In fact, this can be understood by looking at the picture. It is a small transfer tool that ensures the stability of the interface. At the same time, it can quickly switch between 5.0 and 3.3 voltages or disconnect the vcc for easy debugging.
The front end has a solder mask window, and you can apply some glue to make the header stick and not loosen.
*Note : When placing an order for PCB at Jiali, you need to note that " drilling holes to the circuit layer will be treated as if there are no copper holes. "
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It is your responsibility to test the circuit yourself and determine its suitability for you. EEWorld will not be liable for direct, indirect, special, incidental, consequential or punitive damages arising from any cause or anything connected to any reference design used.
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