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In this week's Enginursday, Joel shows off his aquatic turtle habitat, complete with an above-tank basking area, automated lighting, and an aquaponic feeding system.

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A look into our awesome solar array and what it's doing for SparkFun.

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Learn how data.sparkfun.com can help you not just collect data, but also use that data to make hypothesizes, see trends, and make adjustments to a variety of systems.

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Check out this video tutorial for building your own soil moisture sensor.

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Show us what you can make out of reused parts!

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How to create a simple and cheap time-lapse rig with the Raspberry Pi.

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Joel shows us how to build a handheld pH sensor to regulate his aquaponics system.

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Thanks for having this fun competition :). I wish I could say it was easy. My numbers are: 77 for 77, 81 for 81, 93 for 93, 79 for 79, 172…
Thank you for hosting this contest. I will not meet the deadline but I plan to continue to work on it and want to describe what I think is a…
One of my robots can use MaxSonar devices to navigate. The now deleted chain link fences give a great signal but hay bales do not. Other…
I won’t have the time to code up an entry, but in keeping with Nate’s desire to learn from each other, and to talk about approaches to…
Arduino code trial uploaded on Github: https://github.com/marciopp/SparkfunBag Code was not verified.
My contribution can be found here Results: * 3-77hits.TXT:…
I see more than one example of soldering with a DMM probe! I just did that search, and wow, there’s just too many of them! There’s an…
Matlab code on Github: https://github.com/marciopp/SparkfunBag As soon as I have time I will port to Arduino as the code is simple and…
Hi, I did not have time to port to Arduino, but the code is very simple. I am posting today, because is the last day… Approach is three…

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