Robot build story

From Scratch to Our Current RoboSub

We started with a simple test platform and built toward a more complete autonomous underwater vehicle through CAD, fabrication, electronics integration, software development, and pool testing.

Current Southern Miss Robotics - AUV robot at the pool
Our current robot reflects the lessons from each prototype, bench test, and pool session.

Build journey

How we got here

Our robot did not appear all at once. We worked through small test rigs, early frame concepts, electronics bring-up, CAD revisions, fabrication, and pool validation.

Phase 0 robot in the water

1. First water test

We began by proving that a simple platform could float, move, and survive a controlled pool test.

Early PVC prototype with camera setup

2. PVC prototype

We built an early body to test camera position, basic structure, wiring paths, and how components fit together.

Electronics and thruster wiring on a bench

3. Electronics bring-up

We connected ESCs, thrusters, power, and control hardware on the bench before trusting the system in water.

Cut frame parts during fabrication

4. Frame fabrication

We cut and prepared frame pieces so the vehicle could move beyond temporary prototype geometry.

Current parts being assembled in the lab

5. Lab assembly

We assembled the current parts, checked clearances, and made the robot easier to service between tests.

Completed CAD model of current robot

6. CAD refinement

We used CAD to capture the current design and guide the next frame, mount, and packaging decisions.

Current robot poolside front view

7. Current build

We brought the current robot poolside to evaluate the complete system as a vehicle, not just separate parts.

Phase 0

We started by learning what the water would tell us

Our first platform was intentionally simple. It helped us see how flotation, drag, camera placement, cables, and thrusters behaved in the pool before we committed to a more refined frame.

Underwater view of Phase 0 pool testing
Electronics wiring and ESC integration layout

Electronics and controls

We built the nervous system on the bench first

Before pool testing, we brought up ESCs, thrusters, wiring, compute hardware, and power distribution in the lab. That bench work lets us isolate electrical and control issues before they become water-test problems.

Wet test

Pool testing in motion

This wet-test video shows the robot in the water so we can review movement, response, and system behavior between build cycles.

CAD model

We use CAD to make the next build cleaner

The CAD model documents what we have learned from fabrication and pool testing. It helps us plan thruster placement, hull position, electronics access, and future sensor mounts before we cut new parts.

Full current RoboSub CAD model