A researched design plan for a monitored jumping spider habitat with controlled lighting, passive ventilation, humidity sensing, safe access, and electronics designed around the animal's needs.
This project began from a personal interest in keeping a jumping spider, but the design goal became broader than “make an enclosure.” It is a plan for a small living habitat where the animal, the plants, the air, the water, and the electronics all have to coexist.
The result so far is a researched design plan, not a built system. The main blocker is cost and the amount of precision hardware needed for a first build.
The design asks how monitoring and controls can support a living environment without turning the habitat into a gadget for its own sake. The enclosure should help plants grow, keep humidity in a useful range, provide safe ventilation, and match the light cycles a jumping spider would expect.
Engineering judgment here means designing around the living thing first.
The current plan includes:
The top is intentionally not the primary access point because jumping spiders often build near the upper part of an enclosure.
| Decision | Selected direction | Why it fits the habitat | Tradeoff / next step |
|---|---|---|---|
| Access | Front door | Reduces disturbance to upper web hammocks during feeding and maintenance | Door sealing and escape control matter more |
| Ventilation | Passive lower intake plus top exhaust path | Keeps airflow simple before adding active control | Fan remains a fallback, not the first control loop |
| Mesh | 80 x 80 stainless steel | Better containment for small feeders and springtails while staying durable | Needs enough total vent area to avoid stale air |
| Drainage | LECA/pebble layer, mesh barrier, removable reservoir | Creates damp zones without turning the habitat into a swamp | Must be inspectable and easy to clean |
| Electronics | Dry isolated top module | Keeps wiring, controller, and lighting away from the living chamber | Adds mechanical complexity to the top assembly |
Researched design plan and CAD model. Not fabricated or tested. The design is detailed enough to show the intended living system, but the build cost made it a project to hold rather than force.
Build notes
01
The enclosure is a design plan, not a built habitat. The useful constraint is that the animal sets the architecture. Jumping spiders often build near the top of an enclosure, so the top should not be the primary access path.
That decision changes the whole shape of the design: front access for feeding and maintenance, electronics in a dry top module, and a secondary cap so the electronics can be reached without opening the main living chamber.
02
The habitat needs light, humidity, airflow, drainage, and safe access before it needs a clever control loop. Passive ventilation comes first because it is simpler, quieter, and less risky. A fan only makes sense as a fallback if passive airflow cannot keep the environment stable.
The same logic applies to sensing. Temperature and humidity logging are useful, but only after the mechanical habitat is safe, cleanable, and hard to escape from. The electronics should support the habitat, not become the reason it exists.
