Instruments &
measurement
Turn a measurement problem into a repeatable process. Optical metrology, camera characterization, spectroscopy, and synchronized data acquisition.
Independent engineering & designNew York, NY
From first
principles.
To working
systems.
Good ideas deserve good engineering. I turn complex research problems into instruments, electronics, and software that work together.
Schematic to software. One connected system.
DD—001 / SYSTEM STUDYOPTICAL METROLOGY
EVERY LAYER, CONNECTEDCONCEPT ILLUSTRATION
Optical instrumentationCustom electronicsEmbedded systemsScientific software
01 / CapabilitiesThe whole stack.
The whole stack.
Built to work as one.
Hardware and software meet at the edges. That’s where I do my best work.
Instruments &
Electronics &
embedded systems
The physical layer, designed with the application in mind. Custom PCBs, instrument control electronics, embedded firmware, and hardware bring-up.
Software &
lab automation
Software that makes the instrument useful. Scientific desktop applications, acquisition pipelines, analysis tools, APIs, and automation for the lab around them.
02 / Selected experienceBuilt at the bench.
Built at the bench.
Proven in the details.
A selection of Joseph’s engineering work at Vyir Inc.
This is the experience behind Demarest Designs.
FIG. 01 / BEAM CHARACTERIZATION
INTENSITY / POSITION
ILLUSTRATIVE DATAMaking light measurable.
Camera-based laser beam profiling, from a Raspberry Pi feasibility prototype to an in-house instrument with live acquisition and beam-width analysis.
Inside the engineering
PyQt6 and PyQtGraph bring live images, centroid calculations, saturation handling, and structured exports into one desktop tool. Mock camera support makes the application testable away from the bench.
Read the original project notesFIG. 02 / SYNCHRONIZED ACQUISITION
ILLUSTRATIVE DATARight place. Right instant.
Continuous-motion measurement with hardware-triggered acquisition. A rotation stage clocks a DAQ so measurements map to known angular positions.
Inside the engineering
Zaber motion control, NI-DAQmx, and photodiode detection form the measurement chain. The engineering work includes investigating trigger-count reliability and designing validation around timing and detector bandwidth.
Read the original project notesAlso: infrared camera characterization, spectroscopy, and instrument electronics.More of Joseph’s work
03 / How I workA clear path from
A clear path from
“what if” to “it works.”
Start with the question.
Understand the physics, the constraints, and what success actually looks like. Agree on a practical scope before building.
Connect the pieces.
Prototype the uncertain parts, then bring the electronics, firmware, and software together as a complete system.
Make the result hold up.
Check the measurement, exercise the failure paths, and document what was built so the next step is yours to take.
Direct collaboration. Connected thinking.JOSEPH DEMAREST
FOUNDER / ENGINEER
FOUNDER / ENGINEER
One point of contact.
Every layer of the problem.
I’m Joseph, the engineer behind Demarest Designs. As founding engineer at Vyir Inc, I’ve worked across the instrumentation stack: optical measurement, custom electronics, firmware, and the software that ties it all together.
I bring that same systems perspective to independent work. You talk directly to the person designing and building your project.
Explicit units.Fail-safe hardware.Reproducible results.
Find me on GitHub Have a problem worth solving?Let’s make
Let’s make
something work.
A new instrument. A stubborn integration.
A prototype ready for its next step. Let’s talk.