Motion Sensor and electric motors and light bulbs

[WYSIWYG]

I am new to electronics. I want to use a motion sensor to turn on
9-18 volt electric motors for 5 seconds. The sensor need to detect
object 1/2 foot or 16cm away. I also want to be able to turn on light
bulbs.

Can someone give me some suggestions how I should build this or where
I can buy the parts?

 

[Jerry Greenberg]

If these are lower current motors, you can use the relay output from
any of the standard alarm system IR motion sensors. They run on 12
Volts, and have a relay output. You can strap the output for NO or NC
type contacts. The max current is about 1 or 2 amps that it can take
if it is the relay output type. If you need more power handling, you
can get a power relay from the alarm system parts supplier.

You will need a small power supply to run the detector, and your
motor.

It would be cheaper and much easier buy a motion detector, than trying
to build one detector yourself, and then break your brains to make it
work the way you want. It takes some experience and a discent
background in electronics to start building these project, and this is
not a good starter type of project.

Jerry Greenberg
http://www.zoom-one.com