The esp8266 nodemcu is an open-source iot prototyping board featuring the esp-8266 module, built-in wi-fi, and usb-to-serial capability. based on the esp8266 wi-fi soc, it features a tensilica 32-bit risc cpu (80-160 mhz), 4mb flash, and 128 kb ram. it is commonly programmed using lua script or the arduino ide for home automation and diy wireless projects
microcontroller: tensilica 32-bit risc cpu xtensa lx106
operating voltage: 3.3v
input voltage: 7-12v
digital i/o pins (dio): 16
analog input pins (adc): 1
uarts: 1
spis: 1
i2cs: 1
flash memory: 4 mb
sram: 64 kb
clock speed: 80 mhz
usb-ttl based on cp2102 is included onboard, enabling plug n play
pcb antenna
small sized module to fit smartly inside your iot projects