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Electric Zen

Electric Zen. Not your ordinary water fountain. Jim Lindblom. Elliott Hedman. Jordan McConnell. Paul Steinbrecher. Andrew Leung. Overall System: Block Diagram. User Computer. Fountain. D/A Converter. Valve Actuators. Written Program. Serial I/O. D/A Converter. Valve Actuators.

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Electric Zen

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  1. Electric Zen • Not your ordinary water fountain Jim Lindblom Elliott Hedman Jordan McConnell Paul Steinbrecher Andrew Leung

  2. Overall System: Block Diagram User Computer Fountain D/A Converter Valve Actuators Written Program Serial I/O D/A Converter Valve Actuators Winamp . . . . . . . . (16) Water Pump (16) ARM 7 D/A Converter Valve Actuators D/A Converter Valve Actuators Wii Remote Bluetooth

  3. Processor Selection, The ARM7 • Established, high-volume 32-bit RISC architecture • Very low power consumption • Fast execution per watt • Inexpensive • Wide variety of features and development tools

  4. Development • Board – LPC-2148 • GNU compiler • Altium for schematics • and PCB design

  5. The Design of the Fountain Valve Actuators Water Pump

  6. What Do We Need to Implement in Our Fountain? • Need to control the flow of individual valves using electric signals • Need enough water pressure in the system to drive multiple water spouts (16) • Need to keep the electric equipment away from any potential water spray, keep the water in a controlled spot

  7. Valves and Valve Actuators • In response to a signal, valve actuators move a valve to a desired position using an outside power source. • There are two basic valve actuator operating styles: On/off and modulating.

  8. Johnson Controls J-Series Electric Zone Valves • The J-Series Electric Zone Valves provide proportional valve control using 0 to 10 VDC, 0 to 5 VDC, or 5 to 10 VDC (jumper selectable) • Rated up to 300 psi

  9. Pressurizing the Valves • We plan to use a water pump to pressurize our valve system • Needs to be capable of driving enough water to each of our valves so they can reach a 2 to 3 foot spray • Noise and size must also be taken into consideration

  10. Fountain Tech Outdoor FT-5000 • Up to 5200 GPH • In-line pump • Capable of a large head while still maintaining decent GPH • At 7.5” tall and 9” long it’s size is not overwhelming source

  11. Keeping the Electric System Out of Water’s Reach • Need to keep the water in a controlled area, e.g. a tub. • Also need to prevent leakage out of the tub at the valve entry points.

  12. Software (PC) • Music player, and analyzer • Winamp plugin • Analyzes music • Detects beats and frequency spectrum • Sends data over serial connection to the board

  13. Software (Board) • Fountain dances with music • Displays the frequency spectrum as spout heights • Jumps on beats and Wiimote signals • Serial communication and code transfer from PC • Receive compiled code • Receive signals from Winamp plugin • FreeRTOS • Communication with Wiimote

  14. FreeRTOS • Designed to be small, simple and easy to use • Written in C • Portable across many different chip architectures. • Low profile

  15. The Risks/Contingency Plan • Mechanical Complexity of Water Fountain - Issues with water pressure and pipe system - Plan: Start simple and build up, seek expert advice • PCB has errors - Mounted pieces are incorrect - Plan: Allow time for revisions and use prototypes • Bluetooth for the Nintendo Wii - Not able to establish communication - Plan: Replace Wii mote with keyboard

  16. Additional Challenges • LEDS/Lighting • USB • SD Card • Complex interactions between Wii and WinAmp

  17. Questions???

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