Technical Articles

Practical articles, in-depth tutorials, and architectural insights on software engineering, AI, and systems.

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AutomaçãoHardware•3 min

How to Automate Greenhouse Irrigation with ESP32 and LoRa

Learn how to design a long-range agricultural telemetry network using ESP32 microcontrollers and the LoRaWAN protocol for smart irrigation.

EletrônicaHardware•4 min

How to test discrete semiconductors with a multimeter

Learn how to quickly identify shorts, leakages, and polarity in diodes, BJTs, and MOSFETs using only your digital multimeter's diode test function.

AutomaçãoHardware•4 min

How to read legacy meters via Modbus TCP with async Python

Learn how to build an asynchronous Python script to collect and store telemetry data from legacy industrial meters via Modbus TCP in real time.

EletrônicaHardware•3 min

Broken PCB trace? How to fix with solder and enameled wire

Learn hands-on how to repair broken printed circuit board traces using manual soldering techniques, enameled wire bridges, and mechanical reinforcement.

EletrônicaHardware•3 min

How to diagnose I2C and SPI bus faults on oscilloscope

Learn how to analyze signal integrity, calculate pull-up resistors, and decode physical I2C and SPI buses directly on your workbench oscilloscope.

EletrônicaHardware•4 min

How to calibrate oscilloscopes and probes for fast circuits

Discover the practical bench guide to calibrate oscilloscope probes, eliminate noise, and measure high-frequency signals with surgical precision.

HardwareAutomação•3 min

How to automate energy meters with ESP32 and Modbus RTU

Learn how to integrate IoT hardware using the industrial Modbus RTU protocol and ESP32 microcontrollers for real-time energy monitoring.

HardwareRedes•5 min

How to build a low-cost Proxmox home cluster for testing

Learn how to choose budget mini PCs and configure a high-availability Proxmox VE environment for your home testing lab.

HardwareAutomação•3 min

How to read legacy industrial sensors with ESPHome and MQTT

Learn how to integrate legacy industrial sensors into your building automation system using ESPHome and the lightweight MQTT protocol.

HardwareDevOps•4 min

Server losing RAM? How to fix Linux kernel memory leaks

Learn how to diagnose and resolve hidden RAM memory leaks in production bare-metal servers by investigating the kernel, page cache, and hardware drivers.