Soil nitrogen sensor

Capacitive soil humidity sensor with I2C interface powered by 3-5V. Adafruit 4026

Capacitive soil moisture sensor with pump for M5Stack sets, equipped with holes compatible with LEGO. M5Stack U101

Crowtail-Moisture Sensor 2.0 is an analog soil-moisture sensor with extended electrodes, ideal for automatic watering systems and gardening projects. It enables precise reading of moisture levels in deeper layers of the soil.

Kit for controlling soil moisture of cultivated plants. It contains the HAT Mini module and soil moisture sensors. Pimoroni PIM510

Capacitive soil moisture sensor with analog output (Grove connector). The probe has a pointed tip, which allows it to be easily inserted into the ground. Cytron MAKER-SOIL-MOISTURE

Soil moisture sensor with analog output. It has a probe with pointed tips, which allows you to easily place it in the ground. The analog output voltage level increases in proportion to the humidity level

Earth humidity sensor with analogue output, supplied with 3.3 to 5.5 V voltage with Gravity connector. DFRobot SEN0193

This soil moisture sensor uses a resistive measurement between two gold-plated probes. Corrosion resistance ensures long life and stable measurements. It works with the micro:bit and Arduino platforms, allowing for reading soil moisture levels as an analog signal. Adafruit 6362

Soil moisture sensor based on soil resistivity meansurement

A robust sensor for approximate measurement of nitrogen, phosphorus and potassium (NPK) levels in soil, ideal for precision farming and field applications. With a rugged design (IP68), RS485 MODBUS-RTU communication and a wide power supply range, it allows easy integration with Arduino-type systems and operation in harsh environmental conditions. DFRobot SEN0605

A simple and practical soil moisture sensor designed to work with the BBC micro:bit. Using conductive probes inserted into the ground, the module measures moisture levels and generates an analog signal read by the micro:bit. Powered by 3V, it ensures easy and reliable integration, and when combined with the Mi:Power board, it can also trigger an audible alarm when the soil is dry. Kitronik 5647

A moisture sensor specially adapted to work with the Kitronik Greenhouse Kit for the BBC micro:bit. It allows monitoring of moisture in the soil. It can be programmed using any editor for the micro:bit. Kitronik 56107

Resistive soil moisture sensor. The board is equipped with a Grove connector and communicates via an analog interface. Seeed Studio 101020008

Crowtail-Capacitive Moisture V2.0 is a durable soil-moisture sensor based on capacitive technology, ideal for monitoring plant hydration levels. Intended for use in projects with 3.3–5 V microcontrollers.

A set of three capacitive soil moisture sensors for a home automatic irrigation system. Pimoroni PIM520

Seeed Studio 101990982 is a professional RS485 soil sensor that enables simultaneous measurement of moisture, temperature, and electrical conductivity at four different depths. With its robust design and IP68 protection, it is suitable for long-term applications in agriculture, greenhouses, and environmental monitoring, providing reliable data for irrigation and crop optimization.