Okay, I'm adding a second camera and triangulation to the project so I can determine distancetotarget.

In this video I go through what I'm doing to get it done at a low price and with low processing requirements. There are other 3D options in OpenCV that you could use, but here we're only interested in a single point.

Here is the code I used to make this video: https://gitlab.com/duder1966/youtube...