What I Want to Do
Building on a conversation that @NShapiro, @Warren, and @DanBeavers and I have been having in Nick's note on his DIY Formaldehyde testing kit and our desire to lower the barriers to testing by mailing around air pumps in our lending library.
My goals are three-fold: make the kit robust and easily shippable, prevent user error with automatic shutoff, and (potentially) remove the most expensive component, the flow control valve.
- an arcade-style big red button
- a timed relay
- a hard case (Seahorse SE300)
- a laser-cut 1/4" thick case panel file (the red lines are cut lines, blue are markings)
- there is a place for a 3" x 5" info card but no card. *there should be a thermometer and hygrometer in the lower right
- there is no flow-restrictor on the intake valve, as I discussed in @nshapiro's note's comments
- Ionically, the material I had around to laser cut was MDF, a material well-known to off-gas formaldehyde. I'll find something else soon.