Android/Arduino fertilizer monitor

Homemade Liquid Fertilizer Monitor

After seeing a in-furrow and 2X2 fertilizer monitor system at the Farm Progress Show ($10,000+), I built this DIY system with an Android tablet, an Arduino based control box, and Amazon $10 flowmeters for around $800.

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GPA Graph on Tablet

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Gang of meters

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3D printed meter blocks

I've simplified the fertilizer monitor app to just a graph of gallons per acre by row. I use two monitors on my planter, one for infurrow and the other for my 2X2X2. The flowmeters hook inline with the fertilizer tube going to each row. 1/4" and 3/8" meters are available. The electronics send the flow/acre to the Android app.

See the Order page for parts used.