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MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
allows you to interact with all your printers via the Cloud, and many other exciting new features.

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Hey! This thing is still a Work in Progress. Files, instructions, and other stuff might change!
gianteye

The Anywhere Organ v3.1

by gianteye Nov 2, 2011
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how much does the lightest pipes weight? i have a small Muffle furnace to 1000 degree and 3d printer. do you use wind supplyer, the MTP is too much expensive here, it must be shipping, i am making up with another easy-introduced 3d printer organ, shown below is a logo express patient and enjoy

i was hoping to see a video of these in action.

You need to post the electronics design, then maybe we could help you with the LEDs!

When those magnetic valves turn off, there's a large amount of energy stored in their electromagnets - it basically forms an LC resonator, with a very large L and very small C values - creating a very large spike of reverse-voltage (for 12V motors and solenoids, this can be in the 50-300V range!),
and in addition it "rings" down for a few milliseconds, with secondary and tertiary voltage spikes in the plus and minus directions...

Chances are, you need a back-EM clamp diode across the LED (anode-to-cathode, so to speak) I think you would include the LED resistor in the circuitry you're br
idging with the diode, but I'm not so sure it really matters... you can also hook up a capacitor across the magnetic valve leads to soften the spike (this would be in addition to, not an alternative of, clamping diodes)

Howdy. Thanks for the advice. This is roughly what I'd pictured with running LED's, but this configuration universally blows them out. The motor symbols here represent the magnetic valves, and the MIDI controller is pretty much just a bank of relays providing a path to ground.