R&DDeterministicSimulation
Deterministic Laser Control System
Deterministic co-processor control with <10µs jitter, Raspberry Pi UI, and digital twin.
R&D Engineer
IoT & R&DReal-time MCURaspberry PiPythonFastAPI
Split-brain: Pi orchestrates, real-time MCU executes deterministic loop.
Node
Raspberry Pi UI
Node
FastAPI
Node
Real-time MCU
Node
Digital Twin
Raspberry Pi UIFastAPIconfig
FastAPIReal-time MCUdeterministic commands
FastAPIDigital Twinmirror pulses
DataControlSecurity
Context
Problem & context
- Industrial laser needed deterministic pulse control with guarantees under 10µs jitter.
- UI should remain responsive without disturbing real-time loop.
Architecture
Architecture & stack
- Real-time MCU handles deterministic pulse generation.
- Raspberry Pi hosts UI + supervisory FastAPI service.
- Python digital twin simulator mirrors field behavior.
Features
Key flows
- Deterministic pulse trains with jitter monitoring.
- Split-brain: Pi controls configuration, real-time MCU executes timing.
- Digital twin for safe testing of patterns.
Challenges
Engineering challenges & solutions
- Tight jitter constraints under noisy power conditions.
- Synchronizing configuration pushes without interrupting real-time loop.
- Keeping simulator aligned with firmware versions.
Impact
Impact & metrics
- Achieved <10µs jitter with optimized firmware routines.
- Safer rollouts via digital twin before field deploy.
- Clear separation of UI and deterministic control paths.
Next
What I’d improve next
- Add redundant watchdog co-processor.
- Expose telemetry to cloud dashboard for remote ops.