This is a soil moisture sensor kit with one sensor interface module that can be connected to up to three soil moisture and temperature sensors based on ATTINY441-SSU chip. The sensor is based on capacitive measurement and it’s coated sensor element makes it more reliable and longer lasting than sensors based on resistive measurement methods.

The calibration values are stored on the sensor element itself, so once a sensor is calibrated, it can be attached to any WisBlock Core module without the need to start a new calibration.

In addition the measured data Is transferred over I2C but, making the system more robust compared to sensors that transmit an analog signal.

It can be used to build a soil moisture measurement system for

• Garden
• Agriculture
• Schools (education)

Features : 

• RAK12023：
• Connect up to three RAK12035 to WisBlock
• Size: 10mm x 10mm
• RAK12035：
• Based on ATTINY441-SSU chip
• Soil moisture measurement
• Data transfer over I2C
• I2C address is can be changed with software commands
• Size: 18mm x 149mm

Documents : 

RAK12023

• RAK12023 Quick Start Guide
• Datasheet
• WisBlock Quick Start Guide
• WisBlock Source Code Repository
• WisBlock IO Tutorial

RAK12035

• RAK12035 Quick Start Guide
• Datasheet
• WisBlock Quick Start Guide
• WisBlock Source Code Repository(opens new window)

Package Includes : 

• 1 x RAK12023+RAK12035 Soil Moisture Sensor Atmel ATTINY441