Technical Articles

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

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How to Test Power Good Signal on PSU with Multimeter

Learn how to diagnose Power Good signal failures in your power supply unit using only a digital multimeter on your workbench.

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Eletrônica•5 min

How to test a quartz crystal oscillator with a multimeter

Learn how to test quartz crystal oscillators on the workbench using a digital multimeter, measuring DC voltages and troubleshooting circuit faults.

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Eletrônica•3 min

How to test a quartz crystal oscillator with an oscilloscope

Learn how to diagnose clock failures in microcontrollers using an oscilloscope. A practical guide to verifying crystal resonance on your workbench.

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EletrônicaHardware•4 min

How to measure current with a multimeter safely

Learn how to configure your multimeter for DC current measurements safely. Understand why series measurement is vital and how to prevent board damage.

EletrônicaHardware•5 min

How to test BIOS chip voltage on motherboards with a multimeter

Learn how to identify power delivery failures on motherboards by measuring VCC pins on SPI Flash memory chips using a digital multimeter.

EletrônicaHardware•2 min

M.2 SSD not detected? How to test the 3.3V slot voltage

Is your M.2 SSD missing? Learn how to diagnose power issues on the 3.3V rail of the M.2 slot using a multimeter to identify motherboard failures.

EletrônicaHardware•4 min

How to test PC fan PWM signal with a multimeter

Learn how to troubleshoot PWM fan control issues using a standard multimeter. Identify if your motherboard is sending the correct speed signal without needing an oscilloscope.

EletrônicaHardware•3 min

How to Clean Retro Console Cartridges and Slots Safely

Learn the professional way to remove oxidation and debris from classic cartridge pins and console slots to keep your vintage collection working perfectly.

EletrônicaHardware•3 min

How to test a MOSFET on board with a multimeter: guide

Learn how to detect shorts and leakages in MOSFET transistors directly on the board. A practical guide for fast diagnostics in PSUs and motherboards.

HardwareEletrônica•2 min

PC won't turn on? How to measure the ATX PSU PS-ON pin

Computer not starting? Learn how to diagnose if the issue lies in your motherboard's PS-ON signal or a dead power supply with this technical guide.

EletrônicaHardware•3 min

How to test tantalum capacitors for shorts with a multimeter

Learn how to diagnose short-circuited tantalum capacitors on modern boards using only a multimeter. Master safe techniques to isolate faults in power rails.

EletrônicaHardware•2 min

PC won't turn on? How to test the chipset 3.3V line

Learn how to diagnose motherboard startup failures by investigating the standby circuit and the buck regulator powering the PCH/Chipset.

EletrônicaHardware•2 min

What is the I2C bus and how to read sensors with Arduino

Master the I2C serial communication protocol, learn the roles of SDA and SCL lines, and discover how to connect real sensors to your Arduino setup.