vinodtech
Projects

IoT Home Automation Hub

A modular hub that unifies Wi-Fi and BLE devices with secure provisioning and OTA updates.

Artifacts

Architecture DiagramDownloads
IoT Home Automation Hub project overview image

Focus

Architecture, provisioning, security

Impact

Improved device onboarding reliability and reduced support time.

Stack

ESP32BLEMQTTTLSC/C++

Timeline

A structured view of the phases and decisions that shaped the outcome.

  1. Discovery

    Audited the existing prototype and mapped the device onboarding flow.

    Project overview

  2. Architecture

    Designed the modular service layer and OTA update pipeline.

    Architecture snapshot

  3. Delivery

    Integrated secure provisioning and validated OTA reliability.

    OTA flow snapshot

Diagrams

Key systems and data flows that framed the implementation.

Provisioning Flow diagram thumbnail

Provisioning Flow

BLE handshake to Wi-Fi commissioning with device certificates.

OTA Pipeline diagram thumbnail

OTA Pipeline

Staged updates with rollback checks and integrity validation.

Evidence

Evaluation-focused summary of security, reliability, and testing evidence.

Security & Provisioning

  • Device onboarding modeled around certificate-backed provisioning.
  • Provisioning path reviewed for handshake and identity flow clarity.
  • [Baseline]: previous commissioning path; [Result]: improved onboarding reliability.

OTA & Reliability

  • OTA pipeline includes staged rollout and rollback checks.
  • Failure scenarios examined for interrupted update behavior.
  • [Metric]/[Baseline]/[Result] tracked in release validation notes.

Validation & Testing

  • Functional validation run across provisioning and update phases.
  • Regression checks aligned to delivery milestones.
  • Evidence placeholders: [Test log], [Dataset], [Runbook].

Downloads & References

Artifacts shown only when available.

Reproducibility

Execution checklists for repeatable validation.

Provisioning reliability check
  1. Reset a test node and repeat BLE-to-Wi-Fi provisioning.
  2. Capture handshake and commissioning logs for each run.
  3. Compare success/failure traces against expected certificate flow.
OTA rollback safety check
  1. Apply staged update to test devices.
  2. Interrupt update during transfer and verify rollback path.
  3. Confirm device returns to a known-good firmware image.
ScheduleCall