Best of IoT — July 2024

1. 1
   Article

   Community Picks·2y

   Design a Robust School Bus Tracker System

   This post discusses the architecture for a school bus tracker system, focusing on real-time monitoring and parental notifications. Key functional requirements include frequent location updates, real-time map visualization, proximity notifications, and data isolation between schools. Non-functional requirements involve scalability, high availability, reliability, security, and privacy. The post elaborates on various technical aspects such as API design, geohashing for location indexing, and using Redis for real-time updates. It also covers the system’s read/write ratio, proposing DynamoDB, and explores various scalability strategies using AWS managed services.

   267

   11
2. 2
   Article

   This is Learning·2y

   7 Open Source Projects You Should Know - Java Edition ✔️

   Discover seven notable open-source projects written in Java, spanning various domains from Android testing (Robolectric) to distributed search engines (Elasticsearch and OpenSearch), to IoT platforms (ThingsBoard). Each project includes a brief overview, key features, and starter guides, making them great for both potential use and contribution.

   163

   8
3. 3
   Article

   Hacker News·2y

   TOTP tokens on my wrist with the smartest dumb watch.

   The Casio F-91W can be upgraded using a new ARM Cortex M0+ powered logic board from Sensor Watch, which replaces its original quartz movement while maintaining the classic LCD display and other components. This board is programmable and supports custom watchfaces and utilities, including TOTP (Time-based One-time Password) generation for 2FA codes. The process involves replacing the board, configuring 2FA secrets, and writing new watchfaces. The upgraded watch offers features like a world clock, moon phase indicator, sunrise/sunset calculator, temperature sensor readout, and more, with months-long battery life and no Bluetooth connectivity.

   83

   3
4. 4
   Article

   Community Picks·2y

   Matt Brown Digs Deep Into an IP Camera's Firmware — and Finds a Hard-Coded Root Password

   Matt Brown of Brown Fine Security has demonstrated a serious security flaw in the VStarcam CB73 IP camera by discovering a hard-coded root password. Using a detailed process involving physical hardware examination, firmware dumping, and software analysis with Ghidra, Brown exposed vulnerabilities that highlight the risks of using devices with hard-coded credentials. His findings stress the importance of better security regulations for IoT devices.

   30

   3
5. 5
   Article

   Fermyon·2y

   Exploring the MQTT Trigger for Spin: Simplifying Real-time Communication

   The post explains the use of the MQTT Trigger for Spin framework, which allows real-time communication by subscribing to specific MQTT addresses. It details the steps to install and configure the MQTT Plugin and create a Spin application to handle MQTT messages. The post highlights the efficiency, scalability, and real-time capabilities of MQTT in IoT applications, providing a seamless integration for developers.

   27
6. 6
   Article

   Hacker News·2y

   Reverse-Engineering an IP camera - Part 1

   The author discusses their experience with modern IP cameras, highlighting changes in technology and concerns with P2P (Peer-to-Peer) cameras' reliance on external servers for functionality. They explore reverse-engineering a generic camera model, identify that it runs a Linux-based OS, and analyze network traffic to understand its data handling and security implications. Part 1 concludes with a focus on accessing the camera's operating system and understanding its protocols.

   25
7. 7
   Article

   Community Picks·2y

   An easy intro to edge computing

   Edge computing enhances website performance by processing data closer to the user, reducing latency and improving user experience. It involves using networks of servers (CDNs) to cache and serve content more efficiently. Modern edge networks can run code close to users, enabling personalized content, A/B testing, and better error handling. Technologies like Fastly and Glitch aim to make these advanced capabilities accessible to more developers, paving the way for innovative web applications.

   19

   1
8. 8
   Article

   Grafana Labs·2y

   Industrial IoT visualization: Why United Manufacturing Hub chose Grafana to power its IIoT platform

   United Manufacturing Hub (UMH) has chosen Grafana for its industrial IoT (IIoT) platform due to its flexibility, cost-effectiveness, and ease of use. Unlike traditional industrial tools, Grafana offers visually compelling dashboards and an extensive online community for support. Integrating seamlessly with TimescaleDB, it allows for real-time data visualization from various sources. While Grafana cannot directly interface with industrial controllers, workarounds exist to facilitate this communication. UMH also leverages Grafana Cloud for monitoring internal systems.

   16