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Knight Rider LightsBautista•Catapang•Magaling•Tabunot
22 March 2012
INTRODUCTION
Background of the StudyLight Emitting Diodes
Have various applications in:• automobile styling• entertainment• technology• advertisements
Background of the StudyLED Knight Rider Lights• an automotive innovation• can change flashing patterns
back and forth• placed under the hood behind
the grille and controlledby a remote
Background of the StudyLED Knight Rider Lights• works through an IC, the TL082– creates an adjustable sawtooth generator
• 1K trimmer, 5K Trimmer and a 250K Trimmer
Background of the StudyLED Knight Rider Lights• can be embedded in billboards and bar
lights• can serve as an early warning device for
cars• can be used as an emergency light
ObjectivesGeneral:
Construct of a basic Knight Rider Lights circuit
Specific:1. Generate a PCB layout, through the
software PCB Wizard, patterned after the schematic diagram of Knight Rider Lights
Objectives2. Acquire the necessary parts and adjust
circuit values simultaneously 3. Attach LED lights properly to each slate
Significance of the Study• Deeper comprehension of principles in
circuit-making and electronics• Construct circuits that have a direct
application in everyday life• Assess and confirm the feasibility of a
Knight Rider Lights• The project has potential economic
importance
METHODOLOGY
Circuit, schematic, and PCB diagram
Figure 1. Schematic diagram of the Knight Rider Lights 3
Circuit, schematic, and PCB diagram
Figure 2. PCB layout in artwork of Knight Rider Lights
Circuit, schematic, and PCB diagram
Figure 3. PCB layout in artwork of LED lights for Knight Rider Lights
Circuit, schematic, and PCB diagram
Figure 4. PCB layout in real world showing the parts placement guidefor the Knight Rider Lights
Circuit, schematic, and PCB diagram
Figure 5 . PCB layout in real world showing the parts placement guidefor the LED lights for Knight Rider Lights
How the Circuit Works• Operates with TL082• Has two operational amplifiers• Left and right LED's are connected in
series • 1K trimmer to adjust the
voltage input to the LM3914
How the Circuit Works• Operates with TL082• Has two operational amplifiers• Left and right LED's are connected in
series • 1K trimmer to adjust the
voltage input to the LM3914
How the Circuit Works• 5K trimmer to adjust the output
voltage of the sawtooth oscillator• 250K trimmer to set the frequency as
desired
List of PartsSemiconductors Quantity
LM 3914 1
TL082 1
1 N4148 1
LED 20
Capacitors
1 uF Tantalum 2
1 uF Mylar 1
List of PartsResistors Quantity
250K Trimmer 1
5K Trimmer 1
1K Trimmer 1
100K 1
82K 2
47K 2
10K 2
1.2K 1
List of Parts
Miscellaneous Quantity
12V Battery clip 1
Optional
LM3915 or LM3916 IC
RESULTS
CONCLUSION
Limitations• Very few literature• Too straightforward– does not hold much promise as bug
detectors, metal sensors, or alarms
• The light emitted coversvery short distance (5-10m)
Limitations• effectivity decreases during the
morning• function leans towards aesthetics
rather than practicality
Recommendation• replace the ordinary LED with super
bright LED– to stand independently of the light
emitted by the sun
• increase the quantity of the LED
Recommendation• connect to a remote control– Enable access from both inside and outside
the vehicle without physical contact– adjust the speed of the LED
• formulate better protocolsto improve the circuit’s mechanism
• eventually discover more feasibleand practical purposes
