[kwlug-disc] plant moisture meter

[CrankyOldBugger]

This month's MagPi (the Raspberry Pi magazine), while being a good issue
overall, has an article on measuring house plant moisture.  I know that
there are some gardeners in the group, hopefully they'll find it useful.

Free PDF download at https://magpi.raspberrypi.com/issues/114

(or if you have a raspi with the latest OS you can view this via the
Bookshelf app)
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