ESP32红外接收电路

ESP32芯片集成了红外接收控制器，可以用于多种类型的红外通信。ESP32有8个通道，每个通道都可以独立进行红外信号的接收和解码。一般的红外接收管是一个集成的元件，具备光信号到电信号的转换、信号放大和解码等功能。当红外接收管接收到红外线时，会导通，光信号就会转为电信号。然后电信号经过放大电路和解码，解码的作用是滤除非38kHz的信号。当接收的信号是38kHz时，输出脚会输出低电平。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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