Automatic Lighting Box With a Timer on Battery

by ILYANOV in Circuits > LEDs

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Automatic Lighting Box With a Timer on Battery

заставкаПодсветкаEnglish.jpg

I propose a simple lighting scheme of the kitchen drawer to turn off the timer. The backlight is switched on for 15 seconds. (that's enough for me)

You See a Box With Light and Without

Automatic lighting box with a timer on battery.mp4_snapshot_02.28_[2016.07.03_01.00.46].jpg
Automatic lighting box with a timer on battery.mp4_snapshot_02.31_[2016.07.03_01.00.57].jpg

Hi

I propose a simple lighting scheme of the kitchen drawer to turn off the timer. The backlight is switched on for 15 seconds. (that's enough for me)

We Need:

Automatic lighting box with a timer on battery.mp4_snapshot_00.14_[2016.07.03_00.32.27].jpg

  • Magnetic contact 3 pins
  • Magnet D15H4
  • Transistor IRF840 (It can be any n-MOS transistor)
  • Resistor 500 Ohm
  • Resistor 300 Ohm (you can not put)
  • Resistor 20 Ohm (to reduce current LED strip - you can not put)
  • The capacitor 16c 22mkf
  • 25cm LED strip
  • 8pcs AA batteries (rechargeable batteries can not be used - high self-discharge)
  • 1 m double wire.

The Scheme Is Very Simple

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слайд2-english.jpg

How Does the Magnetic Contact

Automatic lighting box with a timer on battery.mp4_snapshot_00.17_[2016.07.03_00.40.10].jpg

As I approached a magnet contact switches

Solder the Resistor to the Transistor

Automatic lighting box with a timer on battery.mp4_snapshot_00.39_[2016.07.03_00.43.35].jpg

Solder the Remaining Parts of the Scheme

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Solder the Wires to the LED Strip and Connect to the Timer

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Automatic lighting box with a timer on battery.mp4_snapshot_00.58_[2016.07.03_00.47.16].jpg

Assemble Battery Pack

Automatic lighting box with a timer on battery.mp4_snapshot_01.17_[2016.07.03_00.52.19].jpg
Automatic lighting box with a timer on battery.mp4_snapshot_01.21_[2016.07.03_00.52.27].jpg

Test Duration and Current

Automatic lighting box with a timer on battery.mp4_snapshot_01.28_[2016.07.03_00.54.10].jpg
Automatic lighting box with a timer on battery.mp4_snapshot_01.43_[2016.07.03_00.54.28].jpg

Set in Place and Glue LED Strip

Automatic lighting box with a timer on battery.mp4_snapshot_02.03_[2016.07.03_00.56.09].jpg
Automatic lighting box with a timer on battery.mp4_snapshot_02.04_[2016.07.03_00.56.27].jpg

And Put a Magnet in Front of the Magnetic Contacts

Automatic lighting box with a timer on battery.mp4_snapshot_02.23_[2016.07.03_00.58.19].jpg

You Can See the Result.

Automatic lighting box with a timer on battery.mp4_snapshot_02.28_[2016.07.03_01.00.46].jpg
Automatic lighting box with a timer on battery.mp4_snapshot_02.31_[2016.07.03_01.00.57].jpg

With and without illumination.

More details you can see on the video.

Thank you for attention.