The AZ-Delivery D1 Mini NodeMcu with ESP8266-12F and Micro-USB connection WLAN Module CH340G Lua is equipped with a powerful ESP8266 processor and integrated WLAN. This NodeMcu is particularly popular due to its small dimensions. Special features A CH340 chip is on board for easy and convenient programming. This compact development board can be used for various applications and projects due to its low weight and design. For example, it can measure air pressure, temperature and humidity with many of our sensors using its own web server via a WLAN connection. Technical data Operating voltage 3.3V DC Chip ESP8266-12F Clock frequency 80MHz / 160MHz Flash 4MB Digital I/O pins 9 Analog input pin 1 Port MicroUSB USB chip CH340 chip Dimensions 25 x 35 x 6mm Programming options There are various ways to program the D1 mini module. 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