[jareklupinski]

if you turn it into an app, you wouldn't need to worry about manufacturing :)

would be a great way to use those old smartphones everyone has in their drawers... less e-waste!

(i'm making an app that turns your old phone into a mini entertainment center ;) )

[jmorrice]

I want the clock on my shelf to be beautiful retro clock hardware. That's my vision. Not an old phone.

There are technical reasons not to do this too. I'd like to add in a thermometer so it can have an indoor temperature display.

I have a cheap non-smart clock on my desk here that has an indoor and outdoor sensor, and it would suck if the much fancier clock I am making can't have that feature. I'm sure you can think of other sensors that would be interesting to have on such a unit.

[spdustin]

For sure, a hygrometer to go with the thermometer! Humidity is great to know if you’re at a mold risk (too high) or wood flooring damage risk (too low).

A barometric sensor would be neat (with a corresponding indicator for rising/falling), but probably less useful for most people.

The other popular air quality sensors (CO2, CO, VOC, PM2.5, etc.) are a little harder to QC, but the airgradient.com folks seem to have sourcing sussed out for at least some of those.