This documentation set outlines a sophisticated autonomous charging framework created for mobile robots operating in educational settings, research laboratories, and autonomous navigation projects. The system is built around two coordinated components: a ground‑level charging station and a robot‑mounted charging module. Working together through an infrared‑guided docking process, the two units ensure precise alignment and dependable energy transfer. The architecture supports both 12V and 24V electrical systems, making it suitable for a broad range of robotic platforms, including the R550 and R550 PLUS series, mecanum‑wheel robots, four‑wheel‑drive configurations, differential drive bases, and Ackermann‑steering vehicles. To accommodate different battery types, the system is available in two connector options: T‑plug with DC5.5‑2.5 for 12‑volt platforms XT60 with DC4.0‑1.7 for 24‑volt platforms Each kit is supplied with pre‑assembled charging and power cables, a Type‑C data cable, mounting brackets, and multi‑standard DC adapters (5521↔4017↔5525). The charging station is engineered to handle up to 25.55V and 3A, and is controlled by an STM32F103C8T6 microcontroller paired with infrared transmitters and receivers for accurate docking detection. The onboard charging module communicates with the robot’s control system via a CAN interface. All circuit diagrams, firmware packages, and source code are openly available, enabling developers to modify the system in C and integrate the charging workflow into their own navigation logic. ROS1 and ROS2 SDKs are included, allowing robots to identify the charger’s location on a map, generate autonomous docking paths, and avoid obstacles during the approach. Mechanical specifications are provided for both the charging station (192×80×142 mm, 1.58 kg) and the onboard module (132×34.5×100 mm, 0.58 kg), including mounting hole layouts for easy installation. Integrated short‑circuit protection and extensive endurance testing ensure safe and stable operation during long‑term autonomous missions. This charging solution is ideal for educational robotics, research‑grade mobile platforms, and outdoor autonomous vehicles that require continuous operation with minimal human oversight.
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