DIY Soil Ph Meter || Measure Soil Ph Value using Soil Ph Sensor & Arduino

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In this project, we will make our own DIY Soil Ph Meter using Soil Ph Sensor & Arduino for the measurement of Soil Ph. Soils can be naturally acidic or alkaline & can be measured by testing their pH value. Soil pH is a measure of the acidity or alkalinity of the soil.
Soil is considered a natural medium for plant growth & development. Much research is going on to determine the internal factors of farmers’ crop production failure. One of the factors is the balance of nature in unstable or unfertile soil that inhibits plant growth and plant root development. The Ph is the acidity or basicity of material measured on a scale between 0 to 14. The Ph value lesser than 7 is considered acidic and greater than 7 is considered basic. If the pH scale is 7 then the material is neutral. The most ideal soil conditions for the growth & development of plants are neutral soil. However, some types of plants are still tolerant of soils with slightly acidic Ph with a maximum pH of 5.
While browsing through the internet, I found a great Ph Sensor manufactured by some Chinese R&D Manufacturer. The sensor is manufacture by a company called HONDETEC and you can check it on Alibaba. The sensor works perfectly with Modbus RS485 and the result is highly impressive. So, in this video, we will learn about Soil Ph Sensor & Arduino Interfacing and design our own Arduino Soil Ph Meter. We will display the Soil Ph value on a 0.96″ OLED Display.
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