Question #259

Can a greenhouse decide when to vent?

The Workshop

Not code. Real things.

Some problems are solved with software. Plenty aren't. This is the bench side of the lab: things printed, cut, wired, planted, driven and occasionally broken.

What's on the bench

Sketches

Pen, paper, and the first version of every idea here.

CAD

Parametric models before anything is cut or printed.

3D prints

PLA and PETG test parts. Mostly wrong the first three times.

Hardware

Sensor rigs, microcontrollers, breadboards, salvage.

Vehicle testing

Real vans, real routes, real duty cycles.

Material samples

Films, boards, composites, coatings. Labelled and kept.

Research notes

Papers read, numbers checked, assumptions corrected.

Photos & video

Captured at the bench, not staged afterwards.

OngoingFabrication

3D printed prototypes

Housings, brackets and jigs printed overnight so an idea can be held the next morning. Most versions end up in the bin. That's the point.

OngoingIndustrial design

Cardboard mock-ups

Before anything is machined, it exists in cardboard and tape. Cheap enough to be wrong five times in a day.

OngoingHardware

Electronics bench

Breadboards, microcontrollers, batteries that last less time than the datasheet claims, and a soldering iron that has seen things.

In progressInstrumentation

Sensor rigs

Weight, temperature, moisture, motion and light, logged in real conditions rather than in a spreadsheet assumption.

In progressMobility

Vehicle testing

Real routes, real loads, real weather. A vehicle that behaves perfectly on a desk teaches nothing.

OngoingHorticulture

Garden experiments

Grow trials run side by side: same seed, different conditions, measured properly. Tomatoes are unforgiving reviewers.

OngoingMaterials

Material samples

A drawer of laminates, films, composites and coatings. Half the recycling problem is that nobody can tell them apart.

FailedEvidence

Failed prototypes

Kept on the shelf, labelled with what went wrong. The failures are the reason the next version takes days instead of months.

OngoingFabrication

3D printing

FDM for brackets, jigs and housings. Most parts are printed to be measured, not admired, and the third revision is usually the one that fits.

In progressAcoustics

Music experiments

Contact microphones, pickups and cheap analysis on real instruments. Sensing a note without changing how the instrument feels is the whole difficulty.

In progressWater

Water experiments

Filtration cartridges, flow meters, turbidity and a bucket rig that measures what a shower actually uses. Litres and watts, both logged.

OngoingMaterials

Material testing

The same abuse applied to every candidate: heat, damp, UV, folding and a week outdoors. Comparable data beats impressive data.

OngoingDesign

Sketches

Pencil first. If an idea can't be drawn in one page, it isn't understood well enough to be built.

OngoingThinking

Whiteboards

Question at the top, blockers underneath, breakthroughs needed on the right. Photographed before it gets wiped.

Prototype failures

The shelf of things that didn't work.

Bin-mounted camera rig, v1

Lens fogged within two days outdoors. Condensation beat the classifier before the classifier did.

Learned · Environmental sealing is the experiment, not the model.

NFC tags on flat-pack panels

Read reliably on chipboard, unreliably through the metal fixings pack.

Learned · Tag placement matters more than tag spec.

Range prediction from telematics only

Wrong by up to 18% on cold mornings with heavy stop-start work.

Learned · Payload and ambient temperature belong in the model, not as a footnote.

If you make physical things and have a problem worth solving, we'd like to see it.

Bring us a problem