For years I have been using HS to send daily emails to myself and a few friends containing temperature and energy usage graphs. These graphs are generated each morning automatically via Excel spreadsheets. When I was using HS2, this process was straightforward because I ran everything on one computer. I am now using HS3 on a low power computer and it does not have the necessary resources to run large Excel spreadsheets.

One of the features I really like about Windows 10 is its sleep mode. It goes to sleep in a predictable way and will wake from sleep via WOL. Sleep mode is ultra low power usage and the wake up time is only seconds.

Although HS3 is designed to run 24/7 I have found that it also runs fine on my desktop computer that goes in and out of sleep mode. Of course HS3 cannot trigger any events while the computer is sleeping, but it completely recovers when the computer is awake.

So I have set up several HS3 events to run Excel spreadsheets every morning. The spreadsheets generate graphs and stores them on my LAN. These graphs are then available to be emailed via HS3 running on my low power computer. The desktop computer goes back to sleep after it runs the spreadsheets. I have been using this approach for many months now. I only restarted the desktop once. It is incredibly stable.

There is probably a way to to this via the Windows 10 task scheduler, but I spent a lot of time trying and I was not able to get task scheduler to run Excel. I think this is a security issue. Besides, task scheduler can't start the coffee pot. I send a JSON command from my desktop to my micro computer to turn on the coffee pot!

I think there are many potential uses for HS3 as a part time controller running on a separate computer. Perhaps things like Christmas lighting, summer sprinkler system control, etc would be more easily managed if they were controlled via a separate system.

Steve Q

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