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Iowa Aquaponics: Plant Nutrition: Essential Elements for Plant Growth

http://iowa-aquaponics.blogspot.com/2012/08/plant-nutrition-essential-elements-for.html

Plant Nutrition: Essential Elements for Plant Growth. Plant nutrition is a diverse topic ranging from an understanding of the parts of a plant, essential elements plants need, the methods by which nutrients are absorbed and physiological symptoms of nutritional disorders. This article, part of a series on each of these topics, focuses on the essential elements of plant nutrition. The element must be required for the completion of the life cycle of the plant. The essential mineral elements comprise the re...

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Iowa Aquaponics: Real-Time Clock - Part I

http://iowa-aquaponics.blogspot.com/2013/07/real-time-clock-part-i.html

Real-Time Clock - Part I. A fundamental necessity of any controls system is the ability to track time. As far as we are aware, the Arduino has three methods it can employ:. Serial. Repeatedly get the time over the Serial connection. External Hardware. Real-time clocks, like the ChronoDot from Macetech, establish a base time when the Arduino sketch is compiled. When you request the current time in the sketch you actually receive a time based on the time that has elapsed since compilation. The ChronoDot in...

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Iowa Aquaponics: Aquaponics: Arduino Email & Text Messaging

http://iowa-aquaponics.blogspot.com/2013/03/aquaponics-arduino-email-text-messaging.html

Aquaponics: Arduino Email and Text Messaging. Automation can immediately act to correct some of these conditions but sometimes you don't have a backup pump, grow light or stock tank heater. Leaks, especially in basement systems, can ruin property if it's not addressed quickly. What you want is a way to know. What's going on as it happens. The Arduino Data Acquisition and Control System (ADACS) projects in Automating Aquaponics with Arduino. 1 x Arduino Uno R3. 1 x Arduino Ethernet Shield R3. The first st...

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Iowa Aquaponics: Aquaponics Controllers Have Shipped

http://iowa-aquaponics.blogspot.com/2013/09/aquaponics-controllers-have-shipped.html

Aquaponics Controllers Have Shipped. The first batch of Aquaponics Controllers have shipped! These units are single-point, full-system controllers that are used for Aquaponics Tracker. Triple-mode pump control: always on, toggle, manual. Optionally use external (and therefore replaceable) relay kits. Industrial grade pH probe. Industrial grade dissolved oxygen probe. Uses an Arduino Mega R3 and Arduino Ethernet Shield R3. For use with Aquaponics Tracker or a stand-alone application. Figure 5. Full kit.

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Iowa Aquaponics: February 2015

http://iowa-aquaponics.blogspot.com/2015_02_01_archive.html

New DS18B20 Breakout Board. The DS18B20 waterproof temperature sensor now comes with a breakout board, making connections to your Arduino aquaponics controller much easier. The breakout board features two mounting holes, a 5.0 mm pitch 3-pin screw terminal and on-board power LED. The Arduino. Tutorial has also been updated with the new wiring diagram. First Look: New Arduino pH Circuits. To use these new breakout boards. Here's a pic snapped while in testing. Arduino Aquaponics: Pump Control. To prevent ...

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Iowa Aquaponics: Aquaponics: Real-Time Graphing Online

http://iowa-aquaponics.blogspot.com/2013/03/aquaponics-real-time-graphing-online.html

Aquaponics: Real-Time Graphing Online. While this project was designed with aquaponics in mind, it does not require an aquaponics system, making it useful in any application that wants graph data online in real-time. The included application, therefore, is bare-bones to make it easier to integrate into your own project. You can find a background tutorial on the light-dependent-resistor here. 1 Arduino IDE: Arduino-1.0.3. 2 App Engine SDK: Python, Linux, 1.7.4. 3 Python: Python2.7. 4 Ubuntu 12.04. Inside ...

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Iowa Aquaponics: The Vertical Farm

http://iowa-aquaponics.blogspot.com/2012/07/vertical-farm.html

The first time I came across the Vertical Farm. Concept, it was in an issue of Popular Science. A large pullout showed an awe-inspiring skyscraper with a white-bearded man posing in front, cupping an ear of corn and staring off in the distance. The Future of Farming. Upon hearing of aquaponics I was immediately reminded of that pullout and dug out my old PopSci issue. A few days later I checked out, "The Vertical Farm," by Dr. Dickson Despommier, from my local library. Farming the Urban Skyline". 1 Year-...

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Iowa Aquaponics: First Look: New Arduino pH Circuits

http://iowa-aquaponics.blogspot.com/2015/02/first-look-new-aquaponics-ph-circuits.html

First Look: New Arduino pH Circuits. Fresh out of the box, here's a quick look at the new pH circuits. These are going straight into assembly and re-flow and then we'll update the pH tutorial. To use these new breakout boards. Here's a pic snapped while in testing. Subscribe to: Post Comments (Atom). Arduino Aquaponics: EnvDAQ with Water Temperature Sensor. Introduction The Environment DAQ  is an open source Arduino shield used to track air temperature, relative humidity and light in aquapon. A fundament...

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Iowa Aquaponics: March 2015

http://iowa-aquaponics.blogspot.com/2015_03_01_archive.html

Arduino Aquaponics: Rotary Encoders. Rotary encoders are interesting little devices. At Iowa Aquaponics, we typically pair them with LCDs. And create menus for controllers. Rotary encoders can be thought of as a potentiometer and push button in one, but the rotary encoder does not have a limit to its rotation like a potentiometer does. In other words, it can be rotated more than 360 degrees which allows you to create complex menus you can navigate with a single rotary encoder. 16 x 2 Character LCD. A new...