Introduction: Blink LED by Using ESP32 NodeMCU WiFi & Bluetooth Module Tutorial

Picture of Blink LED by Using ESP32 NodeMCU WiFi & Bluetooth Module Tutorial

Description

NodeMCU is an open source IoT platform. It is programmed by using the Lua scripting language.The platform is based on eLua open source projects. The platform uses a lot of open source projects, such as lua-cjson, spiffs. This ESP32 NodeMcu contains firmware that can run on ESP32 Wi-Fi SoC chips, and hardware based on ESP-32S modules.It is the WiFi + Bluetooth hardware that can access through WiFi and Bluetooth.

Features:

  • Powerful operating hardware IO as arduino
  • micro USB port for power, programming and debugging

  • Using Nodejs similar syntax to write network applications

  • Ultra-low cost WIFI module
  • Dimension: 5.5 x 2.8 x 0.1cm

Step 1: Pin Definition

Picture of Pin Definition

Step 2: Pin Connection

Picture of Pin Connection

In this tutorial, connect LED's anode to ESP32's p21 and LED's cathode to ESP32's GND

Step 3: Sample Source Code

Download this sample source code.

Step 4: Uploading

After completing the hardware connection, you have to upload the source code (download at previous page) into the ESP32 by using a micro USB. Before uploading the code, you have to install ESP32's driver into your Arduino IDE, you can check here.

Step 5: Results

Picture of Results

As the result, the LED was blinking.

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