1. Josh Lawson ECE 4330

2. Overview Project Description Schematic Hardware Involved Features of ATMEGA16/STK500 Involved System Features Testing Method

3. Project Description Description The overall design involves using a generator to determine the amount of illumination given from a lamp. The user shall request for a desired luminosity and the generator shall attempt to produce the correct amount of current for the lamp. The level of light is read in and the output of the generator is changed in order to compensate.

4. Project Description Cont. Requirements System shall incorporate dynamic levels of luminosity. Upon system start-up the light sensor shall sample the lowest level of illumination. Generator set to full and light sensor shall sample the highest level of illumination. User shall be acknowledged when initial setup is complete. User shall request level of illumination. User presses button to determine amount of illumination. Motor initiated to run at assumed power level. Power for light shall come from a generator Motor spins a magnet inside coils of copper wiring. Copper wiring hooked directly to light. Open Loop Light sensor must read light levels and change output of the generator. Implementation of noise reduction methods and algorithms.

5. Schematic

6. Hardware Involved ATMEGA16 DC motor, Radio Shack p/n 273-258 CdS Photocell Power FET IRF510 Lamp Generator Magnet Copper Coil

7. Features of ATMEGA16/STK500 Involved Analog to Digital Convertor PWM duty cycle register (OCR2) Timer 1 overflow USART (communication to PC terminal) Switches (reads user requests) LEDs (indicates current status of the circuit)

8. System Features Switches 0-4 (SW0-SW4) SW0 – 0% luminosity SW1 – 25% luminosity SW2 – 50% luminosity SW3 – 75% luminosity SW4 – 100% luminosity LED 0 - indicates status of system Set solid when initializing Turns to heartbeat signal when system is ready LEDs 1-4 –informs user of desired luminosity level LEDs 1-4 shall light up accordingly to user pressing Switches 1-4 Terminal Display Displays the actual illumination, desired illumination, OCR2, and error.

9. Testing Method System Initialization Confirm lowest and highest illumination levels are read System Running For each level of desired illumination Confirm switch activates appropriate desired illumination level. Confirm DC motor starts according to illumination level. Confirm the illumination of lamp. Confirm the reading and noise filtering of illumination level. Confirm error calculation and adjustment to DC motor.

10. Questions