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The robot is controlled in this way we also, when we want to move along a specified line. Whether it followed, or as shown in lines (black szigetelőszallag taped) within an area bounded by. Unfortunately, this robot is very rude to the mechanics and regulation is inadequate. They are noticeable in the video, unfortunately sometimes goes beyond the tape. The LDR is a component that turns light resistance. The tape is not reflected back but this could be a very smooth glossy surface or table top is ...
This is a companion discussion topic for the original entry at https://community.robotshop.com/index.php/robots/show/avr-robot-ldr-line-control