Field Notes & Engineering Formulas

Hardware Engineering Journal

Practical formulas, wiring calculations, acoustic attenuation principles, and component-level diagnostic procedures published directly by our workshop instructors.

Electrical Load Calculations and the 80% Rule for Residential ASIC Deployments
Electrical January 14, 20258 min read

Electrical Load Calculations and the 80% Rule for Residential ASIC Deployments

A step-by-step technical breakdown of continuous load safety factors, conductor gauge sizing (10 AWG vs 12 AWG), and circuit breaker curve selection for home mining setups.

By Jae-hoon Kim Read Guide →
Managing CFM Airflow, Negative Pressure, and Duct Static Resistance
Cooling February 3, 20257 min read

Managing CFM Airflow, Negative Pressure, and Duct Static Resistance

How to calculate real thermal CFM exchange rates, prevent dangerous hot-air recirculation loops, and match duct diameters to high-RPM stock cooling fans.

By Min-kyu Ryu Read Guide →
ASIC Hashboard Maintenance: Ultrasonic Cleaning and Thermal Paste Replacement
Maintenance February 17, 20259 min read

ASIC Hashboard Maintenance: Ultrasonic Cleaning and Thermal Paste Replacement

Why dried factory thermal interface material causes localized chip thermal degradation, and how to safely disassemble, ultrasonically clean, and re-paste hashboards.

By Min-kyu Ryu Read Guide →
Acoustic Attenuation: Building Heavy Sound Silencer Boxes for Residential ASICs
Acoustics March 1, 20258 min read

Acoustic Attenuation: Building Heavy Sound Silencer Boxes for Residential ASICs

Deconstructing the 75–85 dB fan whine into frequency bands, and building an engineered double-walled labyrinth baffle box with mass-loaded vinyl and mineral wool.

By Jae-hoon Kim Read Guide →

Want to Execute These Procedures in Person?

Every formula and diagnostic routine described in our articles is practiced on real hardware at our Gimpo lab benches.

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