Previously, I told you the story of "the continuous duty time of Raspberry-PI might be excellent."

However, the other day, the "monitoring system by Raspberry PI" has been broken down, and I could not access the system from a remote place.

"I am sorry, but the legend of Raspberry's force ends"

After all, when I told my wife returning to her country home, I knew all outlets of the system including Raspberry and Ethernet HUB have been pull out.

This is really "lost all powers" under "unexpected circumstances".

Well, if watching blinking LED of plastic case (Raspberry PI) and metal box (Ethernet HUB), the thought of

"They(Ebata's family) might forget plugging out"

is natural enormously.

The "plunging out" is good for power save, and prevention of fire accidents due to high heat of machine

"This action is "absolutely right""

Constructing this monitoring system was that I made a temporary construction carefully at Machida (Tokyo) and created a complete work manual, and gave it to my daughter, and finally I asked her to assemble the system.

After that, I kept remote management from Machida (remote management), however, Ii is my fault that I did not instruct her to leave a warning message saying "Do not pull out the outlet".

-----

If the machine's LED lights are flashing,

"We will not put up with such things."

It is self-evident knowledge for us, as system engineers.

However for human beings other than us, it is not self-evident knowledge.

Now I am biting the meaning of the following words powerfully,

"Tacit knowledge"