Hello,<br><br>I am looking for a video of a tracked light seeking bot that I have seen sometime ago. Although I searched google numereous times I have failed to find it.<br><br>There was a desk light looking down on a table, and this tracked photovore bot was making 8 shaped circles around the light, similar to a fly circling around a light. I have constructed few simple light seeking bots, which basically amplify the difference between two sensors and feed motors with it, but I think the device I was talking about had more complicated brain. Basically, there must be a pid loop or something that smooths the turns of the device.
<br><br>Has anyone seen such video?<br><br>Thanks for all recomendations, ideas and help;<br><br>Best,<br>C.B.<br>