Best than your Raven!

[Esteban]

Hi Okantex

I search for Leningrad 7 in the web. There are models Leningrad 1 to Leningrad 10. Leningrad 7 uses selenium as light sensor, maybe this is not very precisse in order to measure quantity of light near IR radiation, but the most important in this case is the sensibility.

But if you wish detect IR radiation from the soil, you can solve the problem with IR receiver module for remote control TV. This is into a small metalic box. I experiment with it and promises very much. You must insert into a obscure tube, no black, because this bright. Better is darken internal paint into the tube.