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+Nexus Robot Lib
+==========
+
+This is for Nexus Robot Lib. Its Arduino library and document are hard to find. So here they are.
+
+To add LiDAR sensor, a suggestion is  
+<a href="https://www.getsurreal.com/product/xv-lidar-sensor-enclosure-package/">XV LiDAR</a> 
+from Get Surreal.
+
+To use SLAM, a simple script to use is <a href="https://github.com/simondlevy/BreezySLAM">BreezySLAM</a>. To try it, we first need to install <a href="https://github.com/simondlevy/xvlidar">xvlidar</a> Python package, and then use <code>example/xvslam.py</code>.