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