Edge Computing on Rusty Eddy

The Five Layers of a Practical IoT System

Sat, 15 Nov 2025 00:00:00 +0000

A practical five-layer model for IoT architecture, grounded in the OttO edge runtime and the Gardener reference application.

IoT System Architecture (Device to Cloud)

Fri, 13 Jan 2023 00:00:00 +0000

This page is a diagram-first overview of the IoT architecture used throughout the projects on this site. It is for engineers who need to decide where device logic ends, where edge coordination begins, and how telemetry, control, APIs, storage, and user interfaces fit together.

The goal is not to present a single correct design. The goal is to show a reasonable baseline that can grow beyond demos without locking the system to one board, one sensor, one database, or one user interface.

Adding MQTT to the IoT Gateway

Tue, 29 Mar 2022 00:00:00 +0000

A practical MQTT implementation note for the OttO IoT gateway, covering topic design, subscriptions, callbacks, testing, and memory boundaries.