硬件：nodemcu v3，8欧1w喇叭（多少钱忘了） 硬件电路：喇叭直连RX引脚和GND，没找到三极管就没看找工程参考电路接 其他信息： SPIFFS上传方法参考： ...

The NodeMCU development board is a powerful solution to program microcontrollers and be part of the Internet of Things (IoT). The NodeMCU development board, based on ESP8266EX, is a cute module with a ...