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Overview

The Smart Moisture Sensor reference design uses the RL78/G11 MCU's moisture sensor to measure the conditions of soil and transfer the data to a smartphone app via an RL78/G1D Bluetooth Low Energy (LE) module which can be graphically shown. For example, the app can provide a moisture vs. temperature graph. Additionally, the Smart Moisture Sensor can control a water valve by outputting a motor signal. The system also includes a buzzer to warn users if the soil becomes too dry.

Smart Moisture Sensor
Smart Moisture Sensor Solution
Smart Moisture Sensor
Smart Moisture Sensor Solution
  • Includes an oscillator that facilitates the low-power capabilities of the Bluetooth module
  • A blue LED indicates Bluetooth LE operation
  • Smartphone app available to communicate with the Smart Moisture Sensor via its built-in Bluetooth module
  • UART and I2C connections allow alternative communication methods with the RL78/G11 MCU
  • Debugger connections to program the device
  • Power to the device is controlled by the RL78/G11
  • 6-pin header allows for different types of motors to be controlled
  • Moisture sensor consists of two contacts (one on each side of the prong) that measure the resistance of the surrounding soil
  • Specify and configure automatic watering mode
  • SMS hardware is powered by a single AA battery

Documentation

= Featured Documentation
Type Title Date
Manual - Hardware
RL78/G11 Smart Moisture Sensor User's Manual
PDF 2.13 MB
1 item

Design & Development

Software Downloads

= Featured
Type Title Date
PCB Design Files
RL78/G11 Smart Moisture Sensor Design Files
Log in to Download ZIP 722 KB
1 item