开源的硬件中文教程，主控室atmel（AVR单片机），外设可以直接连接串口，WIFI，蓝牙等模块，IOT方面使用比较多。(Open source hardware Chinese tutorial, the main control room ATMEL (AVR microcontroller), peripherals can be directly connected to the serial port, WIFI, Bluetooth and other modules, IOT us

arduino编程基础入门，零基础适用，从零开始(An introduction to the Arduino programming foundation)