Flashlight Project Proposal
Flashlight Project Proposal NAJA Tech Industries©
NAJA Tech Industries©
Model for Original Design
NAJA Tech Industries©
AutoCAD Original Design
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A Change in Plans • During the Build for the flashlight • Idea for using the bottom of a soda can for a reflective piece for the led array
NAJA Tech Industries©
New Design
• Using the soda can for the body of the flashlight • Utilizing the parts of the can to hold the batteries, support the LEDs and the on/off switch
NAJA Tech Industries©
Wiring Diagram
NAJA Tech Industries©
Rationale for New Design • Use Recycled Materials – – – –
• • • •
Used soda cans Packing peanuts Drink carton Paper plate
Cool Design Light and Durable Cut on costs Easy to recharge batteries without taking apart the flashlight NAJA Tech Industries©
Old Materials List • • • • • • • • • •
20 led bulbs On/ off switch 1 ½ in diameter pvc pipe foam board 2 pvc caps 1- ½ in diameter 3 feet of ¼ inch diameter dowel rods 15 ohm resistor Standard copper wire Transparent 0.177” thick plexiglass 3 batteries NAJA Tech Industries©
Original Cost • • • • • • • • • • •
Led bulbs: 20 at 10 cents : 20*$0.10= $2.00 foam board:$2.79 switch: $2.39 pvc pipe:$0.79 pvc caps 1- ½ in diameter :2*$0.86= $1.72 dowel rods : $0.78 plexiglass: $5.80 batteries: $1*3 = $3.00 Wire- $1.60 Charger- $2.88 Total: $23.75 NAJA Tech Industries©
New Materials • • • • • • • • • • • •
On/ off switch 22 gage copper wire Transparent 0.177” thick plexiglass 3 batteries 14 LEDS Electrical tape Used Soda Can Recycled Packing Peanuts Recycled Drink Carton Recycled Paper plates DC Power Connector Chassis Mount DC Power Jack NAJA Tech Industries©
New Cost Per Flash Light Led bulbs: 14 at 10 cents : 14*$0.10= $1.40 switch: $2.39 batteries: $1*3 = $3.00 3 ft of Electrical tape: $3.98/ 22= $0.18 DC Power Connector -$1.09 Chassis Mount DC Power Jack -$1.79 1 ft black and 1 ft red 22 Gauge Copper wire = $15.99/10= $1.60 • Total Cost = $11.45 • Savings = $12.30 • • • • • • •
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Overview of Procedure • LED array (wired in parallel) – 14 LEDs
• Battery Pack (wired in parallel)
– Aluminum plates as +/- connections
• Button
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Build!
NAJA Tech Industries©
Build Continued
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LED Specs
NAJA Tech Industries©
Battery Specs Battery Brand Name
UltraFire
Battery Model No
18650
Capacity (mAh)
4000
Cell type
Li-ion
Rechargeable
Yes
With Charger
No
Voltage (V)
3.7
Dimensions (cm)
6.7 x 1.7 x 1.7
Weight (kg)
0.089
NAJA Tech Industries©
Theoretical Testing • • • •
4 Ah * 3 Batteries = 12 Ah 0.105 W per LED (14)0.105 W * 1 A/ 3.7 W * 1/12Ah = 30.2 hrs 6 lumens/1 bulb * 14 bulbs = 84 lumens = 84,000 mCd
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Charging Test!
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Light Test!
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Results from Light Output Test Distance (ft)
Lumens/ sq foot
Lux (Raw)
Lux (Actual)
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
378 100 52 25 15 12 8 7 5 5 5 4 4 3 3 3 3 3 2 2 2 2 2 2 2 1 2 2 1 1
4414 1543 828 472 309 215 135 113 90 82 64 53 46 45 40 38 32 30 33 30 25 23 21 19 19 15 18 17 16 16
4412 1541 826 470 307 213 133 111 88 80 62 51 44 43 38 36 30 28 31 28 23 21 19 17 17 13 16 15 14 14
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Results (Continued)
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Final Product!
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Next Step • • • • • • •
Solar powered charger Make more recyclable Decrease Build time More Efficient Build Procedure Make more aesthetically pleasing More secure wiring Wire switch with light on NAJA Tech Industries©
Questions? Comments? Concerns? NAJA Tech Industries©
NAJA Tech Industries©
Model for Original Design
NAJA Tech Industries©
AutoCAD Original Design
NAJA Tech Industries©
A Change in Plans • During the Build for the flashlight • Idea for using the bottom of a soda can for a reflective piece for the led array
NAJA Tech Industries©
New Design
• Using the soda can for the body of the flashlight • Utilizing the parts of the can to hold the batteries, support the LEDs and the on/off switch
NAJA Tech Industries©
Wiring Diagram
NAJA Tech Industries©
Rationale for New Design • Use Recycled Materials – – – –
• • • •
Used soda cans Packing peanuts Drink carton Paper plate
Cool Design Light and Durable Cut on costs Easy to recharge batteries without taking apart the flashlight NAJA Tech Industries©
Old Materials List • • • • • • • • • •
20 led bulbs On/ off switch 1 ½ in diameter pvc pipe foam board 2 pvc caps 1- ½ in diameter 3 feet of ¼ inch diameter dowel rods 15 ohm resistor Standard copper wire Transparent 0.177” thick plexiglass 3 batteries NAJA Tech Industries©
Original Cost • • • • • • • • • • •
Led bulbs: 20 at 10 cents : 20*$0.10= $2.00 foam board:$2.79 switch: $2.39 pvc pipe:$0.79 pvc caps 1- ½ in diameter :2*$0.86= $1.72 dowel rods : $0.78 plexiglass: $5.80 batteries: $1*3 = $3.00 Wire- $1.60 Charger- $2.88 Total: $23.75 NAJA Tech Industries©
New Materials • • • • • • • • • • • •
On/ off switch 22 gage copper wire Transparent 0.177” thick plexiglass 3 batteries 14 LEDS Electrical tape Used Soda Can Recycled Packing Peanuts Recycled Drink Carton Recycled Paper plates DC Power Connector Chassis Mount DC Power Jack NAJA Tech Industries©
New Cost Per Flash Light Led bulbs: 14 at 10 cents : 14*$0.10= $1.40 switch: $2.39 batteries: $1*3 = $3.00 3 ft of Electrical tape: $3.98/ 22= $0.18 DC Power Connector -$1.09 Chassis Mount DC Power Jack -$1.79 1 ft black and 1 ft red 22 Gauge Copper wire = $15.99/10= $1.60 • Total Cost = $11.45 • Savings = $12.30 • • • • • • •
NAJA Tech Industries©
Overview of Procedure • LED array (wired in parallel) – 14 LEDs
• Battery Pack (wired in parallel)
– Aluminum plates as +/- connections
• Button
NAJA Tech Industries©
Build!
NAJA Tech Industries©
Build Continued
NAJA Tech Industries©
LED Specs
NAJA Tech Industries©
Battery Specs Battery Brand Name
UltraFire
Battery Model No
18650
Capacity (mAh)
4000
Cell type
Li-ion
Rechargeable
Yes
With Charger
No
Voltage (V)
3.7
Dimensions (cm)
6.7 x 1.7 x 1.7
Weight (kg)
0.089
NAJA Tech Industries©
Theoretical Testing • • • •
4 Ah * 3 Batteries = 12 Ah 0.105 W per LED (14)0.105 W * 1 A/ 3.7 W * 1/12Ah = 30.2 hrs 6 lumens/1 bulb * 14 bulbs = 84 lumens = 84,000 mCd
NAJA Tech Industries©
Charging Test!
NAJA Tech Industries©
Light Test!
NAJA Tech Industries©
Results from Light Output Test Distance (ft)
Lumens/ sq foot
Lux (Raw)
Lux (Actual)
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
378 100 52 25 15 12 8 7 5 5 5 4 4 3 3 3 3 3 2 2 2 2 2 2 2 1 2 2 1 1
4414 1543 828 472 309 215 135 113 90 82 64 53 46 45 40 38 32 30 33 30 25 23 21 19 19 15 18 17 16 16
4412 1541 826 470 307 213 133 111 88 80 62 51 44 43 38 36 30 28 31 28 23 21 19 17 17 13 16 15 14 14
NAJA Tech Industries©
Results (Continued)
NAJA Tech Industries©
Final Product!
NAJA Tech Industries©
Next Step • • • • • • •
Solar powered charger Make more recyclable Decrease Build time More Efficient Build Procedure Make more aesthetically pleasing More secure wiring Wire switch with light on NAJA Tech Industries©
Questions? Comments? Concerns? NAJA Tech Industries©
