No more cutting filters just to run a sensor cable into your monotub.
I've been a little quieter than usual lately, but that doesn't mean I haven't been working on anything. I've been spending more time designing, testing, and refining my projects rather than rushing to get something released.
One of those projects is finally getting close to release: my new Sensor Cable Gland.
The Problem I Wanted to Solve
As I've experimented with different environmental sensors in my mushroom-growing setups, I've run into a frustrating problem. How do you get sensor cables inside a monotub without cutting holes in your filters or permanently modifying the tub?
Sure, you can cut a filter or drill another hole, but I wanted something a little more flexible.
So I designed my own solution.
A Simple Design With More Flexibility
The Sensor Cable Gland replaces a standard plug and allows you to run up to two sensor cables into your monotub while keeping the existing filter opening available.
A few features include:
Supports up to two sensor cables: Use different sensors together, whether they're from VIVOSUN, AC Infinity, or other manufacturers.
Rotating selector: Choose between zero, one, or two cable openings.
No cutting filters: Run your cables without having to modify your existing filter patches.
Optional solid cap: Close off the main filter opening entirely when needed.
Friction-fit installation: Designed to fit securely without additional mounting hardware.
The rotating mechanism also allows you to close off the cable openings when they're not being used. To install cables, you simply remove the top section, position your cables, and reassemble it.
Designed for North Spore, but Not Limited to It
The initial design was built around the North Spore Boomr Bin, including both V1 and V2 models.
However, I don't want this to be something only North Spore owners can use.
The plug measures approximately 2.1 inches across its friction-fit section and is designed for an opening around 2 inches. That means it may also work with custom DIY monotubs that use similarly sized openings.
I haven't tested every possible tub configuration, so compatibility outside the Boomr Bin isn't guaranteed yet.
Eventually, I'd like to expand compatibility to additional monotub manufacturers and designs.
I'm also planning to build a custom DIY monotub to demonstrate how some of my existing designs, including my automated quick disconnects, can be used outside the North Spore ecosystem.
Why Two Cables?
I wanted this design to support more than just one sensor.
As more environmental monitoring options become available, I think growers should have the flexibility to choose which sensors they want to use.
Maybe you're running a temperature and humidity sensor alongside a CO2 monitor. Maybe you're experimenting with a completely different setup.
The goal is to give people options without requiring additional modifications to their tubs.
Of course, the cable gland doesn't automatically improve growing conditions. It's simply a tool that makes installing and experimenting with wired sensors easier.
Release Date: November 2, 2026
The Sensor Cable Gland is scheduled to release on November 2, 2026.
Just like many of my previous projects, I want to make this accessible regardless of whether you own a 3D printer.
Two ways to get it:
Free 3D printing files: Download the design and print one yourself.
Physical product: Purchase a printed version directly through my website.
Supporters on Patreon already have early access to the files.
What's Next?
This is just one of several projects I've been working on. I'm continuing to refine my modular sensor mounting system, quick disconnect accessories, and other designs intended to make mushroom-growing equipment more flexible and easier to use.
I also want to see what the community does with these designs. Whether you're using a North Spore Boomr Bin or building something completely custom, I'd love to see how you incorporate them into your setup.
Thanks to everyone who's been following along, offering feedback, and supporting these projects.
I'm still learning as I go, and that's kind of the whole point.
Confidently unqualified.
This Seemed Easier
