add a "cooldown time"
authorgregor herrmann <gregor@toastfreeware.priv.at>
Sun, 1 Nov 2020 01:51:58 +0000 (02:51 +0100)
committergregor herrmann <gregor@toastfreeware.priv.at>
Sun, 1 Nov 2020 01:51:58 +0000 (02:51 +0100)
commit66f287bf4f7cae9ad45b2ceba74f3f28d6104f80
tree2d45f8c7c1c81402f79b26f71850c44272bf4a1f
parent77ddbde90ffdf3a4a6265094f0d2c33844cd3724
add a "cooldown time"

don't warn more often than once per time period (currently one minute),
to avoid constant beeping when the co₂ value flaps around the threshold.
airingbutler.ino