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b-parasite - An Open Source BLE Soil Moisture Sensor

b-parasite is an ultra low power, open source Bluetooth Low Energy (BLE) soil moisture and ambient temperature/humidity sensor.

- Soil moisture sensor. I wrote about how capacitive soil moisture sensors works on this Twitter thread, based on this great post on
- Air temperature and humidity sensor using a Sensirion’s SHTC3
- Powered by a common CR2032 coin cell, with a battery life of possibly over a year - see “Battery Life” below
- Open hardware and open source design”

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