ROS integration of LaMa, a Localization and Mapping package from the Intelligent Robotics and Systems (IRIS) Laboratory, University of Aveiro. It provides 2D Localization and SLAM. It works great on a TurtleBot2 with a Raspberry Pi 3 Model B+ and an Hokuyo (Rapid URG).
This is the directory repository at IEETA. Go to:
https://github.com/iris-ua/iris_lama_ros
for instructions on how to install and use.