The Analog Sensor Board allows the connection of 8 analog devices with voltages of 0..4V
** Attention: Your OpenSprinkler 3.x needs a firmware update so that it can recognize the board! (see below) **
**NOT for OSPi!! But take a look here: https://OpenSprinklerShop.de/2023/09/06/neue-ospi-software-mit-analog-sensor-api **
As an app for your smartphone, search for “OpenSprinklerASB” in the App/Play Store
NEW: Now as a package at a special price with 1x or 2x SMT50!
Features:
- 8 analog sensor inputs with the range 0..4V
- Outputs: 5V (Pin 6), 3.3V (Pin 7) and GND (Pin 8) for powering sensors
- Can also be combined with up to 4x Zone Expander
- Maximum ONE Analog Sensor Board per OpenSprinkler 3/3.2
- 16-bit digital analog-to-digital converter
- Compatible e.g. with the Truebner SMT50 or other analog sensors
- Versatile applications: cistern fill level, temperatures or current moisture values
- New software with additional features, e.g.
- Linear or digital irrigation adjustment based on soil moisture
- Grouping sensors with averaging
- Permanent logging of sensor data
- Integration of RS485 sensors via IP interface, e.g. for the Truebner SMT100 RS485 Modbus
- Integration of analog sensors connected to another OpenSprinkler
- Additional API and extended GUI of the OpenSprinkler APP
- Current value display on the APP home page, e.g. for cistern fill level, temperatures or current moisture values
- Integration of current weather data
- New: Monitoring and control
- Compatible with OpenSprinkler 3.2 AC/DC/Latch (not compatible with OSPi)
- Graphical display of logged sensor values:

- Support for the following sensors/types:
- Truebner SMT100 RS485 Modbus via IP2Modbus adapter (not included)
- Truebner SMT100 Analog Version 0-3V
- Truebner SMT50 soil moisture and soil temperature
- General measurement 0…4V
- General measurement 0…3.3V i.e. 0…100%, e.g. fill level
- Vegetronix VH400
- Vegetronix THERM200
- Vegetronix AquaPlumb
- (Analog) sensors from another OpenSprinkler, via network
- Current weather data for data collection: temperature, humidity, rain, wind
- Grouping: Multiple sensors can be combined, value formation from Min/Max/Avg/Sum
- Export of data as JSON or CSV (via API)
- All sensor data is pushed to a configured MQTT server.
Further information here: Measuring soil moisture and controlling irrigation
Example configuration with an SMT50:
See also here: https://OpenSprinklerShop.de/2023/01/29/analog-sensor-configura-activate
Summary: https://OpenSprinklerShop.de/asb










daviaud.camille –
Bonjour, would it theoretically be possible to use this on OSPi by soldering the connections to the GPIO port present on it? 🙂
Unverified purchase. More information
Admin –
Bonjour, unfortunately this is not possible, the “Analog Sensor Board” is designed for the I2C interface of the ESP8266. But we are already working on an alternative solution. There are already many alternative interfaces for the Raspberry PI. Only the software is missing.