- Sigrow Sensors Gen 3.0
- How to charge your sensor?
- Charging Instructions
- Sensor Gen 3.0 - RR03 Board
- Sensor Gen 2.0 - RR02 Board
- Charging Soil Mini
Sigrow Sensors Gen 3.0
The latest generation of sensors is equipped with an external solar panel, allowing for autonomous power supply and quick deployment without the need for external wiring.
For optimal performance, the solar panel should be installed facing South (in the Northern Hemisphere) to maximise sunlight exposure. This ensures efficient energy generation and reliable sensor operation.
Each sensor also includes an integrated rechargeable battery that serves as a backup power source. This battery can be recharged when needed and supports continuous operation during periods of low sunlight, such as extended cloudy conditions, long storage periods, or increased energy use (e.g., frequent fan activation in high temperatures).
This combination of solar power and battery storage enables continuous, low-maintenance operation.
Please note that if you are using a Gen 1.0 sensor, it operates on AA batteries. For more information, refer to the following article: How to replace Sensor batteries
How to charge your sensor?
Below you will find information on how to charge different types of sensors, based on the PCB configuration and sensor model.
Charging Instructions
- Before opening the sensor, ensure your hands are clean and dry to avoid introducing moisture or contaminants.
- Gently remove the top case (with the ID label) by pulling and wiggling it loose.
- Connect the charging cable via the designated charging port. (See versions below for examples)
- Allow the device to charge for several hours to reach full capacity.
- Battery status can be monitored in the app by enabling the battery parameter in the node map.
Safety: Lithium-ion 18650 and 14500 batteries must be handled properly. If you notice any damage to the outer wrap or insulation, discontinue use immediately.
Please inform us so the battery can be replaced.
Sensor Gen 3.0 - RR03 Board
Sensors with the latest board feature a USB-C connection, allowing compatibility with any standard USB-C cable. The charging port is located on the top PCB board. Please follow the Charging Instructions for optimal performance.
Sensor Gen 2.0 - RR02 Board
Sensors with the RR02 board are equipped with a micro-USB connection, enabling compatibility with standard micro-USB cables. The charging port is located on the top PCB board. This sensor includes a larger battery, so charging may take slightly longer to reach full capacity. Please follow the Charging Instructions for optimal performance.
Charging Soil Mini
Charging the Soil Mini is performed exclusively via wireless charging. A standard Qi wireless charger (Version 1.0 or 2.0) is required.
The sensor is actively charging when a red LED light is visible at the top. If you are using Version 1.0 and do not observe the red light, try repositioning or flipping the sensor to ensure proper alignment.
With Version 2.0, the Soil Mini is designed for single-orientation placement, ensuring correct alignment and optimal charging efficiency.
Once fully charged, a blue LED light will indicate that the charging cycle is complete.