Let's see... USB sensors add unneeded complexity AND power requirements.
How would you stick an Android phone plus a whole octopus of usb peripherals inside a nice neat box? It would be at least shoe box size.
If you need a board that will run 24/7 and control some process, remember Android goes into power management to save battery, and you need to fight it to operate continously. Might not even be possible any more with newer Androids that restrict wake locks.
RPi reliability isn't as good as it could be, at least not without cooling, but I would trust it for long time operation any time over a $30 phone that had to include a screen and a battery in that price and thus has made a lot more compromises.
How would you stick an Android phone plus a whole octopus of usb peripherals inside a nice neat box? It would be at least shoe box size.
If you need a board that will run 24/7 and control some process, remember Android goes into power management to save battery, and you need to fight it to operate continously. Might not even be possible any more with newer Androids that restrict wake locks.
RPi reliability isn't as good as it could be, at least not without cooling, but I would trust it for long time operation any time over a $30 phone that had to include a screen and a battery in that price and thus has made a lot more compromises.