At school, I would forget to go to bed and turn off the lights every day, but I didn’t want to go down, so I made a light switch artifact based on the Essence VC-02 module.
The pcb still has a shell made with Lichuang eda professional version. The gap in the pcb is used to place the 37*18 cavity speaker. A special jtag is required for burning.
The microphone is a relatively short 6*2.2 with a pin spacing of 0.9mm.
In order to facilitate debugging, it is recommended to buy a development board first and then build the board.
The overall cost does not exceed 20 (15 is about the same)
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