A trio of Grow soil moisture sensors, for use with Grow HAT Mini or other devices.
These capacitive moisture sensors work using Pulse-Frequency Modulation (there's more info on that in our Grow tutorial). They're a lot less vulnerable to corrosion over time than old school resistive sensors, as there are no exposed electrodes. There's a handy indicator line to show you how far they can be pushed into the soil, and they even have a little area so you can label them with plant names (we think 'Pete' is a great plant name).
It's possible to use Grow moisture sensors on their own with non-Raspberry Pi devices (like Arduino), as long as they're capable of monitoring pulses on an IO pin in the range of ~2Hz up to ~30Hz accurately.
Moisture sensor specifications:
Grow Moisture Sensors (pack of 3)
Extend your setup!
Useful cables for plugging your Grow sensors into things
3-pin JST-SH cables for Grow moisture sensors (pack of 3) – 1m+ £2.50
3-pin JST-SH cables for Grow moisture sensors (pack of 3) – 35cm+ £1.50
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