To justify building on myself, I had to do a cost analysis.
Purchased:
4x D-cell Batteries ($5)
1x LED Dynamics BoostPuck ($35)
4x Lumileds Luxeon I Star/O ($25)
Subtotal: $65
Spare parts:
1x 270uF capacitor
1x 24-gauge (AWG) lead wire
1x Pentium3 Heat Sink
1x Mounting bracket
1x Rocker switch
2x 2 D-cell Battery Holder
1x 18-gauge (AWG) lead wire
Note that comparable systems are water-resistant and include a rechargeable battery system, but can cost from $120 up to $300.
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