alt Hacker NewsI'm mostly interested in what goes wrong.
I've made enough of these projects to know that ~75% need modifications that were not anticipated. For instance, I made a freezer temp sensor to php email for cases where the freezer stops working... but when I opened the freezer, it would send an email. I needed to sample for 30 minutes or something.
Maybe this was simple and you will be part of the 25% that work perfect and need 0 updating.
Yes most things that monitor a sensor in the real world can't react to instantaneous readings. They need to use an average of samples over some time period. Also due to hysteresis, you have to allow time to see any changes in state in response to changes in inputs. Most real-world systems don't respond immediately.