MDCS (Modular Dynamics Control Suite) Setup and Walkthrough

MDCS provides a Real-Time (Soft) Hardware-Emulated environment—a Software-in-the-Loop (SIL) Digital Twin that faithfully models a system using Lagrangian mechanics and the RK4 solver. Unlike theoretical scripts, this is designed to be interacted with as if it were a real plant sitting on your desk. It utilizes C, the industry standard for embedded systems, ensuring the transition from simulation to real hardware is seamless. To enrich the student experience further, the project includes a High-Fidelity 3D Visualizer and Real-Time Telemetry Graphs. By mimicking noisy feedback and hardware signals, a bench-like environment is provided that challenges you to solve real-world problems like sensor jitter and encoder drift. The framework is completely configurable; you can tweak the system specs and noise levels directly in the source code. Since the core executable is only ~20 KB (minus the visualizers and the external shared libraries), it's incredibly lean. By writing your compensator in native C, you get a real feel for how industrial control actually works—managing fixed-step timing and deterministic loops rather than just dragging blocks in a GUI. The core physics engine is optimized for single-thread execution to ensure deterministic timing, mirroring bare-metal microcontroller behavior. Meanwhile, the visualization layer utilizes asynchronous threading to handle UI rendering without blocking the 20kHz data stream. This decoupled architecture ensures high-fidelity physics even when running on standard consumer-grade x86 hardware without the overhead of heavy simulation suites. The SIL project is built for Linux Desktop environments and utilizes a high-precision timing super-loop to emulate a Real-Time (Soft) bare-metal microcontroller environment. To mitigate general-purpose OS jitter, the framework employs a lockstep architecture where the physics solver and compensator are synchronously coupled; if the OS introduces a scheduling delay, the entire simulation state remains frozen to preserve temporal determinism. The system implements a self-healing absolute timeline that automatically corrects for OS-induced blocking to prevent cumulative timing drift against the wall clock, maintaining seamless visual realism regardless of background CPU load. Website - https://embeddedfreedom.dev github repo - https://github.com/embeddedfreedom/MDCS/tree/master