About this product
NodeMCU-style development board pairing an Espressif ESP8266 2.4 GHz Wi-Fi microcontroller with a CH340 USB-to-serial interface for programming and power. It exposes GPIO, serial, SPI, I2C, and a single analogue input on breadboard-friendly rows and works with the Arduino core, MicroPython, or Lua. Flash size and pin mapping depend on the fitted module, and the 3.3 V logic requires level shifting for 5 V devices.