waterfall printer

chadchawaii said:

So this is my idea for a DIY solenoid/valve. I'll use the polarity to slide a metal bar back and forth. I'd drill a hole in the slide to make an opening when given a polarity, and a closed valve with the opposite polarity. I believe this can be done with an arduino. My first tests will begin Monday.

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chadchawaii said:

So this is my idea for a DIY solenoid/valve. I'll use the polarity to slide a metal bar back and forth. I'd drill a hole in the slide to make an opening when given a polarity, and a closed valve with the opposite polarity. I believe this can be done with an arduino. My first tests will begin Monday.

Click to expand...

Khalid1349 said:

"To invent, you need a good imagination and a pile of junk."
unfortunately, that pile of junk is not available her

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julfi said:

Hi!

i have done this project for my final thesis. here is a video
https://www.youtube.com/watch?v=rEOaEgPAHhA

I built the valves on my own, cause it was the cheapest way. I collected a lot valves from washing machines, at every scrapyard around knows me now
As i found the valves werent acurate i put them appart and i keept the electromagnets.

If you look how a valve is working you see that beside electromagnet you need the piston and some gasket. I have replaced the piston with a metal stick of 10cm. On one side of the stick is elmag, the other side is laying(filling) the hole(nozzle). Vertically.

Between elmag and nozzle there is water, you should build a tank that support elmagnets on top. When elmags are not energized, the stick(with some gasket) is laying(gravity) on the holes and water is traped. Once energized, the elmag lift the stick and the water is free to pour out.

Is working as fast as the elmags can energize so like using real valves. All you have to do is put all this around a nice tank

Click to expand...

julfi said:

Hi!

i have done this project for my final thesis. here is a video
https://www.youtube.com/watch?v=rEOaEgPAHhA

I built the valves on my own, cause it was the cheapest way. I collected a lot valves from washing machines, at every scrapyard around knows me now
As i found the valves werent acurate i put them appart and i keept the electromagnets.

If you look how a valve is working you see that beside electromagnet you need the piston and some gasket. I have replaced the piston with a metal stick of 10cm. On one side of the stick is elmag, the other side is laying(filling) the hole(nozzle). Vertically.

Between elmag and nozzle there is water, you should build a tank that support elmagnets on top. When elmags are not energized, the stick(with some gasket) is laying(gravity) on the holes and water is traped. Once energized, the elmag lift the stick and the water is free to pour out.

Is working as fast as the elmags can energize so like using real valves. All you have to do is put all this around a nice tank

Click to expand...

julfi said:

sure, this is from sketchup. Is really simple and you should update it if you want to sell as a product. Market inspector wont be really happy with such clamzy implementation, but you have an idea now
View attachment 64215

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Mosaic said:

How about pistons made with ball bearings ( to seal a round hole well) soldered to suitably sized bolts?

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chadchawaii said:

what if you want to keep the valves open for an extended period of time?

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