This is the control panel for an Expanse "O2 Backpack". Decals and other bits to follow, as well as the side handles, and upper hose plate.
The v8 design is made for a "TFT FeatherWing - 2.4" 320x240 Touchscreen For All Feathers" display from Adafruit:
The code for the Arduino is at:
The display bars count down over time, and turn from Cyan, to Yellow, to Red as your "Air" exponetially decays :)
R4 (and later) scales it up to the correct size.
The adapter glues between the backpack and the control panel. Current design you trace the adapter profile, and cut the backpack so that it sticks through.
Added .svg Stickers for your vinyl cutter.
Added upper hose plate.