ENGINEERING IN OPERATION
Field systems and
operational telemetry
A solar-powered camera, on-device inference, and a protected path to the browser. Explore the architecture, then inspect the system’s current state.
PUBLIC SYSTEM GUIDE
From a frame to a useful signal.
Camera → local processing
Start at the edge.
The field camera supplies frames to the local Linux system. A frame and an inference result are separate signals: having a picture does not prove the model is running.
Camera media stays access-controlled.
FreshRecent data from the source.
StaleA retained reading; check its age.
UnavailableNo current reading. Never interpreted as zero.
CONNECTED HARDWARE
The operational view.
Each reading reports its own availability. Camera media requires access; the guide above does not.
Inside the field system
An off-grid camera system I built across hardware, embedded Linux, on-device inference, and the web.
- 01SolarVictron telemetry
- 02BatteryLiFePO4 buffer
- 03CameraOn-device inference
- 04RelayProtected web access
The board runs inference locally. A separate relay handles browser delivery, keeping device credentials and controls private. Public readings stay visible; camera playback is opt-in and access-controlled.
Field-camera case study ↗