Gas Cylinder On/Off IOT

thingiverse

My use case is to know if I left the valve open on my welding gas cylinder. I wanted something IOT to tie into Home Assistant. After some great suggestions, I based it off of this https://old.reddit.com/r/functionalprint/comments/rwp1zk/gas_cylinder_valve_indicator/ I started with a Zigbee window sensor. Then I used a microswitch from a broken mouse. I just solder the wires in parallel with the reed sensor. I used the idea from @svideo (linked above) of an outer and inner rotating, being captured from the bottom. So the switch was not as sensitive I had to make the slots longer. I have not tested it in the real world, but it does work on the bench. The only reason I can think of it failing in production is the Zigbee signal not making it from my shop. I currently have a routine that when I "close" the shop checks for various sensors and if one is not what I expect it will announce it over google home and flashlights. I plan on treating the gas cylinder just like a window, to make sure it is off before leaving. I am including the fusion 360 so if needed someone can fit their handle and/or microswitch.