Alarm simulator in the car with your own hands
In this article, I will tell you how to make a snack for car kidnappers.
I made a flashing light bulb in a rack, similar to those that put together with the alarm. Make a flashing light can be done according to the scheme
By increasing the capacitance capacitors you can increase the luminescence time and / or increase the pause. It is not necessary to use these transistors, you can CT315 or KT816. In general, this scheme is called a multivibrator.
Assembled this scheme by mounted installation (photo is not for the faint of heart).
I, as befits a novice radio amateur, put it in boxes from matches. And the LED brought away. That's what happened.
It remains for small, install a light bulb. The benefit of a thin skin, keeps everything on three screws. Remove, drill holes (drill 3mm). We insert the LED and screw the detail of the "decor" back.
Now the most interesting. How to make that LED blink only when the ignition is turned off. You can see the documentation for the ignition lock, and you can connect to the ignition relay as I barbaric. An experienced way I found out where there is current when the key is turned around, and where there is no one, and vice versa. Look drawing.
Now you can not worry for the car, no military thing hacks this "alarm".
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