7/18
Sewn nylon, lasercut valves, blower, ESP8266.
Sponsored (with many thanks) by EMFCamp 2018.
Construction and assistance by Robert & Izzy & Nick, without whom it would not have happened
Deserves a proper writeup, but in the meantime here's
Code and CAD.
Layout and BOM spreadsheet.
Here it is at Puppet Place, under manual control