Some of my favorite builds, hacks and projects from the past year

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Build a party decoration that encourages partygoers to dance!

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Deck the beards this year with addressable LEDs

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Importing custom artwork into a PCB CAD program is a fun way to personalize your board.

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Meet Feldi!

Get to know SparkFun's newest Creative Technologist.

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How to set up an Arduino as an in-system programmer (ISP) and program an Atmel ATtiny84A to blink

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The case for formalizing free exploration opportunities

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There are two basic ways to connect electronic components with two terminals: series and parallel. In this episode, we examine those two types of circuits and show how to calculate equivalent resistance.

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Power is the rate of doing work, and for electricity, that means the rate in which energy is converted in a circuit.

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Let's look at the resistor and how it affects current and voltage in a circuit. Here's a hint: if you know two of either voltage, current or resistance, you can solve for the third.

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In this episode, we'll explore how electric current flows through a circuit.

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Over the next few weeks, we'll explore the basics behind electricity in a series of videos.

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Let's dissect another section of EdiBot 2.0 and learn how to spin DC motors with Python.

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The newest version of EdiBot relies on contour finding in OpenCV to locate and chase yellow objects.

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How to make faux neon signs with EL wire and rigid aquarium tubing

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Adding a chronograph to a Hot Wheels track to measure the speed of passing toy cars.

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What's inside the crowd participation wristbands you find at major events?

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Quick update: Was in the aforementioned AZ Walmart on Wednesday, and decided to "splurge" and buy 6 more crayon boxes. Was pleasantly…

Well I went ahead and purchased one of these, the box arrived but now I am having issues even getting the unit to run. Can anyone provide…

Walmart is selling plastic "crayon boxes" for $1 a pop (at least in the stores I've checked in AZ and CT). They are a great size for small…

Yeah, not as exciting. But I included some pictures of the boards highlighted? Ha ha.

Ah drivers... Not nearly as exciting as your normal dance costume posts, but probably significantly more important... if only we could get…

This sounds like the Klutz "Lego Crazy Action Contraptions" book+kit, which has been updated slightly over the years, but still…

Just a heads up, the video mentions dual 3A ports on the battery pack. However, only one of the ports outputs 3A.

I like where you are headed with that... you could also add an eccentric rotating mass (ERM) (aka vibrating) motor to get it to wobble.

Here is the GitHub repository for this project (also linked above). I believe the files are in the…

I know there are specific restrictions on international orders (however, the rules get changed every few months). As a rule of thumb, if…

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