IoT Systems

OttO is a Go-based IoT edge gateway that connects sensor stations, MQTT messages, REST APIs, WebSocket dashboards, and application logic at the boundary between devices and backend systems.

How an ESP32-based collection station fits into an IoT system: sensor sampling, MQTT publishing, local buffering, sleep modes, OTA updates, and the boundary between device firmware and the edge gateway.

A practical five-layer model for IoT systems, showing how devices, protocols, edge runtime, backend services, and applications fit together.

How the OttO IoT gateway uses MQTT to receive telemetry from device stations, parse topic-based sensor identifiers, pass readings through Go channels, and protect the gateway from unbounded in-memory growth.