top of page

How to Control a Servo Using a Slider on a Web Server with NodeMCU

Here’s a step-by-step guide to control a servo motor using a slider on a web server with NodeMCU

Description:

In this tutorial, we'll show you how to control a servo motor using a slider on a web server hosted by a NodeMCU. This project combines IoT and web technologies to allow you to control the servo's position from any device with a web browser. Let's get started!


Materials Needed

- NodeMCU (ESP8266)

- Servo Motor (e.g., SG90)

- Breadboard and jumper wires

- Power supply (e.g., USB cable for NodeMCU)

- Micro USB cable

- Computer with Arduino IDE installed


Step 1: Set Up the Arduino IDE

1. Install the ESP8266 Board:

- Open Arduino IDE.

- Go to `File` > `Preferences`.

- In the "Additional Board Manager URLs" field, add: `http://arduino.esp8266.com/stable/package_esp8266com_index.json`.

- Go to `Tools` > `Board` > `Boards Manager`.

- Search for `ESP8266` and click "Install".

2. Install Required Libraries:

- Go to `Sketch` > `Include Library` > `Manage Libraries`.

- Search for `ESP8266WiFi` and install it.

- Search for `Servo` and install it.


Step 2: Connect the Servo Motor to NodeMCU

1. Connections:

- Connect the servo motor's power pin (usually red) to the 3.3V pin on the NodeMCU.

- Connect the ground pin (usually black or brown) to the GND pin on the NodeMCU.

- Connect the signal pin (usually yellow or white) to the D1 (GPIO 5) pin on the NodeMCU.


Step 3: Write the Code

1. Create the Web Server Code:

2. Upload the Code:

- Select your board and port from `Tools` > `Board` > `NodeMCU 1.0 (ESP-12E Module)` and `Tools` > `Port`.

- Click the upload button to flash the code to the NodeMCU.


Step 4: Test the Project

1. Connect to the Web Server:

- Open the Serial Monitor in Arduino IDE (set baud rate to 115200) to see the IP address assigned to your NodeMCU by your WiFi network.

- Open a web browser and enter the IP address in the address bar.

2. Control the Servo:

- You should see a slider on the webpage. Move the slider to control the servo's position.

- The servo should move according to the slider value, allowing you to control its angle from 0 to 180 degrees.

Project Gallery

All Documents :

Download and Run the below code.

Click Here to Download

Video Tutorial :

Conclusion :

You have successfully created a web server on the NodeMCU to control a servo motor using a slider. This project demonstrates the power of combining IoT and web technologies for remote control applications. Explore more projects and continue enhancing your skills with EmbeddedBrew!

Comments

Share Your ThoughtsBe the first to write a comment.
bottom of page