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USB Sensor to Computer Interface

EnviTronics Lab - Agricultural Technology - Rockwool Mositure Sensor

Features

  • Compatible with DurUntash sensors

  • Dedicated software (SHUSHAN CVI)

  • Simple communication protocol for third party interfaces

  • Stores configuration data

  • Onboard sensor calibration and temperature-compensation

  • Can be easily interfaced with Arduino and Raspberry Pi boards

  • Powered by computer USB port

  • Unique digital device ID

  • Great for IoT applications; monitor sensor data on a webpage using Node-RED

  • Open-source DIY version available

  • Firmware can be updated; add more features as becoming available

AVAN Zero

AVAN Zero is a USB to analog and digital adapter for DurUntash Lab sensors. It provides an affordable and easy way to evaluate, power, and configure DurUntash sensors. The AVAN Zero can be used to log, and visualize sensor data, when combined with our SHUSHAN CVI Software. The AVAN Zero adapter is compatible with different Arduino and Raspberry Pi boards and can be directly plugged into computer USB port. In combination with Node-RED, you can use the AVAN Zero to monitor sensor data on a webpage. 

USB soil sensor adapter
USB soil sensor adapter
AVAN Zero and Node-RED

Plug and Play with DurUntash Sensors

The AVAN Zero is compatible all DurUntash sensors. Just plug your sensor into the adapter and get real-time sensor readings! The AVAN Zero automatically detects DurUntash Lab sensor connected to its port and can be operated out of the box with its default settings. The AVAN Zero has an updatable firmware meaning that future sensor models will also be supported with a simple firmware update using the SHUSHAN CVI-Wireless application for Windows.

APAS T1 soil moisture and temperature sensor
HITA E0 EC, TDS and Temperature sensor
INSHU LWS leaf wetness sensor

Simple Communication Protocol

Similar to our AVAN CT reader and interface, the user can communicate with the AVAN Zero using simple command lines. Popular single-board computers and microcontroller boards such as the Raspberry Pi, Beaglebone Black and Arduino among others, can easily obtain measurements from the AVAN Zero via its USB communication port. 

USB soil sensor adapter

Dedicated Monitoring and Configuration Software

To give the user the best experience, we have developed a graphical user interface called SHUSHAN CVI to work with the AVAN Zero. Here are some of the features of the SHUSHAN CVI:

Logging and Monitoring of Moisture, EC & Temperature

The SHUSHAN CVI works together with our AVAN Zero computer interface and DurUntash sensors to log and visualize moisture and temperature measurements in real-time. Recorded data are available in text format and can be easily exported to a spreadsheet like Excel.

Configuration Utility

The SHUSHAN CVI can be used to  upload new settings and calibration coefficients into the AVAN Zero adapter, and DurUntash sensors.

Data Filtering

The software allows for programming logging intervals for computer-based data logging. The averaging allows the user to conduct experiments in the noisiest of environments and still collect high quality data.

Software Calibration and Temperature Compensation

By default, the AVAN Zero automatically applies calibration coefficients to moisture readings to compensate for temperature change. As an option, the SHUSHAN CVI can be used to apply extra layers of calibration and compensation to measurements in real-time. 

EnviTronics Lab - Agricultural Technology - Rockwool Mositure Sensor
USB soil sensor adapter

Open-Source DIY Version Available

An open-source DIY version of the AVAN Zero is shared in a blog post. Please read the post to learn how to build one for your own project and use with DurUntash sensors.

Connecting soil moisture sensor to Arduino and Raspberry Pi

Monitor Data on a Webpage

The AVAN Zero interface automatically detects sensor type, takes sensor readings, carries out signal conditioning (e.g. calibration and temperature-compensation), formats the results in the form of comma-separated data string, and makes them available at its USB port every 5 s. This means the only thing you need to do is to connect each sensor to an AVAN Zero unit, and connect the AVAN Zero to your computer or Raspberry Pi board (via its USB cable). The rest is done in Node-RED. We have a complete guide on how you can use the AVAN Zero and DurUntash sensors to do "Real-Time Monitoring of Data from Multiple Sensors on a Webpage using Node-RED".

AVAN Zero and Node-RED
AVAN Zero and Node-RED
Image by Zoe Schaeffer

Applications

Moisture and temperature are recognized as important variables that influence plant productivity in both agricultural and natural ecosystems. Continuous monitoring of soil/substrate moisture is very important in different areas of science and engineering such as hydrology, soil science, geotechnical, ecology, meteorology, agronomy and controlled environment agriculture. Accurate soil moisture measurements are necessary tools in precision irrigation and water management. Substrate temperature is also a useful parameter in monitoring crop growth and can also be used for correcting moisture measurements. Soil moisture measurements can be used by farmers and researchers to determine water deficit and to specify the amount of water needed by plants.

California Proposition 65 Warning

This product may contain chemicals, which are known to the State of California to cause cancer, birth defects or other reproductive harm. Please go to the proposition 65 warnings website for more information.

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