Hi everyone,
This is my first post on the forum. Let me introduce myself: I am an automation engineer and secondary school Technology teacher in Spain. As part of my syllabus, I teach pneumatics, and since there are no simple, free options on the market, I have developed an online application (no installation, no registration, and free open-source) to simulate pneumatic circuits for schools.
I would like to share it and receive advice on how to improve it.
What is the best way to do this here without violating the spam rules?

Thank you very much.

 

Welcome to the forum! I’m also new here and looking forward to connecting and exploring new opportunities, your pneumatic simulator sounds really interesting!

 

This is the site of the simulator, with a circuit preloaded:
https://www.picuino.com/neumatic/index.html?loadFile=d-automatic.txt
You must click on the menu "Simulate... Init"
I am currently writing the tutorial for class (in Spanish, but I hope to translate it to English as soon as I finish).

 

The simulation is very realistic. It is based on the displacement of air masses (using equations solved by Runge-Kutta 4 every millisecond), from which pressure is derived. This allows the system to be conservative and ensures that no air is lost.

If you go to the Edit menu... Flip and then click on the non-return valves, you can see how the air intake is restricted instead of the air outlet, and the cylinder moves in ‘jumps’.

 

This is the site of the simulator, with a circuit preloaded:
https://www.picuino.com/neumatic/index.html?loadFile=d-automatic.txt
You must click on the menu "Simulate... Init"
I am currently writing the tutorial for class (in Spanish, but I hope to translate it to English as soon as I finish).

As a fellow controls engineer and instrument technician I absolutely love this simulator.

 

I too am new to this site and have found it very informative.
I'm a retired HVAC and controls technician and I like your simulator. I noticed it was not industry specific so I found an old PDF file of how pneumatics are used in HVAC. The file was too large to upload so I included the link where I found it.
Thanks for sharing your simulator.
Regards

https://gormanindustries.com/index_htm_files/Pneumatic Fundamentals.pdf

 

I too am new to this site and have found it very informative.
I'm a retired HVAC and controls technician and I like your simulator. I noticed it was not industry specific so I found an old PDF file of how pneumatics are used in HVAC. The file was too large to upload so I included the link where I found it.
Thanks for sharing your simulator.
Regards

https://gormanindustries.com/index_htm_files/Pneumatic Fundamentals.pdf

Great find and great content. A lot of the principles and operational designs are relevant to industrial controls. Much of it reminds me of my apprentice times working on drying systems using waste heat and gas fired heaters.

 

I too am new to this site and have found it very informative.
I'm a retired HVAC and controls technician and I like your simulator. I noticed it was not industry specific so I found an old PDF file of how pneumatics are used in HVAC. The file was too large to upload so I included the link where I found it.
Thanks for sharing your simulator.
Regards

https://gormanindustries.com/index_htm_files/Pneumatic Fundamentals.pdf
For learning and testing logic, online pneumatic simulators are great for visualizing valve behavior, timing, and fault conditions without physical hardware. They’re especially useful before committing to real components like the SPEAR320S-2, where understanding flow paths and response matters. While simulators won’t replace hands-on tuning, they significantly reduce trial-and-error during early design and training phases.

Thanks for sharing that PDF and for the kind words about the simulator. That’s a great HVAC-focused reference and a nice example of how the same pneumatic fundamentals apply across different industries. While the simulator isn’t industry-specific by design, the core concepts it demonstrates are directly transferable to HVAC control systems, so resources like the one you linked are a perfect complement for anyone wanting to see how those principles show up in real-world applications. Much appreciated!