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2. PCB Layout Design
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Figure 2-5. Reference Design for Module Placement
2.2.2. Positioning Plug-in Components
For the USB interface, battery socket holder, power switch, SD card, headphone socket,
external speaker socket, debugging pin header, mounting hole, etc., the positioning of their
components should adhere to the following principles:
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Taking component structures into account, trying to make mounting/connecting easy.
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Facilitating the actual debugging operation
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Assisting trace routing
For example:
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Note:
In particular, you need to pay special attention to plug-in direction, pin sequence, positive and negative
polarity of these components. It is recommended to label these points at the Top Overlayer.
Espressif
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