esp8266 d1 mini

TECH specs

·       Microcontroller       ESP-8266EX

·       Operating Voltage   3.3V

·       Digital I/O Pins       11

·       Analog Input Pins   1(Max input: 3.2V)

·       Clock Speed           80MHz/160MHz

·       Flash          4M bytes

·       Length        34.2mm

·       Width         25.6mm

·       Weight       3g