Honshu and Okinawa

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I am back. I spent 10 days in Japan, 5 days for work on the main island of Honshu and 5 days of solo adventure in Okinawa. Travel is so invigorating dispite the uncomfortableness. Jetlag, anxiety, crowds, and other discomforts aside, it is mind-expanding and rewarding. Work went well. I flew a new airline (Skymark) from Tokyo to Naha. I am always wary of strange discount airlines and all the traps they set. However, I had a great expereince with "Sky". I was actually shocked. Super easy checkin at the airport, no extra fees even with extra luggage. The primary mission in Okinawa was to visit the Peace Park and the suicide cliffs of Okinawa. From what I understand, at the end of WW2 the inhabitants were encouraged to commit suicide rather than surrender to the Americans and get tortured and eaten. Besides other types of suicide, they jumped off the cliffs at the Southern end of the main island. If you have seen the original color footage taken at the time, I am sure you ...
Univesrsal Differential Controller

Here is neat solar controller I found. It is fairly inexpensive as well. It has three inputs with adjustable hysterisis and 1 input fora flow rate sensor.

When I started looking I was hoping there were standard components avaialable. It is better than it was but there is still not a wide range of products for a far-north system like we need.

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