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)

Shop with confidence – we've been serving the hobbyist electronics, Maker, and retro gaming communities since 2012.

• Satisfaction or refund guarantee
• Worldwide shipping via mail or courier
• 55,000+ customer reviews
• Secure website and payments