Tower Hydroponic Light Module Part1

This module is not just a “light on top” — it’s a fully functional section that replaces the standard top cover of a hydroponic tower. It’s designed as part of a modular system where mechanics, lighting, and control are logically separated. This part focuses on the structure and lighting, while the controller will be covered in the next part.

Concept

The main idea was to create a convenient, serviceable, and flexible lighting solution that doesn’t get in the way. The module is fully removable — it comes off together with all wiring, without any hassle. This is important, because accessing the reservoir, refilling nutrients, and general maintenance shouldn’t turn into a struggle.

The module is fully sealed, which is critical in hydroponics. Humidity, condensation, and splashes must not get inside.

Lighting

The system uses dual-channel lighting, which will later be controlled by a custom controller. This allows flexible spectrum tuning and different operating modes (vegetative, flowering, or mixed scenarios).

After testing multiple designs, I settled on a “spider-like” layout using flexible light arms. This turned out to be the most practical solution:

• easily adjustable as plants grow
• does not block access to the tower
• provides even light distribution

This approach is far more convenient than rigid frames or ring-style lights.

Controller (Important Note)

The stock controller that came with the Chinese light is the weakest part:

• very basic
• incorrect timing logic (including maximum light duration limits)

It was never intended to be used.

The plan is to use a custom controller with:

• Wi-Fi and web interface
• dual-channel light control
• irrigation control
• nutrient solution temperature monitoring
• optional external fan control (ventilation / cooling)

This will be covered in a separate part, with more advanced logic and features.

Construction and Materials

The mounts for the light profiles are printed in polycarbonate. In reality, there’s no significant heat, so you can safely use:

• PETG
• ABS/ASA

Polycarbonate is more of an overkill choice than a requirement.

As for the diffuser, the stock version is essentially just clear polycarbonate with almost no diffusion. It was replaced with:

• thin transparent polycarbonate
• improved light diffusion properties

As a result, the light is softer and more evenly distributed, without harsh direct beams.

Assembly

Assembly is straightforward. This part is purely mechanical:

• main body
• mounts
• light elements

There’s no complex electronics at this stage — that will come later.

Printing and Files

Files will be available in:

• 3MF — with pre-configured settings
• STL — for those who prefer their own tuning

Important:3MF does not guarantee identical results.

The reason is platform limitations. When uploading to sites like MakeWorld:

• some settings may be stripped
• non-standard parameters may not be preserved

As a result:

• the same file can print differently
• people report failed prints

This is not always a model issue.

If you’re just printing — keep this in mind.

If you’re publishing — you already know how this works.

Supports

The model includes supports using an interface (support material layer).

If that doesn’t work for you:

• adjust your own support settings
• tune it for your printer

Relying entirely on the author’s settings is not always a good idea. Even when everything is set correctly, platform limitations can still alter the result.

Summary

At this stage, this is:

• a well-thought-out mechanical platform
• a flexible and adjustable lighting solution
• a base for a more advanced control system

The next part will focus on the controller and electronics, where this turns from a simple light into a fully managed system.

See the video for details:

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Parts links below:

• 1/2/3/4 Red Blue LED Grow Light Strip
• Flexible hose (Gooseneck) M6
• Type-C 5A Charging Socket
• Head Flat Screw M2.5
• Insert Knurled Nut M2.5

Links to used tools:

• NOGA deburring tool and Blades
• Polishing Cordless Drill
• Mini Electric Drill
• ARROWMAX A Set-10 Bits of Drill
• SEQURE S60P Soldering Iron Set
• MINI MScraper
• Heat Insert Nut Iron Tip
• Heat Insert Nut Iron Tip T12
• Heat Insert Nut Iron Tip Trimming kit C210
• Heat Insert Nut Iron Tip Trimming kit C245

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it means great recognition for me and helps a lot to keep going!

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