New · Validated Hardware Procedure
Ubuntu 26.04 ARM64 on the Orange Pi 5 Plus
A physical-hardware walkthrough for installing Canonical Ubuntu to NVMe and moving EDK2 UEFI v1.1 into onboard SPI NOR for a clean, SD-card-free RK3588 system. Includes the HDMI, USB, UEFI-shell, and SPI-flashing details that mattered in practice.
Companion Guide · Verified on Hardware
Orange Pi 5 Plus GPIO, I²C and SPI on Ubuntu 26.04
Enable the RK3588 40-pin header without replacing the working base device tree. This tested procedure configures I²C2 on pins 3/5, SPI0_M2 on pins 19/21/23/24/26, and keeps unused header lines available through modern libgpiod.
Validated on Hardware · Embedded Systems
Radxa ROCK 5B Plus: Debian GNOME on NVMe
Start with Radxa's official Debian Bookworm image, update the onboard SPI bootloader, replace KDE with Debian GNOME, clone the configured microSD system to NVMe, and expand the final ext4 root filesystem across the SSD.
Engineering software · Industrial systems · Indiana, USA
Technical knowledge built for real equipment.
Field-oriented white papers, implementation guides, and engineering references covering controls, embedded Linux, machine reliability, safety, software structure, instrumentation, and applied physics.
Embedded Systems
3 publicationsRadxa ROCK 5B Plus: Debian Bookworm GNOME on NVMe
Convert Radxa's official Debian Bookworm KDE image to GNOME, update the SPI bootloader, clone the working microSD system to NVMe, and expand the final root filesystem.
Correctly Identifying Jetson Orin Nano I²C Buses and Using the ADXL345
A practical method for identifying active I2C controllers on NVIDIA Jetson Orin Nano and confirming an ADXL345 accelerometer by bus scan and register readback.
Headless Wi-Fi Setup on Raspberry Pi 4 with Debian Trixie and nmcli
A command-line procedure for installing, enabling, configuring, validating, and troubleshooting NetworkManager Wi-Fi on a headless Raspberry Pi 4.
Industrial Controls
5 publicationsHydraulic Symbols and Circuit Reading Primer
An original illustrated field reference for tracing hydraulic energy paths, predicting machine behavior, understanding load-holding circuits, and troubleshooting pressure, flow, temperature, and leakage.
Pneumatic Symbols and Circuit Reading Primer
An original illustrated field reference for decoding pneumatic schematics, predicting machine motion, and troubleshooting valves, cylinders, flow controls, and pressure circuits.
Raspberry Pi + Relay DDL: PLC Input Simulation and Fault Injection
A repeatable Raspberry Pi and I2C relay method for simulating PLC inputs, validating sequences, and injecting deterministic or seeded-random fault patterns.
Raspberry Pi 4 + Waveshare 8-Channel GPIO Board: Deterministic Output Control
Validated GPIO mapping, permissions, startup behavior, and holder-process control for deterministic eight-channel output operation on Debian Trixie.
Coil Snubbers for AC, DC, and 220–240 VAC Contactor Coils
An applied guide to inductive kickback, coil discharge polarity, and choosing diodes, TVS devices, MOVs, or RC snubbers for industrial coils.
Machine Reliability
3 publicationsDual Check Valves on Pneumatic Cylinders
Field-oriented guidance for preventing pneumatic cylinder lockup and selecting pilot-operated checks, flow controls, and suitable load-holding architectures.
A Probabilistic Approach to Root Cause Assessment in Industrial Machinery
A structured probability-scoring method for ranking likely fault vectors, improving troubleshooting discipline, and reducing premature component replacement.
Rotary Platen Dynamics in Hydraulic Molding Presses
A practical treatment of rotational inertia, hydraulic flow and torque, and proximity-sensor-gated soft-stop tuning for high-inertia rotary platen molding presses.
Quality, Six Sigma & Process Improvement
1 publicationMachine Safety
1 publicationSoftware Engineering
1 publicationEngineering Reference
2 publicationsMagnetic Fields Refresher: E, H, B, Materials, and Practical Design
An engineering refresher covering electric and magnetic field variables, material relationships, magnetic circuits, air gaps, hysteresis, saturation, and eddy currents.
Wheatstone Bridge Theory and Load Cell Application
A detailed technical reference on bridge balance, strain-gage behavior, millivolt-per-volt output, instrumentation, shielding, calibration, and PLC integration.