.. toctree::
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   :caption: KE4085 KE0188 KE0189 KE0190 KE0191 Keyes STEM电子积木 I2S音频功率放大器模块

   README.md
   docs/KE4085 KE0188 KE0189 KE0190 KE0191 Keyes STEM电子积木 I2S音频功率放大器模块 黑色环保(蓝色端子)