Ray Sha
3 projects

Ray Sha / work and everyday things

Things I’m making. Things I’m still figuring out.

I build environmental sensors and robots, do field research, and help run events. I also like cooking, cycling, and sending my friends bad jokes.

A laser-cut PET sheet with a repeating kirigami pattern.
The cut pattern in a flat PET sheet.
A transparent PET sheet opened along its cut pattern.
Opening the cuts changes how the sheet bends and stretches.
The environmental sensing robot resting on grass beside a waterway.
The sensing head and moving body outdoors.
A hand holding the robot with a water-quality probe attached.
A water-quality probe mounted alongside the body.
The environmental sensing robot among wet leaves beside a drain.
A field test beside a narrow drainage path.
The long flexible kirigami robot bent across a wood floor.
The finished body bending without a rigid chassis.
The completed robot showing its PET body, drive, and sensors.
The completed environmental sensing device.
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01 / Safety through flexibility

Cutting PET to reach difficult places.

Kirigami cut patterns let a light sheet stretch and bend. I used them to build a low-cost robot that could carry sensors into drains, riverbanks, and canals where direct inspection can be awkward or unsafe.

Project 01See the PET cuts and build notes

02 / Precise measurement

Following what remains after spraying.

My interest in drones, mechanics, and environmental science led me to a research team studying UAV-applied fungicides. I helped collect and extract air, crop, soil, and mulch samples to compare their distribution and dissipation—and to think more carefully about persistence and possible inhalation exposure.

Project 02Follow the field sampling path
Checking the field monitor.
Checking the field monitor.
The experimental rice plots.
The experimental rice plots.
Organizing sample vials.
Organizing sample vials.
The fertilizer spray bay on an agricultural drone
The drone spray bay used for fertilizer.
A paved path beside experimental fields
Between the field and the sampling area.
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The current sensor array: wiring, enclosure, and screen.
The current sensor array: wiring, enclosure, and screen.
The current sensor array: wiring, enclosure, and screen.
The current sensor array: wiring, enclosure, and screen.
The current sensor array: wiring, enclosure, and screen.
The current sensor array: wiring, enclosure, and screen.
The current sensor array: wiring, enclosure, and screen.
The current sensor array: wiring, enclosure, and screen.
The current sensor array: wiring, enclosure, and screen.
The current sensor array: wiring, enclosure, and screen.
The current sensor array: wiring, enclosure, and screen.
The current sensor array: wiring, enclosure, and screen.
The current sensor array: wiring, enclosure, and screen.
The current sensor array: wiring, enclosure, and screen.
The current sensor array: wiring, enclosure, and screen.
The current sensor array: wiring, enclosure, and screen.
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03 / Timely, accessible sensing

From precise samples to repeated measurements.

Laboratory tests are precise, but they take time and resources. I’m now building a low-cost mobile array around a CoreS3, SEN66, BME688, and other sensors for near-real-time, geolocated air- pollution measurements. The longer-term goal is a tool that can support field studies and citizen science.

Project 03Follow the current sensor build
Speaking during a student activity.
Speaking and learning to stay calm onstage.
Students preparing an outdoor event.
Event planning before everyone arrives.
A photograph from an evening bike ride.
A ride after dark.
Cooking at home.
Making dinner at home.

Beyond the three projects

Events, arguments, cameras, rides, and dinner.

The index is a wider picture of me: ASB event planning, public speaking, Model UN, environmental organizing, photography, cycling, cooking, and the smaller things around the work.

Personal indexBrowse the wider archive

A working archive

Not everything needs to become a project.

Some things deserve a full record. Others are better kept as a photograph, a question, a joke that survives the week, or a note about an idea worth trying later.

A short introduction