小咸鱼 issues

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                                            小咸鱼

原理图中的四个电容没有给定容值等参数，以及U1芯片的具体型号为多少。还请解答，多谢

i click on the sch file‘s url。it tell me there is not have the sch files。and can you tell me how can i use the arduino to use this broad？