Work / Electronics / Embedded / IoT Edge Gateway
IoT · Edge Computing
IoT Edge Gateway
An MQTT-based edge gateway on Raspberry Pi that aggregates multi-sensor data, applies local filtering, handles reconnection, and publishes to a cloud broker with QoS guarantees.
Section
Electronics / Embedded
Stack
MQTT · Raspberry Pi · Python · Edge Computing
Category
IoT · Edge Computing
Status
Deployed in a test environment with three sensor nodes
01 — Challenge
The core engineering challenge
Forwarding raw sensor data to the cloud without local processing wastes bandwidth and creates cloud-side bottlenecks — edge filtering changes both the economics and the reliability profile.
03 — Decisions
Engineering decisions and what they cost
01Windowed average reduces outbound message volume by approximately 70% with no meaningful signal loss.
02Persistent MQTT sessions with QoS 1 ensure no readings are lost across short disconnects.
03Local REST API allows sensor configuration without requiring a cloud round-trip or SSH session.
04 — Stack
MQTTRaspberry PiPythonEdge ComputingIoTREST API