Homemade Long Range Body Heat Detector

In the process of making a bodyheat detector I found very little information on the web, which is quite surprising, because In many situations these devices are more useful than a flashlight. Police and military services are dependent on thermal technology:



Ones on the net like the Gamefinder series retail for at least $120 and go all the way up to over $350!!!. Even kits sell for $100. Their version is barely portable, fussy and with all the moving parts, is unreliable.

The bodyheat detector is well described here;

The body heat detector detects the presence of black body radiation down to 100 degrees Fahrenheit. All warm blooded organisms both human and animal are therefore easily detected. The device is similar to the infra red detector activated flood lights that have been around for some time. The difference is that this unit is very directional and can detect stationary objects as well as those moving.

...Range of human detection on a cool night is well over 200 meters.

Schematics exist on the web, but at first glance, they appear beyond the range of anyone without a Phd in soldering.


So what to do? Well in fact you can make one, and for less than $15. In my next post, I show you how to make a Bodyheat detector in many ways better than ones costing 1000% more, with potentially unlimited range. Yes over 250 Meters.