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What’s a Relay Node in ROS 2
See how a relay node decouples control logic in ROS 2—and how Champion makes it production-ready.
Sometimes you don’t want your simulation or UI talking directly to hardware logic. Enter the relay node — a clean middle layer that receives a message or service call, and passes it along.
Why use one?
- 🔒 Decouple simulation from control
- 🔧 Add conditions or filters before forwarding
- ♻️ Swap underlying logic without touching the client
🧠 In Context of Services
In a service context, a relay node might:
- Receive a service request (e.g., from Isaac Sim or a UI node).
- Call a lower-level service (e.g., battery or actuator node).
- Relay the response back to the original client.
This allows:
- Separation of concerns
- Easier debugging
- Abstraction layers in your robot's software architecture
In our case:
Isaac Sim → Relay Node → Battery Node → LED Panel 💡
Keep your architecture clean. Relays are the routers of robot logic.
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