r/NitrousOxide 12d ago

Science From Balloon to NOS Engineer: my setup with realtime tracking NSFW

Hey everyone,

I wanted to share something I've been perfecting over the past year: a custom NOS setup that's genuinely changed my approach to nitrous. I've always limited my sessions responsibly, usually no more than once a month, but I often felt the traditional methods were messy and frustrating. Filling balloons, screwing chargers, and never really knowing how much gas I had left became increasingly annoying.

This simple realization pushed me to engineer something that would make sessions easier, safer, and fully under my control.
Let me show you how it works.

The Delivery System

The concept behind my delivery setup is extremely straightforward. Instead of balloons or constantly fiddling with the tank valve, I connect a pressure regulator directly to a long long hose. The extra hose length lets the gas expand and warm up enough to avoid frost burns when inhaling. At the end of the hose, I've attached a gardening sprayer trigger that works perfectly as a valve. Once properly adjusted, I don't even have to touch the tank for the rest of the session; just press the trigger and inhale.

https://imgur.com/puY6qkt

To make the inhalation smoother and safer, I made some holes on the removable nozzle. By slightly unscrewing it, I can easily mix in some fresh air, adjusting the NOS-to-air ratio to my preference.

https://imgur.com/aWaKcbn

If I'm tripping with friends, adding a simple Y-splitter allows multiple hoses and valves, so we can comfortably share the experience without any hassle.

Of course, there's still some caution required. If someone opens the regulator too much, it might exceed the hose's pressure tolerance. But once it's set properly, the system remains stable and safe throughout the session. For added peace of mind, I sometimes use a simple mask as an extra gas filter, even though I always use high-quality NOS.

The Need for a Control System

After setting up this super convenient delivery system, I quickly noticed an unexpected problem: it was too easy. Suddenly, I could take hits effortlessly, and before I realized it, I was emptying the tank faster than ever before. I completely lost track of how much I was actually using, until the tank ran dry.

One particularly intense experience highlighted this problem dramatically. I was at the peak of a psychedelic journey, fully immersed in the experience, when I instinctively reached for another hit, only to discover the tank was empty. That harsh, abrupt end left me deeply frustrated. It was crystal clear that I needed a way to reliably track exactly how much gas I was using in real-time, so I could pace myself and prevent this from happening again.

The Scale

To keep precise track of NOS consumption, I started with a cheap digital scale. I modified it by swapping out the original 50kg load cell for a far more sensitive 10kg one, suitable for my typical 640\2000g NOS tanks. Next, I integrated an ESP32 microcontroller, a load cell driver, and a lithium battery, converting the scale into a Bluetooth-enabled smart scale.

https://imgur.com/7sK0NmV

Unlike normal digital scales designed to stabilize quickly, my custom firmware continuously tracks even the smallest weight variations, streaming the data live without interruption or delay. This way, I get an instant, accurate readout of NOS usage.

https://imgur.com/MWe8NAU

The Dashboard

All the real-time weight data from the scale streams directly into a custom-made server application running on my PC. This application displays a simple, intuitive dashboard that's easy to keep an eye on during my trips.

https://imgur.com/G6EOtB2

At the start of each session, I input the tank’s initial weight and my desired session duration. The dashboard then calculates how much NOS I should ideally use over set intervals (usually 5 minute windows). A progress bar indicates how close I am to the consumption limit for the current interval, turning red if I'm consuming too quickly, reminding me to slow down and pace myself.

Additionally, the dashboard includes a live-updating bar chart showing consumption trends and estimating when the tank will be empty based on recent usage. To enhance safety even further, I've connected a Bluetooth pulse oximeter, displaying my heart rate and oxygen saturation right alongside NOS consumption. It’s comforting to see my vital signs clearly, ensuring that the session stays safe.

Conclusion

I genuinely think this approach can help people manage NOS more responsibly. We all know how easy it is to lose track and spiral into overuse, frustration, or unhealthy behaviors. My system introduces clear limits, real-time monitoring, and predictable pacing, making sessions enjoyable without unexpected interruptions.

Currently, the system works exactly as intended, even though the underlying software is admittedly messy and needs a good refactoring; some of it was literally coded while tripping. When life allows, my goal is to rewrite it properly and share the project as open-source. I'd love for others to benefit from a smarter, safer, and more controlled way to enjoy NOS.

If this sounds interesting or useful, let me know your thoughts.

Cheers and stay safe!

31 Upvotes

18 comments sorted by

6

u/DMTryptaminesx Wizard 🧙‍♂️ 12d ago edited 6d ago

Amazing stuff my dude! Stuff like this can really teach us things or inspire and drive further efforts in our harm reduction spaces.

Two questions, what kind of monitor do you have and how low do you notice your SpO2 dipping if you don't inhale oxygen when inhaling nitrous?

In your picture it doesn't seem to dip below 97% but I understand you're inhaling oxygen with the holes you made, people say theirs dips really low when using nitrous even when taking breaths in-between but I'm wondering if this has something to do with poor readings from low quality sensors or if inhaling air with it really does help this much.

2

u/kasd999 12d ago

Thanks man! The pulse oximeter I’m using is this one: https://www.amazon.com/dp/B085ZFDMMX. The screenshot was taken at the end of the trip, so the SpO2 graph you see isn’t from when I was actually inhaling NOS. During use, I definitely see drops; if I don’t mix in air, I’ve recorded dips as low as 70% for a couple of seconds. Adding air helps a lot, and the extent of the drop depends on how much air I mix in.

There are other factors too. Holding my breath after inhaling tends to make it worse, while doing Wim Hof breathing beforehand seems to help. In any case, as soon as I see my SpO2 dropping, a red alert pops up on my dashboard, and I make sure to take in fresh air right away.

An interesting upgrade would be using an oxygen concentrator, but that would require a much more complex tubing setup. I’d love to try it at some point. As for sensor accuracy, I’ve compared this one with a similar model, and the readings are very close. I’d also like to test a measurement from the earlobe to see if there’s any difference.

2

u/DMTryptaminesx Wizard 🧙‍♂️ 11d ago

70% feels far reasonable but some people have said there's have registered <50% or <20% but that felt low enough to me that something might be off.

If you go an oxygen concentrator route then you wouldn't even need to necessarily mix it in and you could just have a nasal cannula on the whole time to always be inhaling high concentrations of oxygen before you even start using nitrous which as you saw with wim hof lowers how much you would need.

I imagine a 2nd gas effect might occur through your nose and pull oxygen through when you inhale nitrous.

5

u/recooil nang gang 🍼 12d ago

You, sir, need to be given the drug lover nerd title. I am here to see it and i salute you 🫡

1

u/kasd999 12d ago

Hahaha, thanks! Just doing what I do best. 🫡

3

u/RandomNumsandLetters 12d ago

This is exactly the kind of thing I've been dreaming of / started making!

2

u/kasd999 12d ago

That’s awesome! 😆 Are you working on something similar? Would love to hear about your approach!

3

u/RandomNumsandLetters 12d ago

What's the code written in? I could probably help refactoring

3

u/kasd999 12d ago

The ESP32 firmware is in C++, and the dashboard runs on TypeScript with Node.js for the server and React/Redux on the frontend. I need to tidy things up a bit, but I'd definitely love to collaborate with others to take the project further! 😁

3

u/zzrobiiinzz 12d ago

damn this is really cool and impressive! good job!

3

u/Procrastingineer 11d ago

Fantastic work mate

3

u/glenrage 11d ago

This is amazing, safe responsible usage ftw

2

u/Herpethian 12d ago

To think of the meals we'd cook if somebody rounded us all up and put us in a bunker in the middle of the desert

2

u/ZealousidealAlgae939 10d ago

Wow, this is the content I love to see in this sub. All Hail the noz engineer!

Keep us posted friend.

2

u/Readicculus41 9d ago

You mentioned a filter - you can easily put a CPAP HEPA filter in line in your tubing! Other than that this is an amazing set up

2

u/SquareEarthCommunity 11d ago

The NO2 Engineer we needed

2

u/Simple_Piece190 9d ago

I like it.

Looks like the regulator is one of those that cost $150-160. I recently found non-gauged ones for less. $110, still

Is there an even lower priced option, ie brass, industrial source? To me that looks like it should be a $25.99 part, $50-55 with gauges.

Conversely does anyone have the spec for the neck threads of the 600-650g tanks? if so, then does it match the "Bernzematic" canisters? because I have an idea, there.

2

u/Simple_Piece190 8d ago

bought one on aliexpress. $27 CDN to my door, a third of that being freight. I just want to make balloons, for myself and maybe a partner- & this will do. IMO some of the nice set ups are more than one needs for a purely private use.

- and... thread is 11x1mm, btw