What Is a Nodemcu Lua

NodeMCU is an open source Lua based firmware for the ESP8266 WiFi SOC from Espressif and uses an on-module flash-based SPIFFS file system. NodeMCU is implemented in C and is layered on the Espressif NON-OS SDK.

How do I use NodeMCU Lua?

1. Bill of materials.
2. Create a firmware.
3. Flash firmware to NodeMCU.
4. Test the REPL.
5. Connect to WiFi.
6. Connect and test the BME280 sensor.
7. Upload init.lua.
8. Upload sensor readings to MQTT.

What is meant by NodeMCU?

The NodeMCU (Node MicroController Unit) is an open source software and hardware development environment that is built around a very inexpensive System-on-a-Chip (SoC) called the ESP8266. … And, you have to program it in low-level machine instructions that can be interpreted by the chip hardware.