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A comment on Show HN: Sorting Two Metric Tons of Lego. Parent comment

Re:Show HN: Sorting Two Metric Tons of Lego by sprocket on Saturday April 29, 2017 @02:23PM (#14227906)
What is the name of the hardware parts that are connected to the relay? I think you've called them "puffers", but searching on that didn't bring up any results. Are you able to provide a link to where I might purchase a couple?
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Re:Show HN: Sorting Two Metric Tons of Lego by jacquesm on Saturday April 29, 2017 @02:41PM (#14228023)
They're simply 12V solenoids with an air valve attached, to that I've run a small 1/8th" tube to a piece of thin copper tubing that's open on one end. Nothing fancy or branded, the air valves are all attached to a manifold that divides the pressure from the compressor across all the valves.

12V on the valve -> air streams out of the corresponding tube.

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Re:Show HN: Sorting Two Metric Tons of Lego by sprocket on Saturday April 29, 2017 @08:11PM (#14229510)
Ah, yes; it was the manifold that I was looking at and wondering what it was. Thanks for the explanation!
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