Cheap radar

[BrianG]

Lol, you did far more research into that than I was planning to! I was just going to strap it to the truck facing down at an angle and see what I could get out of it. If the reading was somewhat accurate, pull it out of the case and mount it in something a little more truck-friendly. I figured it would "see" the ground speed. I know it works off the Doppler-effect, but wasn't sure how finnicky it would be about the angle and such. Maybe this idea would work better with an optical pick-up instead - like how an optical mouse works...

So, based on your experience, will this work? This would really be something to mess around with - I'd rather not spend the cash on a worthless venture...