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Raspberry Pi Pico. All-new RP2040 microprocessor. 30 GPIO pins! Code with MicroPython or C/C++. Click to learn more.
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Grow Moisture Sensors (pack of 3)

A trio of Grow soil moisture sensors, for use with Grow HAT Mini or other devices. Read more...

  • Description
  • Reviews

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:

  • Capacitive moisture sensors with Pulse-Frequency Modulation output.
  • Male JST SH 3P connectors (if you need compatible cables, we sell them separately here)
  • Pinout
  • Dimensions: 99mm x 10mm x 5mm (including connector)