IoT (Internet of Things) Mentor-IoT system optimization and design

Example

Design a vineyard soil‑moisture network: LoRaWAN leaf nodes (capacitive probes + STM32), solar trickle charge, a multi‑channel gateway with cellular backhaul, MQTT ingestion to a serverless API, and a rules engine that triggers irrigation valves.

Scenario

Given field size (200 acres), gateway placement constraints, and target sensor density (1 per 2 acres), IoT Mentor produces a coverage plan, link budget assumptions, payload schema, and a cloud data model (devices, measurements, alerts, jobs).

Example

Choose between ESP32‑S3 (Wi‑Fi/BLE) and nRF52840 (BLE) for a wearable tag: compare power profiles, RF coexistence, memory for OTA, toolchain maturity, and unit cost at 1k/10k/100k volumes.

Scenario

Constraints: <$8 radio + MCU, >7‑day battery life on 250 mAh. IoT Mentor recommends nRF52840 + BLE advertising + connection‑interval tuning, provides a current‑budget table, and flags the need for external LDO with low quiescent current.

Example

Decide among Wi‑Fi, BLE, LTE‑M, NB‑IoT, and LoRaWAN for indoor asset tracking across a warehouse.

Scenario

Requirements: room‑level accuracy, 3‑year coin‑cell life, concrete walls. IoT Mentor proposes BLE beacons + AoA for location, with LoRaWAN uplink via roof gateways for backhaul; includes channel plan, antenna guidance, and duty‑cycle compliance notes.

Example

Implement an event loop with deep sleep, RTC wake, sensor read, delta encode, and burst transmit; add dual‑bank firmware with CRC and rollback on failure.

Scenario

Target: <100 µA average draw. IoT Mentor provides a state diagram, pseudo‑code for sleep/ISR boundaries, recommended connection intervals, and an OTA rollout plan (canary 1%, staged regions, signed images).

Example

Ingest telemetry via MQTT, transform to time‑series storage, expose a REST/GraphQL API, and wire up alerting and dashboards.

Scenario

For a fleet of 50k devices sending 200‑byte packets every 5 minutes, IoT Mentor estimates throughput, partitions topics (tenant/device), proposes a retention/archival strategy, and supplies schemas for measurements, events, and device twins.

Example

Apply STRIDE to a smart‑lock: secure boot, hardware root of trust, per‑device credentials, TLS (PSK or mutual), least‑privilege cloud IAM, and a compromise‑recovery playbook.

Scenario

Regulatory targets: GDPR/CCPA awareness, SBOM availability, and secure OTA. IoT Mentor outputs a security checklist, key rotation plan, and manufacturing provisioning flow (unique keys at test station).

Example

Rough‑order battery life: a LoRa sensor (30 mA TX for 1 s, every 10 min; 8 µA sleep otherwise) on 2400 mAh AA.

Scenario

IoT Mentor builds a simple duty‑cycle model, shows sensitivity to transmit interval and spreading factor, and ties that to BOM choices (e.g., regulator Iq) and cloud costs per device per month.

Example

Map Modbus registers to a normalized telemetry model; pick MQTT QoS levels and retained message use; choose CBOR vs JSON for constrained links.

Scenario

A mixed vendor plant needs a single pane of glass. IoT Mentor proposes gateway mapping rules, topic taxonomies, device shadow structure, and a versioning approach for payloads.

Example

Create a test plan: EMC pre‑scan, OTA failover tests, long‑haul soak tests, packet‑loss simulation, and field trial instrumentation.

Scenario

A pilot of 200 units across three cities. IoT Mentor defines KPIs (connectivity success rate, median RTT, battery discharge curve), adds logging fields, and recommends a rollout/rollback gate per cohort.

Example

Provide templates: architecture RFC, device requirements, provisioning SOP, incident runbook, and a DFM (design‑for‑manufacture) checklist.

Scenario

A hardware‑lean team needs to coordinate vendors (module maker, contract manufacturer, MVNO). IoT Mentor outlines RACI, milestones, and acceptance criteria to reduce integration risk.