Automatic LED backlight with motion sensor
I will show how to make a universal LED illumination of something, be it at least the lighting of the working area or the illumination of a niche bed. The LED strip will light up automatically when an object approaches and also turn off automatically after a specified period of time.The sensor itself. When buying, look at the supply voltage. My feeds from 12 V. You can take the 5 V most common, but then you have to make a stabilizer for it. Immediately, the stabilizer is right on the sensor board.The connector for the connection has three outputs: plus, minus and the logical output of the signal.Well, here you can guess: red - plus, black - minus, and brown - signal output.The NE555 chip has a delay timer. As soon as a short signal is received from the motion sensor, the timer will start and turn on the LED strip using the key on the transistor. Well, as time goes - turn off. It's simple. We compile the circuit and test it on a temporary breadboard.Next, we already build on the permanent.From the bottom, the circuit board is simply soldered with solder tracks. I like to assemble electronic devices on such boards, it is very simple.You can buy them - HERE.Once again we are testing the newly assembled automatic backlight board.Without movement, the tape is turned off.And as soon as you move or appear, it lights up right away.
It will be necessary to make an automatic backlightLED strip, my hank. Took a warm glow.
Automation SchemeThe matching circuit and control of the LED ribbon glow using a motion sensor is shown below.
Use automatic backlightWhere and where to apply this whole business is up to you. Personally, I made such a highlight in the kitchen, and now when I walk up to the sink to wash the dishes - the light automatically lights up. I also made the highlight of the bottom of the bed. This is how everything is fixed.
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