Introduction

To protect the electronics from water exposure while maintaining containment, a robust solution was required. While there are methods to waterproof individual electronics, the lack of spare components made direct exposure too risky. To address this, the DA team at HAFB Launchpad was tasked with designing and printing a custom container tailored to the project’s requirements.

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Features of the Electronics Box

The custom-designed box includes several features to ensure functionality and protection:

• Mounting Loops:
  Four loops on the sides of the box near the front are designed to rest on PVC pipes and be secured with zip ties, ensuring stable placement.

• Cable Gland Ports:
  Five holes on the sides allow cable glands to provide waterproof passthroughs for cables entering the enclosure.

• Lid Securing Loops:
  Four additional loops near the lid are designed for zip ties to secure the lid and prevent water ingress.

• Internal Mesh Lift:
  A mesh platform inside the box elevates the electronics above the floor. This design:

  1. Prevents electronics from submerging if water enters the box.
  2. Simplifies the removal and repositioning of components while maintaining their relative positions.

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Waterproofing the Box

The prototype box was printed using resin, which is not the most chemically resistant material for use in a chlorinated pool. To address this, the box was coated with epoxy resin to reduce corrosion from water exposure. Cable glands were used to create a waterproof method for routing cables into the box.

A second version of the box was printed using a more chemically resistant material, resulting in a more durable enclosure securely mounted onto the boat.

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Waterproofing the Electronics

Research revealed that CorrosionX, a lubricant designed to prevent corrosion, also provides waterproofing for electronics. Demonstrations showed that electronics treated with CorrosionX could function even when submerged in water. To enhance protection, this coating was applied to all electronic components housed within the box, offering an additional layer of safety.

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Electronics Box Dimensions

Dimension	Measurement
Inside (L x W)	260 x 260 mm
Outside (L x W)	270 x 270 mm
Height (without lid)	65 mm
Height (with lid)	70 mm

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CAD Design

Below is the CAD model of the custom-designed electronics box:

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This wiki entry provides a detailed explanation of the design, waterproofing methods, and materials used to protect the electronics.