Inside an electronic device enclosure with circuit boards, wires, a relay, a motor, and terminal strips.
A digital and analog machine on a blue table. The digital machine displays '429 Label 365: ON' with speed 0 ft/min. The analog machine shows a zero reading and is labeled 'VERTICAL SPEED.' In the background, there is a blurred computer monitor and other equipment.

Portfolio

Every build is designed with reliability, efficiency, and real-world use in mind. Here are a few examples of how TRS Engineering delivers practical solutions for aerospace, instrumentation, and lab environments.

custom test systems

Vertical Speed Indicator Test Box

To reduce reliance on large, expensive, analogue test rigs, I designed and built a dedicated vertical speed indicator test box using microcontroller logic and ARINC 429 communication. This solution provided a faster and more efficient way to verify cockpit instruments, while ensuring accurate, repeatable results.

3-Phase Motor G-Meter Test Rig

Manual testing of vintage aircraft G-meters was slow and inconsistent, so I developed an automated rig powered by a WIFI enabled microcontroller. Connected to a custom web interface and database, it delivered real-time data capture and traceability. The system improved repeatability, cut operator workload, and streamlined the entire testing process.

RMp encoder test box

Testing RMP encoders previously required a servicebale unit asseembly, creating bottlenecks and test rig downtime. I solved this by building a compact, purpose-built test box to validate encoders individually. This approach freed up valuable test rigs, accelerated fault isolation, and enabled faster turnaround on component-level issues.

Software tools

Fault Code Database & Failure Analysis Program

Troubleshooting avionics faults was often inconsistent and time-intensive. To address this, I created a Python-based analysis program that aggregates failure data from automated rigs, aligns it with quoted components, and calculates probability-based fault fixes. The result was a smarter, data-driven repair process that reduced turnaround times and improved accuracy.

Electronics Design

Custom ARINC 429 TX/RX PCB

Traditional ARINC 429 analysers are handheld devices that cannot easily interface with other software, forcing operators to check each label individually. This process is slow, manual, and prone to inconsistency. To overcome this, I designed a custom ARINC 429 transmit and receive PCB that connects directly to a microcontroller. The data can then be displayed in a clean, structured format on a test box, making it far easier to interpret. This approach not only speeds up testing but also ensures results are consistent, reliable, and directly integrated into wider automated systems.

A vertical speed indicator device with a blue digital screen displaying text, a black knob labeled 'VERTICAL SPEED,' and four buttons underneath the screen, placed on a blue work surface in a workshop environment.
Industrial control panel with a digital display, three black buttons, a large red emergency stop button, and a toggle switch, placed on a white surface.
Laboratory setup with mechanical components, including a motor, metal framework, and testing equipment on a workbench.
Internal view of an electronic control box with wiring, circuit boards, and components, including a digital display device and power supply.
A black electronic device with a blue LCD screen displaying 'RMP Encoder Test' and 'PN: 220880'. The device has four buttons and is connected to a power supply and other equipment via red and black wires.
A laboratory setup with a black device connected to a digital multimeter displaying voltage and temperature readings, on a blue work surface, with workshop tools and equipment in the background.
Black electronic device with a blue LCD screen, three black control knobs, a small metallic switch, and two data ports, placed on a blue surface.
Bar chart titled 'Replaced Circuit Cards After NOGO Failure 901023'. The chart compares the replacement percentages of two circuit parts, with the '4084070-902 - FM card' at 60% and the 'C5970AAM01 - Ext FE Com PCB' at 40%. The X-axis represents 'Replacement Percentage', and the Y-axis lists the part descriptions.
Screenshot of PCB design software displaying a printed circuit board layout with various electronic components, traces, and layers.
Screenshot of an Excel spreadsheet with columns containing part numbers, descriptions, part numbers, test results, prefixes, unit groups, with some cells highlighted in blue and green
Screenshot of NOGO Failure Analysis software interface with options to select a failure code, find unit groups, analyze failure, and select a unit group.
Internal electronic circuit board with various wires, resistors, capacitors, and integrated circuits.
Electronic circuit diagram with various components, resistors, capacitors, and integrated circuits connected with wiring.

RMp DISplay test box

RMP display testing previously required running full functional tests, with any adjustments forcing repeated restarts and heavy use of automated test rigs. To solve this, I built a dedicated RMP Display Test Box that placed the unit directly into display test mode. This allowed adjustments to be made immediately, freeing up rig capacity and significantly speeding up the testing process.