ROS101

A developer community for robotics engineers — long-form technical writing and discussion on ROS, SLAM, embedded systems, and control. Daily posts, real hardware-tested answers, and open discussion.

• ROS2 Jazzy vs Humble: What Actually Changed for Real Robots

  Use Jazzy for new projects in 2026 — better Nav2 defaults, faster rclpy serialization, and Gazebo Harmonic by default.

  By Andy Chen · 7/13/2026

• RPLIDAR A1 vs A2: Which One Should You Buy for a 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.

  By Andy Chen · 7/12/2026

• 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.

  By Andy Chen · 7/10/2026

• SLAM & Navigation

  Best SLAM algorithm for a low-cost LIDAR setup?

  Started by Kwame Asante · 7/9/2026

• ROS/ROS2

  ROS2 Jazzy on Jetson Orin Nano — anyone got hardware-accelerated compressed image transport working?

  Started by Dev Okafor · 7/8/2026