Page 1 By: Todd L Palmer Microprocessor Controlled Bubble MachinePage 2 Introduction How did the idea occur? Purpose of the devicePage 3 Theory Microcontroller External Circuitry Final Schematic Parts ListPage 4 MicrocontrollerPage 5 MicrocontrollerPage 6 Microcontroller PWM – Pulse Width Modulation PCA – Programmable Counter Array Timer 2Page 7 PWM/PCAPage 8 Timer 2 Interrupt Interrupt PWM Auto-reloadPage 9 External Circuitry Stepper Motor driver Blower driverPage 10 External CircuitryPage 11 Stepper MotorPage 12 Stepper MotorPage 13 Stepper MotorPage 14 BlowerPage 15 BlowerPage 16 Final SchematicPage 17 Final Program Programs\Final\Final.Uv2 Page 18 Design and Construction Gantt Chart Dimensional Drawings Parts ListPage 19 Gantt ChartPage 20 Dimensional DrawingsPage 21 Dimensional DrawingsPage 22 Parts ListPage 23 Questions and/or Comments