Introduction: 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
Step 2: 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
As the result, the LED was blinking.