Specifications

ii
4.2.3 Displays ............................................................................................................................... 45
4.2.4 Microcontrollers ................................................................................................................. 47
5 Design.................................................................................................................................................. 48
5.1 Battery ........................................................................................................................................ 48
5.2 Charging System.......................................................................................................................... 52
5.3 Wind Turbine .............................................................................................................................. 54
5.4 PV Cell Array................................................................................................................................ 58
5.5 Display ......................................................................................................................................... 62
5.6 Microcontroller ........................................................................................................................... 65
5.6.1 Power Usage Sensors .......................................................................................................... 68
5.6.2 Battery Charge State Sensors.............................................................................................. 70
5.7 Power Inverter ............................................................................................................................ 71
5.8 Power Outlets ............................................................................................................................. 73
5.9 Stand and Electronics Enclosure ................................................................................................. 74
6 Design Summary ................................................................................................................................. 76
7 Testing ................................................................................................................................................. 77
7.1 Introduction to Testing ............................................................................................................... 77
7.2 Power Generation testing ........................................................................................................... 78
7.2.1 Wind Turbine ...................................................................................................................... 78
7.2.2 PV Cell Array ........................................................................................................................ 80
7.2.3 Complete Power Generation System .................................................................................. 83
7.3 Power Storage System Testing ................................................................................................... 83
7.4 Power Output Testing ................................................................................................................. 84
7.5 Display Testing ............................................................................................................................ 86
8 Administrative Details ......................................................................................................................... 86
8.1 Milestones................................................................................................................................... 86
8.2 Budget ......................................................................................................................................... 87
8.3 Final Plans for Device .................................................................................................................. 88
8.4 Project Summary ......................................................................................................................... 89
8.5 Conclusion ................................................................................................................................... 90
9 Appendices .......................................................................................................................................... 91
9.1 Bibliography ................................................................................................................................ 91
9.2 Image Permissions ...................................................................................................................... 97