NodeMCU, is an open source networking platform. It uses Lua scripting language programming . This baseboard is fitted with an onboard switching DC-DC buck (wide input range) and a standard 5.5 x 2.1 mm DC socket, mounting holes and numerous headers are available to esase NodeMCU V3 module usage. Allows developers to deal with the underlying hardware in a manner similar to For Arduino. Applies to the basic testing of the DIY breadboard for LoLin V3 NodeMcu Lua WIFI. Material:CCL Color:black Size:6*6cm Package include:1 x NodeMCU Breakout Base Board DIY Breadboard Plate MCU Module