plz i want strong circuits that contain any sensor but i prefer distance sensors

 

Is this what you had in mind? It is optically based.

I am not sure what you mean by strong circuits. Maybe you

hgmjr

 

Google and a bit of personal initiative might get you there. Please use your indoor voice.

 

i mean professionally circuits contain any sensor

 

If you want a professional to create a new circuit design, you must pay for it. Are you looking the schematic of an existing commercial circuit?

 

i don't mean ready project but if u can give me ideas, for example

 

How about RADAR detection of flocks of seagulls?

 

i think 10 meter maximum

 

What do you want to sense? Mirrors? Big Rocks? Lightningbolts? Airborne Pathogens?

 

everything that indicate is good

 

How about a train?

http://www.mrollins.com/irled.html

 

where am i now?

 

thanx alot thingmarker3 but there are better than it