In the last post, we discussed how to apply an architectural design mindset to the process of designing greenfield systems. In this post, we cover applying the same mindset to an existing legacy system. Tackling Architecture in a Legacy System Unfortunately, most of the time, developers do not get to
In the last post, we covered common design problems that you may encounter while working on software systems. We discussed common traps that seem like good solutions to those problems, as well as the correct methods for addressing the problems. In this part, we will explore how to apply the
In the last post, we covered some of the basics of architectural vocabulary and the importance of information hiding in component design. In this part, we will discuss some concrete patterns that frequently appear in software design and how to apply information hiding to them. In this context, pattern means
“It was the best of times, it was the worst of times… it was the spring of hope, it was the winter of despair…” — Charles Dickens on writing code, probably. Anyone who has worked with a software system for a significant amount of time knows that software is a double-edged
We are pleased to announce the release of SigGate firmware version 1.1.0.0, bringing LoRa Basics Station support, flexible network transport options, and significant reliability improvements to the SigGate LoRaWAN gateway platform. LoRa Basics Station SigGate now supports the LoRa Basics Station protocol alongside the legacy Semtech UDP
When working on embedded systems that run unattended in the field, powering sensors, cameras, or industrial devices, one silent failure can be costly. A corrupted filesystem or bad update shouldn’t require a technician with a USB stick to fix it. That’s the philosophy that guided our design for
Signetik's LoRa(TM) gateway now supports LoRa Basics(TM) Station and Semtech UDP both! Let's walk through the procedure to update your gateway and configure the LNS connection to use basics station (BS). Gateways can be managed using Signetik's gateway manager utility: https://d3e8vwuudl783.
Zephyr RTOS · SDK · Embedded Testing Zephyr ztest Contents 1. What is ztest? 2. Architecture & File Structure 3. Creating a Test Suite 4. Adding Tests to a Suite 5. Assertions, Expectations & Assumptions 6. Test Fixtures 7. Test Lifecycle 8. Advanced Features 9. Mocking with FFF 10. Running Tests with
Overview MQTT (Message Queuing Telemetry Transport) is a lightweight publish/subscribe messaging protocol designed for constrained devices and low-bandwidth, high-latency networks. It is widely used in IoT applications for efficient device-to-cloud and device-to-device communication. This guide covers how to configure an MQTT client on a Signetik device, publish messages from
By Jared Poulsen (July 2025) PCB Manufacturing is complicated. Parts go end of life, regulations and compliances are never ending, and components keep getting smaller, with tighter tolerances. On top of that, you need to manage supply chain lead times and recently, ever-changing tariffs. In a perfect world, we could
Introduction Signal processing has been around for many decades. Initially performed with hardware, it later migrated to software using DSPs (Digital Signal Processors). Even MCUs could perform basic signal processing tasks. In the early 2000s, we were processing audio on an ARM9 while processing video on a DSP, using Texas
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