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Weather Station Using DHT11 Sensor & M5Stack Core ESP32
2026-06-11 | By Ron Cutts
License: GNU Lesser General Public License Humidity Microcontrollers Temperature Wifi Arduino ESP32 M5Stack
In this tutorial, you will learn how to make a simple weather station using the M5Stack Core ESP32 & DHT11 temperature and humidity sensor.
Watch the video!
What You Will Need
The Circuit
Connect "DHT11" sensor pin [VCC] to "M5 Stack Core" pin [5V]
Connect "DHT11" sensor pin [GND] to "M5 Stack Core" pin [G]
Connect "DHT11" sensor pin [S] to "M5 Stack Core" digital pin [5]
Start Visuino, and Select the M5 Stack Core Board Type
Start Visuino as shown in the first picture. Click on the "Tools" button on the Arduino component (Picture 1) in Visuino. When the dialog appears, select "M5 Stack Core" as shown in Picture 2
In Visuino, Add Components
Add "Analog To Text" component
Add "DHT11" component
In Visuino Set Components
Select "AnalogToText1" and in the Properties window set "Precision" to 1, this way we will only display one decimal, for example, 25.6
Select "AnalogToText12 and in the Properties window set "Precision" to 1
Select M5 Stack Core and in the editor Modules>TFT Display>Elements, click on the [...] button so that the "Elements" window will open.
In the Elements window, drag "Draw Bitmap", and in the Properties window, set "X" to 20 and "Y" to 40, select "Bitmap", and click on the [...] button. Load the bitmap for the temperature. The Ideal size is 64X64
In the Elements window, drag another "Draw Bitmap", and in the Properties window, set "X to 20 and "Y" to 150, select "Bitmap" and click on the [...] button. Load the Bitmap for the Humidity; the ideal size is 64X64
In the Elements window, drag "Text Field" and in the Properties window set "X to 120, "Y" to 50, and "Size" to 6
In the Elements window, drag another "Text Field" and in the Properties window set "X to 120, "Y" to 160, and "Size" to 6
Close the "Elements" window
In Visuino Connect Components
Connect "HumidityThermometer1" pin [Sensor] to "M5 Stack Core" digital pin [GPIO 5]
Connect "HumidityThermometer1" pin [Temperature] to "AnalogToText1" pin [In]
Connect "HumidityThermometer1" pin [Sensor] to "AnalogToText2" pin [In]
Connect "AnalogToText1" pin [Sensor] to "M5 Stack Core" > "Text Field1" pin [In]
Connect "AnalogToText2" pin [Sensor] to "M5 Stack Core" > "Text Field2" pin [In]
Generate, Compile, and Upload the Code
In Visuino, at the bottom, click on the "Build" tab, make sure the correct port is selected, then click on the "Compile/Build and Upload" button.
Play
If you power the M5 Stack Core, the display should start showing the current temperature and humidity that it gets from the DHT11 sensor.
Congratulations! You have completed your Internet Time project with Visuino. Also attached is the Visuino project that I created for this tutorial. You can download and open it in Visuino: https://www.visuino.eu
