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What is another name for something neuroscientists would colloquially call a spike?
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Attaches to the top of a [[Used With::Nalgene 1L Bottle]] and terminates in a [[Has Connector Gender::Female]] [[Has Connector Type::Luer Lock]]. Intended to be used with [[Used With::1L Bottle Wall Mount]] to hold it upside down, it keeps a constant water pressure as the bottle drains. The principle is that * as the water leaves the center tube, it fills up the reservoir of the cap until the water level seals the tube. * because air can't get in through the tube, the bottle comes to an equilibrium between the vaccum pressure in the sealed bottle and gravity. It releases no more water, and the water pressure that would come from the water in the tube and bottle is neutralized. * as the outer reservoir is drained, eventually it falls below the level of the tube, allowing air in, which returns us to the beginning of the cycle. Here's a video of it in action: https://vimeo.com/manage/videos/582751267 We use it to provide water to 10 behavior boxes with 30 total water ports, taking advantage of the [[Uses Autopilot Class::hardware.gpio.Solenoid]] class's calibration feature to be able to deliver predictable quantities of water despite variation in the water pressure experienced by the valve.
=== SLA === The spout piece makes a suction area when it prints the threads that connect to the siphon piece, so it should be printed at an angle, 45 works.
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