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Wemos SHT30 readings on an OLED example

by shedboy71
written by shedboy71

Another example of connecting Wemos shields and modules together, this time we will use an SHT30 shield instead of the DHT shield we used in a previous example

Wemos Dual Base shield – a basic shield for connecting other shields and modules

Wemos D1 Mini : the basic ESP8266 module – there are 3 variants of this board

Wemos OLED shield : a 64×48 I2C OLED display which can display a few lines of text

Wemos SHT30 shield : an I2C digital temperature and humidity sensor based on the SHT30

 

Code

2 libraries needed for this example again

https://github.com/mcauser/Adafruit_SSD1306/tree/esp8266-64×48

https://github.com/wemos/WEMOS_SHT3x_Arduino_Library

[codesyntax lang=”cpp”]

#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <WEMOS_SHT3X.h>

#define OLED_RESET 0  // GPIO0
Adafruit_SSD1306 display(OLED_RESET);

SHT3X sht30(0x45);

void setup() 
{
  display.begin(SSD1306_SWITCHCAPVCC, 0x3C);
}

void loop() {
  
  // Clear the buffer.
  display.clearDisplay();
  display.setTextSize(1);
  display.setCursor(0, 0);
  display.setTextColor(WHITE);

  if(sht30.get()==0)
  {
    display.println("T: ");
    display.println(sht30.cTemp);
    display.println("H: ");
    display.println(sht30.humidity);
  }
  else
  {
    display.println("Error!");
  }
  display.display();
  delay(1000);
}

[/codesyntax]

 

Run this example and you will see the temperature and humidity displayed on the OLED display

Links

OLED Shield for WeMos D1 mini 0.66″ inch 64X48 IIC I2C for Compatible

Double Socket Dual Base Shield For WeMos D1 Mini NodeMCU For Arduino ESP8266 Development Board

WEMOS D1 Mini Pro – 16M Bytes External Antenna Connector ESP8266 WIFI IoT Board

SHT30 Shield For WeMos D1 mini SHT30 I2C Digital Temperature and Humidity Sensor Module

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ESP8266

A basic wemos temperature on OLED display example

by shedboy71
written by shedboy71

In this example we show how to connect multiple Wemos shields together to form more complex projects, in this example I use 4 shields. You can see a list of the shields and modules used below

Wemos Dual Base shield – a basic shield for connecting other shields and modules

Wemos D1 Mini : the basic ESP8266 module – there are 3 variants of this board

Wemos OLED shield : a 64×48 I2C OLED display which can display a few lines of text

Wemos DHT shield : a digital temperature and humidity sensor based on the DHT12 sensor

 

Code

2 libraries needed for this example

https://github.com/mcauser/Adafruit_SSD1306/tree/esp8266-64×48

https://github.com/wemos/WEMOS_DHT12_Arduino_Library

[codesyntax lang=”cpp”]

#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <WEMOS_DHT12.h>

#define OLED_RESET 0  // GPIO0
Adafruit_SSD1306 display(OLED_RESET);

DHT12 dht12;

void setup() 
{
  display.begin(SSD1306_SWITCHCAPVCC, 0x3C);
}

void loop() {
  
  // Clear the buffer.
  display.clearDisplay();
  display.setTextSize(1);
  display.setCursor(0, 0);
  display.setTextColor(WHITE);

  if(dht12.get()==0){
    display.println("T: ");
    display.println(dht12.cTemp);
    display.println("H: ");
    display.println(dht12.humidity);
  }
  else
  {
    display.println("Error!");
  }
  display.display();
  delay(1000);

}

[/codesyntax]

Run this example and you will see the temperature and humidity displayed on the OLED display

Links

OLED Shield for WeMos D1 mini 0.66″ inch 64X48 IIC I2C for Compatible

Double Socket Dual Base Shield For WeMos D1 Mini NodeMCU For Arduino ESP8266 Development Board

WEMOS D1 Mini Pro – 16M Bytes External Antenna Connector ESP8266 WIFI IoT Board

DHT-Shield

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ESP8266

Wemos DHT 12 shield example

by shedboy71
written by shedboy71
DHT12 digital temperature and humidity sensor is a calibration with the digital signal output temperature and humidity sensor, DHT11 upgrade products. It uses a dedicated digital module acquisition technology and semiconductor temperature and humidity sensors to ensure that the product has a high reliability and excellent long-term stability. DHT12 has a single bus and standard I2C two kinds of communication, and single bus communication is fully compatible with DHT11.
Standard single bus interface, the system integration has become simple and quick. With ultra-small size, low power consumption, suitable for a variety of applications. I2C communication using standard communication timing, the user can be directly linked to the I2C communication bus, no additional wiring, easy to use.
Two kinds of communication methods are free to switch, the user is free to choose, easy to use, should be a wide range of areas. Products for the 4-lead, easy to connect, special package can be provided in accordance with user needs.

the application of HVAC, dehumidifiers, testing and testing equipment, consumer goods, automatic control, data loggers, weather stations, home appliances, humidity control, medical and other related humidity detection control.
the product highlights completely interchangeable, low cost, long-term stability, relative humidity and temperature measurement, long signal transmission distance, digital signal output, accurate calibration, low power consumption, standard single bus digital interface, standard I2C bus digital interface , The communication method is free to choose.
In this example we use the https://wiki.wemos.cc/products:d1_mini_shields:dht_shield

Code

https://github.com/wemos/WEMOS_DHT12_Arduino_Library

[codesyntax lang=”cpp”]

#include <WEMOS_DHT12.h>

DHT12 dht12;

void setup() {

  Serial.begin(115200);

}

void loop() {

  if(dht12.get()==0){
    Serial.print("Temperature in Celsius : ");
    Serial.println(dht12.cTemp);
    Serial.print("Temperature in Fahrenheit : ");
    Serial.println(dht12.fTemp);
    Serial.print("Relative Humidity : ");
    Serial.println(dht12.humidity);
    Serial.println();
  }
  delay(1000);

}

[/codesyntax]

Output

Open the serial monitor

Temperature in Celsius : 23.60
Temperature in Fahrenheit : 74.48
Relative Humidity : 38.10

Temperature in Celsius : 23.70
Temperature in Fahrenheit : 74.66
Relative Humidity : 38.30

Temperature in Celsius : 24.00
Temperature in Fahrenheit : 75.20
Relative Humidity : 41.80

Temperature in Celsius : 24.20
Temperature in Fahrenheit : 75.56
Relative Humidity : 42.00

Temperature in Celsius : 24.50
Temperature in Fahrenheit : 76.10
Relative Humidity : 43.20

Links

DHT Shield V2.0.0 for WEMOS D1 mini DHT12 I2C digital temperature and humidity sensor module sensor free shipping

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