Và khi em download code on/off led bằng switch (example on apps) hoặc xung PWM vào module thì làm thế nào test hay em phải nối led vào các gõ ra để kiểm tra vậy anh.
And when you download the code on/off led by switch (example on apps) or PWM pulse into the module then how I have to connect or test led to the knocking out to check that.
And when you download the code on / off switch with LED (example on apps) or PWM module on the test or how to connect led me to knock him out to check this.