Plant Watering Alarm Soil Moisture Sensor
This is a plant watering alarm as simple as that. You put it into the soil near a plant and it emits a tiny chirp when the soil is dry, reminding you to water the plant. It uses capacitive humidity sensing as opposed to resistive humidity sensing, this means, it does not make an electric contact with the soil, avoiding electrode corrosion and soil electrolysis and resulting in better accuracy and longer battery life.
Special care has been taken not to make it yet another source of annoyance Plant Watering Alarm Soil Moisture Sensor will be silent when it is dark and will restrict itself from making too much noise.
The alarm level can be set for each plant individually. As water is consumed by the plant, it will detect the low moisture level and will start to emit rare short chirps. As more water evaporates, it will increase the alarm rate. Plant Watering Alarm Soil Moisture Sensor can detect if it is day or night by measuring the amount of ambient light and will not make noise when its dark.
- Soil moisture sensing
- Light sensing
- Temperature sensing
- Reset chip
- I2C address change
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