ELECFREAKS iot:bit for micro:bit M5 They are small

They are small

Write your code to make the car forever move forth and back for 3 seconds respectively

More time teaching

You can use it to drive PWM signal driving devices like servo

ELECFREAKS iot:bit for micro:bit M5 They are smallIntroduction IOT: bit is an expansion board based on IoT for micro: bit. It uses ESP8266 as WIFI expansion board and serial port to communicate with micro: bit. It also has extended all available IO port of the micro: bit which is leaded by GVS and you can extent various 3V E blocks as LED, photosensitive and servo by using it. At the same time, the IOT: bit with an on board buzzer for outside sound and an on board RTC clock for timing without power