<div dir="ltr">Robot uses ceiling lights for localization on a Donkey Car type course.   See:<a href="https://hackaday.com/2021/10/25/fast-indoor-robot-watches-ceiling-lights-instead-of-the-road/"> https://hackaday.com/2021/10/25/fast-indoor-robot-watches-ceiling-lights-instead-of-the-road/</a><div><br></div><div>Regards,</div><div>Doug P.</div></div>