Contents
How do I connect Arduino to Nextion?
Connecting the Nextion display to the Arduino is very straightforward. You just need to make four connections: GND, RX, TX, and +5V. These pins are labeled at the back of your display, as shown in the figure below.
How do you control ESP32?
Open the Serial Monitor at a baud rate of 115200 and press the ESP32 EN button to get its IP address. Then, open a browser in your local network and type the ESP32 IP address to get access to the web server. You should get something as follows with as many buttons as the number of relays you’ve defined in your code.
How do I upload to Nextion?
Connect the USB to TTL adapter to PC and note the serial COM port allotted. Click on Upload button on the Nextion Editor….
- Open Nextion Editor and go to File -> New to create a new file or you can import the .
- Give it a name and save it.
How do you use a Nextion screen?
How to Build an Interface with Nextion Editor
- First we click the New button on the Toolbar and select a folder where to save the project.
- A new window opens and you have to select your display.
- Then you can select the display direction: vertical or horizontal and confirm all setting by pressing the OK button.
How to control a relay with the ESP32?
The code to control a relay with the ESP32 is as simple as controlling an LED or any other output. In this example, as we’re using a normally open configuration, we need to send a LOW signal to let the current flow, and a HIGH signal to stop the current flow.
How to control the relay switching in nextion?
This is my updated code to display the temperature and humidity in Nextion display and also to control the relay switching in Nextion display. It works good. Thanks for contributing an answer to Arduino Stack Exchange!
How to control a relay using the Arduino core?
The objective of this esp32 tutorial is to explain how to control a relay using the Arduino core, running on a ESP32. We will use a relay board which contains not only the relay but also some additional electronics that allow us to directly control the relay from a digital pin of a microcontroller (in our case, the ESP32).
Can a microcontroller be used to control a relay?
We will use a relay board which contains not only the relay but also some additional electronics that allow us to directly control the relay from a digital pin of a microcontroller (in our case, the ESP32). This tutorial will focus only on the control of the relay and thus we will only work with low voltages and currents.