You can find a cheap Chinese soil moisture sensor labeled YL-100. But it’s hard to find working instructions on how to use it. This article intends to fill this gap.
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Linux with old 32-bit hardware
Sometimes it may be necessary to use old computers. Linux operating systems are perfect for this task. There are a lot of articles and recommendations on the Internet for selecting software and specific distributions for this task. But there is a key problem: recently all browsers (and some other programs) have ceased to support old processors (most 32-bit).