Printed Circuit Boards (PCBs)
KiCAD, Breadboard Prototyping
Overview
These PCBs were made as a part of assignments for my Electronics and Controls class. For all of them we began by prototyping the circuit on a breadboard and then laying it out on KiCAD. We then got the PCBs manufactured by OSHPark.
H-Bridge
We needed to create and H-bridge in order to be able to easily reverse the direction that a motor is spinning. The H-Bridge uses 2 N-channel MOSFETs, 2 P-channel MOSFETs, and 2 BJT transistors to allow a low voltage 3.3v signal from a microcontroller to control the motor direction.
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H-Bridge Schematic
Breadboard Prototype; the alligator clips connect to a DC motor
H-Bridge PCB Layout
Voltage Regulator
This Voltage Regulator is designed take voltage from a 12V and output either 3.3V or 5V. Capciators were used in order to smooth
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Breadboard Prototype; The barrel jack connects to a 12V power source
Schematic
PCB Layout