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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Recent Blog Comments

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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