Telemetry / MQTT lab notes — Course 2 M05

Course 2 · Module 5

Lesson · Lab · TOC

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Setup

Item	Your value
Path (Simulator / Board / Both)
Bitstream Studio version
Broker (Studio local / LAN / other)
Device id / default topic
Dashboard / subscriber used	ex08 · ex09 · other:

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A — Classify (topics + samples)

Kind	Topic	Sample payload (short)	Rate / when
Telemetry
State
Event

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B — Live Data (ex08)

Check	OK?	Notes / evidence
connected
Connection route
COM open
Last sample origin (uart / sim)
Forced stale → fresh

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C — MQTT (ex09)

Check	OK?	Notes / evidence
Start broker
Subscriber connected
Topic subscribed
Message count ≥ 1
Payload fields / units match
Publisher tool used

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D — Schema / QoS drill (optional)

What you changed	What broke	What still worked

QoS / retain notes (ex14):

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E — Lossy / error injection

Trial	What you injected	What you observed	Drop / retry / reconnect / stale?
1
2
3

Suspected weak point before M06:

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Quick recall

Classify → prove Live Data (ex08) → Start broker → prove MQTT (ex09)
         → break one thing (schema or link) → write what recovered

Pipe	Default check
Live Data	TelemetryClient + route / origin / stale
MQTT	ws://127.0.0.1:8883/mqtt after Start broker

Backend	Use alone
Simulator	COM closed · expect origin: sim
Bitstream	COM open · expect origin: uart

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Portals

• Bitstream Studio
• Hackathon — web-app/ex08 … ex15
• Developer Hub
• Course 1 M06 MQTT

Lesson · Lab · M06