PDR: 3/27/08PDR: 3/27/08

Pinwheel Technologies (C3)Pinwheel Technologies (C3)Heather BlahaHeather Blaha

Matt FuxaMatt FuxaJoey KingJoey King

Michael McConnellMichael McConnellDomenic TassoniDomenic Tassoni

OverviewOverview

Vertical-Axis Vertical-Axis Wind TurbineWind Turbine

Interchangeable Interchangeable ShaftShaft

Last Week’s Action ItemsLast Week’s Action Items

Circuit design and embedded intelligenceCircuit design and embedded intelligence

Decided on ‘slow drain’ circuitDecided on ‘slow drain’ circuitMicrocontroller input will be from ammeter Microcontroller input will be from ammeter

Last Week’s Action Items ctd.Last Week’s Action Items ctd.

Finish ordering partsOrdered all main componentsMissing: 1 bearing, 1 hand crank, nuts and

bolts

Current StatusCurrent Status

Step One

Receive all necessary parts

Step Two

?

Step Three

This Week’s Action ItemsThis Week’s Action Items

‘Step Two’

Finalize circuit logic

Step TwoStep Two

Order hand crankOrder hand crank24” shaft, 12” square barstock, 6” shaft24” shaft, 12” square barstock, 6” shaftWelded together, pinned to hubWelded together, pinned to hub

Step Two ctd.Step Two ctd.

Connect hub and shaftConnect hub and shaftMachine flatsMachine flatsDrill hole for clevis pinDrill hole for clevis pin

Mount turbineMount turbineDrill holes in supporting strutsDrill holes in supporting struts

Plan the rest of assembly Plan the rest of assembly process. Execute as feasible.process. Execute as feasible.

Circuit RequirementsCircuit Requirements

Measure rpms from ammeter input

Alert when generator is operating at unsustainablespeed (max 10 A)

Slow drain battery

Why not charge the battery?Why not charge the battery?

Not out to prove technical feasibility of charging a battery

Slow drain will prove key deliverablesMechanical functionalityIntelligence capability

Updated diagramUpdated diagram

ConclusionConclusion

Can see a tangible product taking shapeCan see a tangible product taking shape

Identify and execute remaining tasksIdentify and execute remaining tasksNext week: 100% identify, execute as much Next week: 100% identify, execute as much

as possibleas possible