A brief overview of the new Raspberry Pi-based data-logging web server from Atlas Scientific

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We use serial communication all the time. But why are we using multiples of 300?

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It's a known trick that we can use LEDs in reverse. We'll explore how to use them as photodetectors with Arduino and create a simple demo that responds to hand swipes.

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How to make your own seismometer to measure ground activity, such as earthquakes and volcanic eruptions.

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Check out the next chapter in the aquaponics automation saga. The project has moved beyond a small indoor system to automating an entire geodesic dome greenhouse full of many different systems.

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A brief overview of the numerous internet-enabled devices I've used to monitor my aquaponic systems.

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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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High-­school science teachers can radically reduce the cost of building up science labs while giving students opportunities to engage in genuine design processes by introducing them to open­-source hardware. A vast collection of free and pre­-designed low-­cost scientific tools are available, many of which can be printed on a open­-source 3­D printer, including the printer itself. Not only can students benefit from access to research grade equipment, there are ample opportunities for students to build on, improve, and customize scientific tools as part of their curriculum. In this way the number and value of the open­-source hardware designs can expand with student effort, enabling a powerful motivating factor for science education.

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Happy Thanksgiving everyone! Check out this quick little hack using a standard temperature probe from my oven thermometer, our PicoBoard, and a little creative coding in Scratch!

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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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Dr. Kristi Pikiewicz discusses introducing some of her therapy clients to soldering as a way to calm and focus themselves. Yet another reason to involve kids in DIY projects?

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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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Low was indeed intended to be high, I have fixed it. Thanks! The button thing is an interesting point. I’ve been drawing them that way for…
Also, “When the system wants to shut itself down, it can release the power control line. The SYSOFF line goes low, and everyone goes to…
To be honest, that one gets me too sometimes. OK, I think I got it a little clearer in the post now.
LOL yes a base, you got me there!
Your analysis is correct! I was a bit high-level with that sentence though, and left out words! I’ll go in and see if I want to reword the…
“ or the GIPO output can pull the line low to turn the system on.” I see an NPN open collector driver, shouldn’t the gate be driven high…
I love the spinning box aspect of this project! I’m new to this stuff, what are the metal connectors called that are hooked up to the Piezo…
Good call. I usually forget to do this (unless I’m working with uint8_t), since I’m so used to “int,” but specifically calling out the byte…
Programming for 8, 32, and 64 bit systems, I personally prefer to use names such as “uint8_t”, “int64_t”, etc. so that it’s clear if it’s…
October? Really? Did you forget about the weather in Colorado in October? It frequently snows, and/or rains a lot.

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