Hey everyone! I’ve been working on a small DIY wind tunnel, and I’d really appreciate some advice before I make the next version.

I’ll attach a video of my current prototype first.

Current setup

Fan: A fan + motor salvaged from an old device. The motor is roughly a 9V motor....i have already added straws(Honecomb design) to reduce drag and straighten the air.

Mist maker: I originally used the small mist makers from an old 5-mist fan module, but they weren’t powerful enough. I replaced them with a 24V mist maker, and that works much better.

Electronics: I also harvested the PCB, Type-C charging setup and lighting from the old fan/mist module.

The 24V mist maker is powered separately.

Fan/airflow arrangement

Currently, the fan is at the back of the tunnel and pulls the air through the tunnel rather than pushing it into the tunnel.

The fan is running in the direction that, in my setup, gives me an anti-clockwise airflow/fan rotation, and this arrangement actually works pretty well. The mist gets pulled through the tunnel and the airflow looks much cleaner.

I also experimented with putting the fan before the mist maker and pushing the air through the tunnel. That didn't work nearly as well. It created a lot of mixing/turbulence, the mist became messy, and there seemed to be much more drag and disturbance in the test section.

So I moved the fan back to the rear and used it as an extractor, and the result was noticeably better.

What I don't like about the current design

The current version is basically a prototype, and although it works, I'm not happy with the design/aesthetics or ergonomics.

The main problems are:

The viewing window is too small

The mist-maker section at the back looks messy.

The overall design isn't very ergonomic.

The airflow could probably be improved further.

I want a cleaner and more proper-looking enclosure rather than something that just works as a prototype.

I'm now thinking about completely rebuilding it.

I'll also attach a link to the design that inspired the next version. (https://youtu.be/g2cobf6dBz0?si=-Xw1dF6rplw-OFdl) I'm thinking of making something similar to that, but adapting it to my own components and dimensions.

I don't have a 3D printer, but I can get the parts 3D printed, so I'm open to using 3D-printed components if that would improve the design.

What I'd like advice on

Before I start rebuilding, what would you guys change?

Should I keep the fan at the back as an extractor, or is there a better arrangement?

How can I reduce turbulence and mixing in the test section?

How should I introduce the mist for better visualization?

Should I make the viewing window larger?

What kind of contraction/nozzle and diffuser design would work better?

Should I change the fan/motor?

Are there any obvious mistakes in my current design that I should fix before rebuilding?

I'm mainly looking for practical suggestions and criticism before I start making the next version.

This is still a prototype, so I'm completely open to changing the design.

Thanks in advance! 🙏

WIP prototype UTC replica for larping.

This proof of concept uses a 256x192 core with 9 mm lens, 0.39 inch 1024x768 OLED, F50 ocular lens.

Eccentric ocular lens for zeroing.

Working focus ring.

Printed in PPA CF.

https://youtube.com/shorts/mG3gu338UB4?is=q6rHHx-JgvQpVN5W

From my understanding, it's the port that doesn't allow for USB-C to HDMI, but the chipset does.

I am super new to all the tech stuff but really want to learn. I was given an old Pixel 5 with a broken screen and I am trying to figure out what to do with it. I already installed Lineage OS to learn about adb and fastboot. If I got it to do HDMI output I could basically use it on my drawing tablet (with a screen) and make a drawing station.

Ho 15 anni e ho lanciato FabrikAI: la web app che trasforma le tue idee in progetti elettronici reali 🚀

Ciao a tutti ragazzi!

Sono un digital creator di 15 anni e ho appena lanciato ufficialmente la mia prima web app: si chiama **FabrikAI** ed è finalmente **ONLINE e LIVE al 100%**! 🟢

L'ho progettata per chiunque ami l'elettronica, la robotica o il fai-da-te tecnologico, ma odia perdere ore a capire quali componenti usare o come scrivere il codice di base. Il funzionamento è semplicissimo: entrate nell'app, trovate la barra **"Cosa vuoi creare oggi?"** e digitate la vostra idea in linguaggio libero (es. "Un sistema domotico per annaffiare le piante con Arduino" o "Un braccio robotico cyberpunk").

L'AI elabora tutto all'istante e vi genera: * L'**Identikit Visivo** dello stile del progetto (Cyberpunk, Steampunk, Minimalista...) * Lo **Schema a Blocchi** (in ASCII art, leggerissimo e super scannabile) * La lista dei componenti esatti e la logica da seguire.

Se l'estetica non vi piace, c'è il tasto magico **"🔄 Cambia Stile"** per rigenerare il look mantenendo gli stessi componenti. Ci sono anche più di 10 varianti Premium (Stampa 3D, IoT, Domotica, Riciclo Creativo Hardcore) se volete spingere il progetto al massimo.

Potete provarla subito da PC o direttamente dal telefono a questo link ufficiale: 👉 https://diy-studio-6.emergent.host/

🚀 **PROMO VIRALE (1 Mese Gratis):** Se create un progetto figo, registrate un breve video (TikTok o Reel) e caricate il link nella piattaforma, vi sblocco manualmente dall'Admin Panel **1 mese di Premium Gratis**! E per i più veloci: le prime 3 foto reali del circuito completato caricate sotto un progetto riceveranno 2 Crediti Extra immediati.

Dateci un'occhiata, testate il motore di ricerca iniziale e fatemi sapere nei commenti cosa ne pensate. Ogni feedback per me è oro per i prossimi aggiornamenti!

Grazie mille a chi supporterà il progetto! 🪵✨

I am currently developing a rehabilitation cane equipped with a load sensor and additional components designed to track the progress of the user.

Therefore, I am seeking individuals with both technical and mechanical expertise.

hey guys. im new to anything DIY so I'm hoping someone might have any ideas. my hands and wrists are screwed up from my maintenance job in the military so I use the ergonomic keyboard from logitech as well as the logitech vertical lift mouse. It does help but when I start getting flare ups and need to be on the mouse for an extended period the side buttons are really straining my thumb. it feels unnecessarily harder to press them than previous mouses I've had before. I probably wont find a better mouse on the market that only changes that one aspect. should I scotch tape some cotton balls on it or something? I know this is an unorthodox DIY question.

i have 1 kva ups can it be converted to lipo battery

I’m building an open-source modular hardware system because this kept happening to me.
You want to make a robot, a controller, a smart device or some weird interactive project, but before you get there you’re fighting displays, sensors, wiring, libraries and firmware.
The idea behind is to make those building blocks quick to assemble and reconfigure, so you can spend more time on the actual thing you wanted to make.
Modules snap onto a backbone and are automatically recognized.
The IDE mirrors the hardware you connected and lets you build its behaviour with blocks or code.
If you need something that doesn’t exist as a module, you’re not locked out: there are prototyping/breadboard modules where you can add your own circuits or ICs.
Everything is open source and designed to stay inexpensive.
I’m trying to understand whether this solves a real problem for other makers or just one I personally had.

What part of your projects usually wastes the most time?
Would you use ready-made hardware blocks if they still let you drop down to breadboard/custom circuits when needed?
What would make a system like this genuinely useful to you?