If you don’t want to spend money, but want to scare away hooligans and thieves from your site, I suggest a very simple design of a dummy camera.
We will need the following:
The sealant tube is empty.
Empty plastic bottle of white color.
A few details. You can take from old, worn out equipment. The author took a board from a Soviet semiconductor TV.
Charge by phone. Phones fail, become obsolete, lost, and charges accumulate in the closet.
Any wire. At least two veins. You can use twisted pair to build computer networks. It depends on the distance between the camera and the outlet.
Instruments:
Knife.
Soldering iron with accessories.
Universal screwdriver.
Sealant with a gun, can be in a regular tube.
Spray with paint. The remnants of the repair were used.
Glue.
A few screws.
We cut the tube from the sealant.
From the remaining part, cut out the visor.
We cut a circle inside our camera, it will serve as an intermediate cover.
We paint preparations.
In order for the camera to attract attention, we insert a red LED inside it and assemble a simple circuit.
We need one LED, so instead of the second we leave the resistor.
Transistors can use absolutely any n-p-n or p-n-p. It will be necessary to change the polarity.
The multivibrator will be powered by charging through the wire.
We solder, collect, verify.
We glue the camera. Fill all holes with sealant.
Mount, connect.
For two years no one has trodden the flowerbed.
The issue price is unknown. Since everything you need was already there.