6  |  D2   |     X      |
 *     TX     |              RX                |     Serial1 RX1      |     4     |   4/D7  |  D3   |     X      |
 * ---------------------------------------------------------------------------------------------------------------
 * 
 * @copyright   Copyright (c) 2021 DFRobot Co.Ltd (http://www.dfrobot.com)
 * @license     The MIT License (MIT)
 * @author      [TangJie](jie.tang@dfrobot.com)
 * @version     V1.0
 * @date        2021-08-31
 * @url         https://github.com/DFRobot/DFRobot_EnvironmentalSensor
 */
#include "DFRobot_EnvironmentalSensor.h"
#if defined(ARDUINO_AVR_UNO)||defined(ESP8266)
#include <SoftwareSerial.h>
#endif

#define MODESWITCH        /*UART:*/1 /*I2C: 0*/

#if MODESWITCH
#if defined(ARDUINO_AVR_UNO)||defined(ESP8266)
  SoftwareSerial mySerial(/*rx =*/4, /*tx =*/5);
  DFRobot_EnvironmentalSensor environment(/*addr =*/SEN0500/SEN0501_DEFAULT_DEVICE_ADDRESS, /*s =*/&mySerial);
#else
  DFRobot_EnvironmentalSensor environment(/*addr =*/SEN0500/SEN0501_DEFAULT_DEVICE_ADDRESS, /*s =*/&Serial1);
#endif
#else
DFRobot_EnvironmentalSensor environment(/*addr = */SEN0500/SEN0501_DEFAULT_DEVICE_ADDRESS, /*pWire = */&Wire);
#endif
void setup()
{
#if MODESWITCH
  //Init MCU communication serial port
#if defined(ARDUINO_AVR_UNO)||defined(ESP8266)
  mySerial.begin(9600);
#elif defined(ESP32)
  Serial1.begin(9600, SERIAL_8N1, /*rx =*/D3, /*tx =*/D2);
#else
  Serial1.begin(9600);
#endif
#endif
  Serial.begin(115200);
  while(environment.begin() != 0){
    Serial.println(" Sensor initialize failed!!");
    delay(1000);
  }
  Serial.println(" Sensor  initialize success!!");
}

void loop()
{
  //Print the data obtained from sensor
  Serial.println("-------------------------------");
  Serial.print("Temp: ");
  Serial.print(environment.getTemperature(TEMP_C));
  Serial.println(" ℃");
  Serial.print("Temp: ");
  Serial.print(environment.getTemperature(TEMP_F));
  Serial.println(" ℉");
  Serial.print("Humidity: ");
  Serial.print(environment.getHumidity());
  Serial.println(" %");
  Serial.print("Ultraviolet intensity: ");
  Serial.print(environment.getUltravioletIntensity());
  Serial.println(" mw/cm2");
  Serial.print("LuminousIntensity: ");
  Serial.print(environment.getLuminousIntensity());
  Serial.println(" lx");
  Serial.print("Atmospheric pressure: ");
  Serial.print(environment.getAtmospherePressure(HPA));
  Serial.println(" hpa");
  Serial.print("Altitude: ");
  Serial.print(environment.getElevation());
  Serial.println(" m");
  Serial.println("-------------------------------");
  delay(500);
}

Expected Results

The read data will be dipalyed on the serial monitor.

Result

Function Library Name Definition

/**
   * @fn begin
   * @brief Init SEN0500/SEN0501 sensor
   * @return Return init status
   * @retval 0  Succeed
   * @retval -1 failed
   */
  int8_t begin(void);

  /**
   * @fn getTemperature
   * @brief Get SEN0500/SEN0501 temperature data
   * @param units Temperature data unit select
   * @n     TEMP_C ℃
   * @n     TEMP_F ℉ 
   * @return Return the obtained temperature data
   */
  float getTemperature(uint8_t unist);

  /**
   * @fn getHumidity
   * @brief Get SEN0500/SEN0501 humidity data 
   * @return Return the obtained humidity data
   */
  float getHumidity(void);

  /**
   * @fn getUltravioletIntensity
   * @brief Get SEN0500/SEN0501 UV intensity index data 
   * @return Return the obtained UV intensity index data
   */
  float getUltravioletIntensity(void);

  /**
   * @fn getLuminousIntensity
   * @brief Get SEN0500/SEN0501 luminous intensity data 
   * @return Return the obtained luminous intensity data
   */
  float getLuminousIntensity(void);

  /**
   * @fn getAtmospherePressure
   * @brief Get SEN0500/SEN0501 atmosphere pressure data 
   * @param units Atmosphere pressure data unit select
   * @n            HPA: Hectopascal
   * @n            KPA: Kilopascal
   * @return Return the obtained atmosphere pressure data
   */
  uint16_t getAtmospherePressure(uint8_t units);

  /**
   * @fn getElevation
   * @brief Get SEN0500/SEN0501 altitude data 
   * @return Return the obtained altitude data
   */
  float getElevation(void);

V2.0

Specification

Atmospheric pressure sensor

Atmospheric pressure unit relationship: 1000pa = 10hpa = 1kpa

Temperature & Humidity Sensor

Ultraviolet Sensor

Ambient light sensor

Dimension

Dimension V2

Overview

Num Label Description
1 D/T I2C data line SDA/UART data transmission-TX
2 C/R I2C clock line SCL/UART data receiving-RX
3 - GND
4 + Power +

Tutorial

Download the program to DFRuino UNO, open the serial monitor to check various environmental parameters.

Requirements

Read Sensor Data via I2C/UART

Connection for UART and I2C

Connection V2.0

Switch Communication Mode

About UART/I2C mode switching:

  1. The default mode in the code is UART. Dial the switch to UART side to use it.
  2. For using I2C, dial the switch to I2C side and replace the 1 at the beginning of the code with 0, as shown below:

mode to MODE

Steps:

Note: Different motherboards correspond to different wiring pins (refer to “more wiring diagrams” above). In the Arduino IDE, they also correspond to different motherboard options and different ports (COM). The other steps are the same as DFRuino UNO.

Sample Code

Function: Print all data obtained by the module

#include "DFRobot_EnvironmentalSensor.h"
#if defined(ARDUINO_AVR_UNO)||defined(ESP8266)
#include <SoftwareSerial.h>
#endif

#define MODESWITCH        /*UART:*/1 /*I2C: 0*/

#if MODESWITCH
#if defined(ARDUINO_AVR_UNO)||defined(ESP8266)
  SoftwareSerial mySerial(/*rx =*/4, /*tx =*/5);
  DFRobot_EnvironmentalSensor environment(/*addr =*/SEN0500/SEN0501_DEFAULT_DEVICE_ADDRESS, /*s =*/&mySerial);
#else
  DFRobot_EnvironmentalSensor environment(/*addr =*/SEN0500/SEN0501_DEFAULT_DEVICE_ADDRESS, /*s =*/&Serial1);
#endif
#else
DFRobot_EnvironmentalSensor environment(/*addr = */SEN0500/SEN0501_DEFAULT_DEVICE_ADDRESS, /*pWire = */&Wire);
#endif
void setup()
{
#if MODESWITCH
  //Init MCU communication serial port
#if defined(ARDUINO_AVR_UNO)||defined(ESP8266)
  mySerial.begin(9600);
#elif defined(ESP32)
  Serial1.begin(9600, SERIAL_8N1, /*rx =*/D3, /*tx =*/D2);
#else
  Serial1.begin(9600);
#endif
#endif
  Serial.begin(115200);
  while(environment.begin() != 0){
    Serial.println(" Sensor initialize failed!!");
    delay(1000);
  }
  Serial.println(" Sensor  initialize success!!");
}

void loop()
{
  //Print the data obtained from sensor
  Serial.println("-------------------------------");
  Serial.print("Temp: ");
  Serial.print(environment.getTemperature(TEMP_C));
  Serial.println(" ℃");
  Serial.print("Temp: ");
  Serial.print(environment.getTemperature(TEMP_F));
  Serial.println(" ℉");
  Serial.print("Humidity: ");
  Serial.print(environment.getHumidity());
  Serial.println(" %");
  Serial.print("Ultraviolet intensity: ");
  Serial.print(environment.getUltravioletIntensity());
  Serial.println(" mw/cm2");
  Serial.print("LuminousIntensity: ");
  Serial.print(environment.getLuminousIntensity());
  Serial.println(" lx");
  Serial.print("Atmospheric pressure: ");
  Serial.print(environment.getAtmospherePressure(HPA));
  Serial.println(" hpa");
  Serial.print("Altitude: ");
  Serial.print(environment.getElevation());
  Serial.println(" m");
  Serial.println("-------------------------------");
  delay(500);
}

Expected Results

The read data will be dipalyed on the serial monitor.

Result

Function Library Name Definition

/**
   * @fn begin
   * @brief Init SEN0500/SEN0501 sensor
   * @return Return init status
   * @retval 0  Succeed
   * @retval -1 failed
   */
  int8_t begin(void);

  /**
   * @fn getTemperature
   * @brief Get SEN0500/SEN0501 temperature data
   * @param units Temperature data unit select
   * @n     TEMP_C ℃
   * @n     TEMP_F ℉ 
   * @return Return the obtained temperature data
   */
  float getTemperature(uint8_t unist);

  /**
   * @fn getHumidity
   * @brief Get SEN0500/SEN0501 humidity data 
   * @return Return the obtained humidity data
   */
  float getHumidity(void);

  /**
   * @fn getUltravioletIntensity
   * @brief Get SEN0500/SEN0501 UV intensity index data 
   * @return Return the obtained UV intensity index data
   */
  float getUltravioletIntensity(void);

  /**
   * @fn getLuminousIntensity
   * @brief Get SEN0500/SEN0501 luminous intensity data 
   * @return Return the obtained luminous intensity data
   */
  float getLuminousIntensity(void);

  /**
   * @fn getAtmospherePressure
   * @brief Get SEN0500/SEN0501 atmosphere pressure data 
   * @param units Atmosphere pressure data unit select
   * @n            HPA: Hectopascal
   * @n            KPA: Kilopascal
   * @return Return the obtained atmosphere pressure data
   */
  uint16_t getAtmospherePressure(uint8_t units);

  /**
   * @fn getElevation
   * @brief Get SEN0500/SEN0501 altitude data 
   * @return Return the obtained altitude data
   */
  float getElevation(void);

FAQ

For any questions, advice or cool ideas to share, please visit the DFRobot Forum.

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