Infrared Bed Level Sensor
This IR distance sensor provides an analog output with three levels: no detection, close detection, and detection. This sensor uses a pre-programmed threshold to compared time of flight between two different infrared LEDs. This IR board works on most 3D printing surfaces and is ideally used to create quick mesh maps of the printbed surface to provide software bed-level compensation. It is ideally compatible with most popular open-source boards.