Gadget Freak Case #119: Take Control of Your Car’s Interior Lights

April 28, 2008

3 Min Read
Gadget Freak Case #119: Take Control of Your Car’s Interior Lights

When you close your car door, the lights may go out immediately, fade or they may stay on interminably while you stand there wondering if you closed the door all the way. Bill Bowden has devised a gadget that lets you take control of your interior lights. Bowden’s Automobile Interior Lights Fader lets you determine whether the lights go out right away, fade or stay on for a few seconds. You can even program the fade times to fast-on, slow-off or vice versa. The device’s circuit is intended for cars that have a door switch that supplies a ground to the interior lights with one side of the lights connected to the positive side of the battery through an appropriate fuse. With a few modifications, the device can also be used without a door switch.

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Amt

1

LM324 quad op-amp

248-0027

1

2N3904 Transistor

568-0292

1

2N3906 Transistor

568-0293

1

IRFZ44 Mosfet

273-0224

3

100 uF Capacitor

613-0745

1

.05 uF Capacitor

507-0811

1

100O Resistor

296-4662

1

6.2K Resistor

296-6592

1

7.5K Resistor

296-6632

1

8.2K Resistor

296-6598

4

10K Resistor

895-0633

3

75K Resistor

296-6627

1

100K Resistor

296-4664

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