Go Down

Topic: Brass Horns, Pneumatic Solenoids, Air Compressor: Hardware Configuration Advice (Read 3518 times) previous topic - next topic

mnoble

Hello Interactive Art Arduino List,

My name is Margaret and I am a high school teacher and artist working in sound sculpture. I have technology literacy but I usually struggle. I am working towards making an outdoor motion sensor project controlled by an Arduino which activates pneumatic solenoids and an air compressor to play a set of vintage brass horns. I am stuck on what hardware elements to purchase to begin tests I was wondering if anyone had thoughts on the following:

- Universal fitting valves that snuggly attaches around vintage horns and connect to the airlines of a air compressor?

- What parts are needed to create a multi-pneumatic solenoid configuration where air can go to different horns at different times from the same compressor?

- Reliable all-weather motion sensor to activate Arduino sequence?

Thank you so much for your thoughts and advice!

Sincerely,

Margaret

CrossRoads

Just curious - what are you using to provide the equivalent of vibrating lips to the brass horns? They need more than just air blowing in don't they?

Take a look here for air valve solenoids, there could be less expensive options available as well.
https://www.hornblasters.com/products/category.php?c=air-valves-and-vale-kits
Will need a transistor per solenoid that Arduino can turn on/off as needed.

Outdoor motion sensor - you need to provide more info on how you anticipate that working, how sensitive, how reactive it should be, etc. Maybe a Passive Infra Red (PIR) could work, or be "tuned" to only sense a small area, maybe pressure sensors under a mat on the ground would be better, maybe InfraRed (IR) beam break sensors mounted horizontally would be better, etc.
Designing & building electrical circuits for over 25 years.  Screw Shield for Mega/Due/Uno,  Bobuino with ATMega1284P, & other '328P & '1284P creations & offerings at  my website.

mnoble

Hi Crossroads,

Thank you so much for your reply.

Regarding your question: "Just curious - what are you using to provide the equivalent of vibrating lips to the brass horns? They need more than just air blowing in don't they?"

I was doing some research on train horns for monster trucks and they seemed to just have tubes connected to air compressors. The type of horns I was thinking of using are old car horns and the one I have for testing doesn't seem to need the same vibrational pressure as a trumpet I have. However, maybe I missing some important considerations for obtaining the correct type of pressure.

Thank you for the suggestions with Hornblasters and considerations on the sensor!

cedarlakeinstruments

You need a pneumatic solenoid valve manifold to manage single air in to multiple, controlled air out.
I may have one  I can spare in my "junk drawer." It runs at 24V, but that's not hard to handle. If you're interested, send me a PM (or I guarantee I'll forget!) and it's yours for the cost of mailing in the US if you want it.

I've done a lot of cleanup over the last few months and they might have been tossed since I haven't needed them in years. But willing to help out a school if I can :-)

Air valves tend to be more expensive than liquid valves because they need to seal tighter. But cheap water valves might work if you don't mind a little air loss. If I don't have the parts any more, you can make your own from Home Depot water tube/fixtures and eBay solenoid valves.
Electronics and firmware/software design and assistance. No project too small

PaulMurrayCbr

- What parts are needed to create a multi-pneumatic solenoid configuration where air can go to different horns at different times from the same compressor?
Would garden irrigation equipment work? Stuff you can get from the hardware store to water your garden with a computer? I have seen solenoids for this purpose in the store. If it can hold and switch water, it might work for air - depends on how much pressure you need. 12v, but you can switch 12v with a relay board or some FETs.

This sort of thing. Google "home irrigation solenoid".
http://paulmurraycbr.github.io/ArduinoTheOOWay.html

Chagrin

This 12V, direct acting, normally closed valve is what you're looking for. Even this $10 part is overkill; you'll only need a couple PSI of pressure if you're trying to match the capabilities of a human.

I'd also recommend the quick connector fittings like are shown on the above page. This style of fitting can be found pretty inexpensively for elbows, Ys, flow control, etc., and don't forget to buy the tubing that goes with it.

cedarlakeinstruments

This 12V, direct acting, normally closed valve is what you're looking for. Even this $10 part is overkill; you'll only need a couple PSI of pressure if you're trying to match the capabilities of a human.

I'd also recommend the quick connector fittings like are shown on the above page. This style of fitting can be found pretty inexpensively for elbows, Ys, flow control, etc., and don't forget to buy the tubing that goes with it.
Good point: for car horns, you're probably OK with any valve. For something that's normally operated by human mouth pressure, it may be harder. Most solenoid valves are "pilot actuated" meaning they use the back pressure to help them open and the minimum usable pressure is often 20+ psi and ISTR that the average human blows at about 3-5psi.
Electronics and firmware/software design and assistance. No project too small

mnoble

Thank you much to all replied here. I am still digging around and will update as the project develops!

miguemesa

Hi Margaret! while researching a similar topic I found some info that might be interesting for you:

https://youtu.be/asp0TcxYWa8

https://archive.org/details/organbuildingfor00wick

First I found the video and then the book. My guess is that you already have the instruments but this info might help you in further projects.

Cheers!

Go Up