NodeMCU ESP8266 (ESP-12E)
various (NodeMCU / Amica design)
≈ WiFi
80
MHz
Clock Speed
1
Cores
CPU
11
Pins
GPIO
General
Chipset
ESP8266EX
RAM
~50KB usable SRAM
Flash
4 MB
Storage
4MB SPI flash
USB
1x micro USB (CH340/CP2102 serial)
Connectivity
1x analog in (0-3.3V), SPI, I2C (bit-banged), UART
Power
5V micro USB or VIN 4.5-10V
Form Factor
48 x 26mm (breadboard-friendly)
Price
$3-$6
OS Support
none (bare metal) / NodeMCU Lua firmware
Frameworks & Languages
Arduino C/C++NodeMCU LuaMicroPythonESP8266 RTOS SDK