PCB Layout Design. PCB Layout Special Layout Considerations 4 in.

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Presentation transcript:

PCB Layout Design

PCB Layout

Special Layout Considerations 4 in

Microcontroller Layout Considerations  Headers Programming header Debugging USART header  Routing considerations Micro must connect radially to all components Limit the use of vias  External oscillator Precaution; internal 8 MHz oscillator seems sufficient

Power Supply Layout Considerations  Multiple voltages 7.4 V battery for motor 5.0 V regulated for micro and other components  Power lines Direct routing of power to each subsystem Difficult due to board size/shape  Passive components Decoupling and bulk capacitors

Things to Do  Add headers for unused port pins  Connect headers: Analog sensor header Programming header I2C header for compass  Increase thickness of power traces  Add idiot-proof connectors  Reverse voltage protection diode