![[ROS2 Mastery Part 5] ROS2 Topic Programming (2) – Receiving Location Information with a Subscriber](https://quad-drone-lab.co.kr/wp-content/uploads/2026/05/0516_인포그래피-768x429.jpg)
Hello! Welcome to the 5th post in our “ROS2 Crash Course” blog series, brought to you based on materials from the QUAD Drone Lab, for university students and researchers studying and developing autonomous mobile robots and system control. In our last post (Part 4), we learned how to write a Publisher node—the core of ROS2…
Hello, this is QUAD Drone Laboratory.I’m Geunchan Lee, Senior Researcher at QUAD Drone Lab. In the previous article, we covered the overall power supply flow of the 911 FALCON drone’s electrical system. We confirmed the structure in which power is supplied to each component, divided into the FC circuit and PDB circuit based on the…
![[Hybrid Navigation System Series Part 5: Implementation-Stage 1] Cruising Phase: Classical Dead Reckoning, Wind Estimation, and Gazebo Wind Simulation](https://quad-drone-lab.co.kr/wp-content/uploads/2026/05/Drone-Vector-Navigation-Crab-Angle-768x429.png)
Hello to all the graduate students and researchers burning the midnight oil at the forefront of autonomous unmanned aerial vehicle (UAV) systems! Welcome back to QUAD Drone Lab. In our previous post, <Part 4>, we successfully completed the infrastructure work by building a ROS 2 & Micro XRCE-DDS bridge to inject high-performance external INS data…
![[ROS2 Mastery Part 4] ROS2 Topic Programming (1) – Controlling the Turtle with a Publisher](https://quad-drone-lab.co.kr/wp-content/uploads/2026/05/0510_인포그래픽-768x429.png)
Hello, fellow students and researchers exploring the world of autonomous driving and robotics! In Part 3, we created an empty ROS2 package and built a very basic node that outputs logs over time using Python. Starting with this fourth installment, we will dive into the core of robot control: ‘Communication.’ In this first session, we…
![[ROS2 Mastery Part 3] A Guide to Creating Your First ROS2 Package and Programming a Python Node](https://quad-drone-lab.co.kr/wp-content/uploads/2026/05/0507_인포그래픽-768x512.png)
Welcome, undergraduate students and researchers majoring in robotics and studying autonomous driving and system control. Welcome to the third installment of the ‘ROS2 Fast Track Master Course’ blog series, based on materials from the QUAD Drone Research Lab. In Parts 1 and 2, we covered how to build a ROS2 Workspace, core communication concepts, and…
Hello, this is QUAD Drone Laboratory.I’m Geunchan Lee, Senior Researcher at QUAD Drone Lab. In the previous article, we covered the battery housing design process for the 911 FALCON drone. From XT90 contact design and bolting structure to the locking system, ideal diode, and ventilation holes, all elements required for hot-swap operation were incorporated into…
![[ROS2 Mastery #2] Understanding ROS2 Communication Nodes and Mastering RQT for Visualization](https://quad-drone-lab.co.kr/wp-content/uploads/2026/05/0505_인포그래픽-768x419.jpg)
Hello! I’m Aiden from the Marketing Team. To all the university students researching robotics and autonomous driving, and the researchers working hard in the field—did you successfully finish building your ROS2 workspace in Part 1? Now, it’s time to connect the “neural network” so your robot system can breathe. Modern robot software isn’t just one…
![[Everything About Drone Batteries]Part 3: The Evolution to High-Voltage Systems: The World of 6S, 8S, and 12S](https://quad-drone-lab.co.kr/wp-content/uploads/2026/05/Inside-the-Intelligence-Battery-Diagram-768x429.png)
Hello to all the drone developers and engineers who seamlessly bridge hardware and software to push the boundaries of flight! In our previous installment, we uncovered the hidden truths behind the Discharge Rate (C-Rating) and explored the physical impact that Internal Resistance (IR) has on flight dynamics. In the third part of our series today,…
![[Everything About Drone Batteries]Part 2: Key Indicators Determining Flight Performance: Discharge Rate (C-Rating) and Internal Resistance (IR)](https://quad-drone-lab.co.kr/wp-content/uploads/2026/04/Battery-C-Rating-Label-vs-Reality-1-768x429.jpg)
Hello to all the graduate students and researchers dedicating yourselves to the research and development of drones and next-generation air mobility (UAM, eVTOL)! In Part 1, we covered the foundational Series/Parallel (S/P) architecture of drone batteries and compared the chemical characteristics of LiPo and Li-Ion cells. Today, we will dive deep into the hidden truth…
![[Hybrid Navigation System Part 4: Integration] Integrating PX4 and External INS Odometry via ROS 2 and Communication Verification](https://quad-drone-lab.co.kr/wp-content/uploads/2026/04/Drone-Navigation-Data-Integration-Flow-1-768x429.jpg)
Hello! To all the graduate students and researchers fighting on the front lines of autonomous unmanned aerial vehicle (UAV) systems, welcome back to the QUAD Drone Lab. In our previous post, <Part 3>, we explored the mathematical limitations of low-cost sensors in completely GNSS-Denied environments—specifically the dreaded ‘drift’ caused by double integration. To overcome this,…
