Spil Moisture Sensor for Raspbery Pi

Hello ,

I saw several articles regarding Soil Moister Sensors but can not find any manual recomendation how to do it properlly,

I have several type of sensors already runnind with Raspbery Pi and Cayenne.

Can someone give recomendation instructions how to Add 2 Moister Sensors, witch brand to use etc…

which kind of soil moisture is it? can you share a link. If it is an analog sensor then you will need an ADC.