Wemos d1 mini Arduino wi-fi board esp-8266
11 Digital IO, interrupt/PWM/I2C/one-wire supported(except D0)
1 Analog input(3.2V max input)
A Micro USB connection
Compatible with MicroPython, Arduino, NodeMCU
4MB Flash
3.0 ~ 3.6V (recommendation 3.3V)
80mA Nominal working current
802.11 b / g / n
2.4GHz-2.5GHz (2400M-2483.5M), PCB trace antenna
UART / HSPI / I2C / I2S / Ir Remote Control / GPIO / PWM
24 x 16mm PCB, 2×8 castellated connections
Operating temperature: -40°C ~ 125°C