# ROS101

> A developer community for robotics engineers — long-form technical writing and discussion on ROS, SLAM, embedded systems, and control.

## Blog
- [ROS2 Jazzy vs Humble: What Actually Changed for Real Robots](https://ros101.com/blog/ros2-jazzy-vs-humble-what-actually-changed): Use Jazzy for new projects in 2026 — better Nav2 defaults, faster rclpy serialization, and Gazebo Harmonic by default.
- [RPLIDAR A1 vs A2: Which One Should You Buy for a Budget SLAM Robot?](https://ros101.com/blog/rplidar-a1-vs-a2-budget-slam-robot): The A1's 12m range and ~$99 price is still the right default for indoor SLAM in 2026 — here's when you actually need the A2/A3 instead.
- [Tuning a PID Controller for a Quadruped Robot](https://ros101.com/blog/tuning-a-pid-controller-for-a-quadruped-robot): Start with P only, increase until it oscillates, back off to 60%, then add D and only add I if load causes steady-state droop.

## Forum Categories
- [SLAM & Navigation](https://ros101.com/forum/slam)
- [ROS/ROS2](https://ros101.com/forum/ros2)

## Recent Forum Discussions
- [Best SLAM algorithm for a low-cost LIDAR setup?](https://ros101.com/forum/slam/best-slam-algorithm-for-a-low-cost-lidar-setup) — SLAM & Navigation
- [ROS2 Jazzy on Jetson Orin Nano — anyone got hardware-accelerated compressed image transport working?](https://ros101.com/forum/ros2/ros2-jazzy-jetson-orin-nano-hw-accelerated-image-transport) — ROS/ROS2

## About
ROS101 is written and moderated by its community, starting with its founder, who publishes daily long-form technical robotics writing. Full data exports and machine-readable sitemaps are available at https://ros101.com/sitemap-index.xml.