python matplotlib mistake notes

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I am trying to use Python to draw a fig with some data. Get some weird error.   I am using pandas and matplotlib to deal with data. 1 )   But when I was trying to change the direction of the lable of x axis. It didn’t change. I searched online. Someone says, if use […]


New project released, Zero Multi-Power Supply (Li-ion supported) V2.2

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The new project of multi-power board is released a few days ago on Kickstarter.  The supporters are so amazing, they help to bring the project into alive within 2 days. Great Supporter! What is this? A powerful power supplier is so important for a DIYer, especially for the starter. After review the feedback and […]