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Free public beta until December 4, 2026: every course is open, no card needed. After that, the first chapter of each course stays free and full access is a one-time $39 ($19 for up to 100 founding members chosen for helpful feedback). Your progress is kept. How the beta works

observability

Being able to tell what a device or service is doing from the data it sends out.

Observability is the degree to which a system's internal state can be inferred from its outputs -- metrics, logs and traces -- without attaching a debugger.

Examples

  • Each greenhouse node reports its reset reason, free heap and WiFi.RSSI(), so you can tell from the back end why a bench keeps rebooting without walking over with a cable.

See also

heartbeat RSSI keepalive fleet
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