Fertilizer Monitor System

DIY Liquid Fertilizer Monitor Pricing:

This is a do-it-youself project. You will have somewhere around $700 to $1000 invested for a 12 row system with you assembling the wiring and mounting the flow meters. See more detail below the pictures.

You will need an Android Tablet (7"-8" model Samsung is my favorite), a tablet holder, charging cables, a method of charging the tablet such as a USB adapter from a cigarette type port, the app, a wiring harness or extension wires, a control box, flow meters (1 per row), wiring for the control box (+12V and ground), some method of holding the flow meters, a manifold to supply fertilizer to each row (one could come off the back of existing sight tubes).

For up to 12 gal/acre/row rate, the 1/4" flow sensors are sufficient (1/4" tubing). For higher rates you may need to purchase 3/8" tubing and sensors.

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The fertilizer app running on Android

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control box options

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12 row circuit

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Meter support

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Stacked blocks

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Meter blocks bolted on frame behind sight tubes.

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16 row AMP connector harness

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Tablet holder

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Tablet holder bracket

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DIY Manifold

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DIY motor controller

 

The manifold is a 3" PVC schedule 40 water pipe. I drilled holes and tapped them to mount threaded John Guest™ quick connect adapters. I run electric pumps for my infurrow and 2X2 systems and built my own motor controller with LCD screen showing % of full power. I don't look at pressure. I adjust the motor power by watching the monitor.

Prices are subject to change as parts prices fluctuate.

Purchase as needed:
Samsung Tab A6 type tablet - $100 to $150
1-12 row control box with JST connectors: $300 (2 on hand as of 1/20/21)
1-16 row control box with JST connectors: $300
1-16 row control box with 37 pin round AMP connector: $400
App that runs on the Android - Somewhere between free & $300 if it works okay for you.
Flow meters from Amazon - Digiten 1/4 Quick Connect 0.3-10L/min Water Hall Effect Flow Sensor Meter - $10 each
DIGITEN 3/8 Inch Quick Connect Water Flow Sensor Switch Flowmeter Counter 0.3-10L/min - $8 each
Optional plastic flowmeter holder blocks for 1/4 quick connect meters - $7.50 / row
Gerber file for flowmeter holder - free
Wiring for JST connector control box, you will need 1 extension cable per row:
      Solder your own parts kit: $3/row
      I solder the parts: $10/row
Wiring for AMP connector control box:
     AMP Connector, pins, pin romoval tool, solder your own kit: $60 + $3/row
     AMP Connector, pins, I solder your harness: $60 + $15/row
USB Adapter - $5.00 or buy locally for cheaper
Tablet holder & mount - $20 or make your own. Gerber file - free.

To purchase parts or a system, email me at Jim (at sign) outfarming.com. I will need to determine what harness connections are necessary.