M5Atom (the same controller is used for M5AtomEcho).
M5Atom driver library. and download all the dependent libraries according to the prompts.
M5Stack or USB Serial. Windows recommends using driver files for direct installation in the device manager (custom update); executable installation may not work properly). Click here to download the FTDI driver


System Preferences -> Security & Privacy -> General -> Allow apps downloaded from -> App Store and identified developers.Connect the device to the computer via a USB cable. After completing the driver installation, select the corresponding device port in the Arduino IDE.
Indicator light description:
Github
Arduino API & Examples