Tag: DIY

Connecting a low cost TDR moisture content/EC/temp sensor to a NodeMCUv3

I have discussed moisture content sensors extensively in the past. I have written posts about the use of capacitive moisture sensors to measure volumetric moisture content, including how to create…

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Arduino hydroponics, how to build a sensor station with an online dashboard

In a previous post about Arduino hydroponics, I talked about some of the simplest projects you could build with Arduinos. We also talked about how you could steadily advance towards…

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How to make an organic hydroponic nutrient solution

Hydroponic nutrients are usually made with synthetic chemicals that come from industrial processes. While these chemicals are usually of a higher purity than those mined or obtained from animal or…

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Creating a pH/EC wireless sensing station for MyCodo using an Arduino MKR Wifi 1010

There are multiple open-source projects available online for the creation of pH/EC sensing stations for hydroponics. However, all of the ones I have found use a single Arduino or Raspberry…

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How to make your own stabilized mono-silicic acid for use in hydroponics

Please follow this link, for an updated an easier process for the synthesis of mono/ortho-silicic acid. During the past several years, there have been a lot of “mono-silicic acid” products…

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Calibrating a capacitive moisture/water content sensor for hydroponics

As I’ve mentioned multiple times in my blog, moisture sensing is one of the most important measurements in a hydroponic crop that uses a significant amount of media. It allows…

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MyCodo: an open-source solution for control, data logging and visualization

There are sadly not a lot of open source solutions for data logging, visualization, and control that have all the features required to be decently expandable and allow for different…

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Pros and cons of building your own sensor and data logging system in hydroponics

If you’ve read my blog before, you know how important data logging is to having a successful hydroponic crop. Data allows you to monitor and tune the different variables in…

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Five common mistakes people make when formulating hydroponic nutrients

It is not very difficult to create a basic DIY hydroponic formulation; the raw salts are available at a very low cost, and the target concentrations for the different nutrients…

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Preparing your own low cost A+B generic hydroponic nutrients at a small scale from raw salts

In a recent post about the cost of custom hydroponic nutrients, I talked about the cost of preparing nutrients equivalent to those of a commonly used brand (general hydroponics Flora…

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