SparkFun is joining Arm and Silicon Labs for a Tech Talk next week on all things Matter. Learn how to register, what IoT topics you'll learn about, and how to enter our Thing Plus Matter giveaway!
Importing custom artwork into a PCB CAD program is a fun way to personalize your board.
How to set up an Arduino as an in-system programmer (ISP) and program an Atmel ATtiny84A to blink
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.
Power is the rate of doing work, and for electricity, that means the rate in which energy is converted in a circuit.
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.
Over the next few weeks, we'll explore the basics behind electricity in a series of videos.
Let's dissect another section of EdiBot 2.0 and learn how to spin DC motors with Python.
The newest version of EdiBot relies on contour finding in OpenCV to locate and chase yellow objects.
Adding a chronograph to a Hot Wheels track to measure the speed of passing toy cars.
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The story goes that George Antheil was madly in love with Hedy Lamarr and this was an attempt to gain her interest. There are no documents…
I know a guy who is a big "fan" of IoT, even though he's not all that technical. His "day job" is as a business attorney, so he can afford a…
That's true, the blue LEDs would ideally have a resistor closer to 4x than 2x when jumping from 3.3V to 5V. I don't remember my original…
Thanks for your reply! Your "roughly double" resistances for 5V vs 3.3V imply that the difference between LED drop and 3,3V is same as 3,3V…
Your right, that would be a great way to fine tune the current for LEDs! You're also correct that the goal of this project was finding the…
Hi there! For the sake of brevity, I didn't go into full detail about how exactly I calculated the 5V resistor values. But in short, I took…
Responding to your note about the highly non-linear relationship between the pot position and the current -- a way to address this would be…
Nice initiative Dryw! But there's something a bit off in the "5V resistor value" calculations, supposedly using Ohm's law. The forward…
Minor issue: "Today's Deals" is still showing SparkFun Level Shifting microSD Breakout and…
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